Assignment 1 IntMkt Oct2015
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C++输入输出;程序范例电影票销售和慈善捐赠某地的一家电影院的售票情况很好。
为了帮助当地慈善事业,剧院的所有者巨鼎讲电影票的总销售额的一部分捐给慈善事业。
本例设计并编写一个程序,该程序提示用户输入电影名称、承认票价、儿童票价、销售的成人票数目、销售的儿童票数目和捐赠额占总销售额的比例。
算法及输出的程序如下:1.定义变量2.将输出的浮点数设置为两为小数固定小数点格式:不足两位小数的数字,尾部补零。
因此还需要添加头文件iomanip3.提示用户输入电影名称4.输入电影名称。
由于电影名称可能不止一个单词组成,也可能含有空格符,应该在程序中使用getline函数来读入字符串。
需要特别注意的是,由于getline函数同时读取换行符,所以在一行内输入电影名称后,需要按两次回车键。
5.提示用户输入成人票价6.读入成人票价7.提示用户输入儿童票价8.读入儿童票价9.提示用户输入成人票的销售数量10.读入成人票的销售数量11.提示用户输入儿童票的销售数量12.读入儿童票的销售数量13.提示用户输入捐赠额占总销售额的比例14.输入捐赠额占总销售额的比例15.计算总销售额16.计算捐赠额17.计算净销售额18.输出结果完整的程序代码清单#include <iostream>#include<iomanip>#include<string>using namespace std;int main(){ //step 1string movieName;double adultTicketPrice;double childTicketPrice;int noOfAdultTicketsSold;int noOfChildTicketsSold;double percentDonation;double grossAmount;double amountDonated;double netSaleAmount;cout<<fixed<<showpoint<<setprecision(2);cout<<"Enter movie name:"<<flush;getline(cin,movieName);cout<<endl;cout<<"enter the price of an adult ticket:"<<flush;cin>>adultTicketPrice;cout<<endl;cout<<"enter the price of a child ticket:"<<flush;cin>>childTicketPrice;cout<<endl;cout<<"enter the number an adult tickets sold:"<<flush;cin>>noOfAdultTicketsSold;cout<<endl;cout<<"enter the number child tickets sold:"<<flush;cin>>noOfChildTicketsSold;cout<<endl;cout<<"enter the percentDonation:"<<flush;cin>>percentDonation;cout<<endl;grossAmount=adultTicketPrice*noOfAdultTicketsSold+childTicketPrice*noOfChildTicketsSold;amountDonated=grossAmount*percentDonation/100;netSaleAmount=grossAmount- amountDonated;cout<<"-------------------------------------"<<"------------------------"<<endl;cout<<setfill('.')<<left<<setw(35)<<"Movie Name:"<<right<<" "<<movieName<<endl;cout<<left<<setw(35)<<"Number of ticket sold:"<<setfill('')<<right<<setw(10)<<noOfAdultTicketsSold+noOfChildTicketsSold<<endl;cout<<setfill('.')<<left<<setw(35)<<"Gross amout:"<<setw(8)<<grossAmount<<endl;cout<<setfill('.')<<left<<setw(35)<<"percentage of gross amount donated:"<<setfill('')<<right<<setw(9)<<percentDonation<<'$'<<endl;cout<<setfill('.')<<left<<setw(35)<<"Amount donated:"<<setfill('')<<right<<"$"<<setw(8)<<amoutDonated<<endl;cout<<setfill('.')<<left<<setw(35)<<"Net sale: "<<setfill('')<<right<<"$"<<setw(8)<< netSaleAmount<<endl;return 0;}。
50道C++编程练习题及解答-c编程例题在学习 C++编程的过程中,通过大量的练习题来巩固知识和提升技能是非常重要的。
下面为您带来 50 道具有代表性的 C++编程练习题及详细解答。
练习题 1:求两个数的和```cppinclude <iostream>using namespace std;int main(){int num1, num2, sum;cout <<"请输入第一个数: ";cin >> num1;cout <<"请输入第二个数: ";cin >> num2;sum = num1 + num2;cout <<"这两个数的和为: "<< sum << endl;return 0;}```解答:这段代码首先使用`iostream` 库中的`cout` 输出提示信息,让用户输入两个整数。
然后通过`cin` 接收用户输入的值,并将它们相加存储在`sum` 变量中。
最后使用`cout` 输出两数之和。
练习题 2:判断一个数是否为偶数```cppinclude <iostream>using namespace std;int main(){int num;cout <<"请输入一个整数: ";cin >> num;if (num % 2 == 0) {cout << num <<"是偶数" << endl;} else {cout << num <<"不是偶数" << endl;}return 0;}```解答:在这个练习中,通过取余运算`num % 2` 来判断一个数是否能被 2 整除。
如果余数为 0,则是偶数,否则不是偶数。
练习题 3:打印 1 到 10 的整数```cppinclude <iostream>using namespace std;int main(){for (int i = 1; i <= 10; i++){cout << i <<"";}cout << endl;return 0;}```解答:这里使用了`for` 循环,从 1 开始,每次递增 1,直到达到10 为止。
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从面向对象的思维解题:农场一头小母牛,每年生头小母牛,母牛五岁产母牛,二十年上多少牛?解析:农场一开始有一头小母牛,疑问这个小母牛第一年就能生小牛还是长到5岁的时候才能生小牛?假设小母牛第一年就可以生小母牛了,20年的时候有多少头牛。
(假如第1个小母牛长到五岁的时候,才可以生小母牛了,只需修改)有两个类,农场类和母牛类。
类的属性:农场类:只有一个存储所有母牛的List集合和牛的数量cowCount。
母牛类:只有一个年龄类。
类的方法:农场类:hasCowCount(year)方法,year年农场上有多少母牛。
母牛类:isGrowUp()方法,牛是否长到5岁,到了就算此牛成熟,可以生小牛。
birth()方法就是牛生小牛。
源码如下:1.Farm.java文件:import java.util.ArrayList;public class Farm {private ArrayList<Cow> cows = new ArrayList<Cow>();private int cowCount = 1;public int hasCowCount(int year){Cow c = new Cow();c.setAge(1);cows.add(c);for(int i=0; i<year; i++){for(int j=0; j<cows.size(); j++){Cow co = cows.get(j);Cow cow = co.birth();if(cow != null){cows.add(cow);cow.setAge(cow.getAge() + 1);}else{co.setAge(co.getAge() + 1);}}}cowCount = cows.size();return cowCount;}}2.Cow.java文件:public class Cow {private int age =0;public int getAge() {return age;}public void setAge(int age) { this.age = age;}public boolean isGrowUp(){if(age>=5)return true;elsereturn false;}public Cow birth(){if(isGrowUp())return new Cow();return null;}}3.测试类TestFarmCow.java文件:public class TestFarmCow {public static void main(String[] args) {Farm f = new Farm();int year = 20;int toatal = f.hasCowCount(year);System.out.println("第"+ year +"年农场上有"+ toatal +"牛!");}}。
常用国际贸易术语缩写(英汉)A = Acc.AA = automatic approvalA-1 = a number-oneA. A. R.= against all risksAbbr. = abbreviationAbs. = abstract statementa/c = accountA/C = account currentA.D. =Anno DominiAd. = advertisementa/d = after datead val. = ad valorem (=at value)adv. = adviceAFL-CIO = American Federation of Labor-Congress of Industrial Organization a. m. = ante meridiemans. = answer, answeredA/P =⑴additional premium⑵account paid⑶authority to purchaseA.R. = all risksArr. = arrival, arrivedAssmt. = assignmentAsst. =assistantAuct. = auctionA/V = averageA/W = actual weightB/= ①bag ②baleBal. = balance 承诺,承兑汇票自动承认制优等品质,一流的投保全险省略字,缩写字摘要说明书帐户,计算来往帐公元,西历广告发票后从价通知美国劳工联盟------上午,午前回答,已答追加保费已付帐采购授权书Bank'cy = bankruptcyB.B. = bill bookB.C. = before ChristB/D = bank draftB/E= bill of exchangeb.f. = Bona fideB/F = brought forwardB.K. = bankB/L = bill of ladingB/O = bought overBOFT/MOEA = Board of Foreign Trade,Ministry of Economic AffairsB/P = bill of paymentB. P. B. = bank post bill B. R. = bills receivable Brkge. = brokerageB/S = balance sheetB. V. = book valueB. W. = bonded warehouse 保全险到达,已到转让,配给助理拍卖海损,平均实际重量①袋②包余额破产支票簿公元前,西历纪元前银行汇票商业汇票,进港报表善意的转下页银行帐薄,篮子提单多买经济部国际贸易局---付款支票银行邮政汇票应收汇票经纪人,手续费借贷对照表,卖货凭单帐面价格保税仓库C/ = caseC/A = capital accountCapt. = captainCarr. = carriageCarr.fwd. = carriage forwardCat. = catalogueC. B. = cash bookCert. = ①certificate②certifiedcf. = conferC.F. = cost and freightC.F.C. = cost, freight and commissionc.f.i. = cost, freight and insuranceCH. = ①clearing house②custom housechq. = check, chequecif = c. i. L = CIF = cost, insurance and freight cif & c. = cost, insurance, freight and commissioncif & i. = cost, insurance, freight and interest Co. = companyC/N = ①credit note②circular note 箱资本帐户船长客车,输送,运费运费先付商品目录现款出纳薄①证明书②证明讫对照运费在内价运费及佣金在内价---运费及保险费在内价①票据交换所②海关支票③ consignment notec/o = ①carried over ② care ofC/O = ①cash order②certificate of originC. O.D. = cash on deliveryCom. = commissionCon. Inv. = consular invoiceConsgt. = consignmentCorp. = corporation C. O. S. = cash on shipment C/P = charter partyCTC = Central Trust of ChinaC. T. L = constructive total loss CTPC = China Trade &Productivity CenterC. W. O. = cash with order D/A = (1) documents against acceptance(2) days after acceptanceD/D = (1) demand draft(2)documentary draft Dd. = delivered Deb. = debenture Dis. = discount Dishd. = dishonoredDiv. = dividendD/N = debit notedo. = ditto (= the same)D/O = delivery orderdoz. = dozenD/P = documents against 运费及保险费在内价 --- 运费保险费及汇费在内价 --- 运费保险费及利息在内价 --- 公司①贷项清单 ②巡回支票③寄售通知书 ①转下页 ② 请……转交 ①现款支票 ②原产地证明书 付款交货 手续费,佣金 领事发票寄售品公司付款装运 租船契约 中央信托局 推定全损 中国生产力中心---paymentDr. = (1) debtor (2)doctor d. r. = deposit receiptd/s= days'sightD/W = dock warrantd. W. = dead weightE. & O. E. = errors and omissions exceptede. g. = exempli gratia ( = for example) 付现订购⑴承兑交单---⑵承兑后若干日付款⑴即期汇票⑵跟单汇票已交货公司债券折扣拒绝支付,拒绝承兑红利,股息借项清单同上提货单一打付款交单⑴借方⑵博士存款收据见票后,若千日付款仓库保单载重量有错当改---例如---Encl. = enclosureEsq. = Esquireetc. = etcetra (= and so forth)f.a.=f.a.a.=free of all averagef.a.q. = fair average qualityf.a.q.s. = fair average quality of the season fav. = favorF.B.E. = foreign bill of exchangeF.C.S. = F.C.&S. = free of capture and seizure F/D = ①forward delivery②free docksFED/CBC = Foreign Exchange Department Central Bank of Chinaf.g.a. = free of general averagef.i.= for instanceFin.stat. = financial statementF.O. = ①firm offer②free oversidef.o.b. = FOB = free on boardf.o.c. = free of chargesf.o.r. = free on railF. P. = floating policyf.p. = ①fully paid②=floating policyf.p.a. = free from particular averageF. R. B. = Federal Reserve BankFrt.= freightf.s. = foire suireg.a. = general average 附件先生(英),律师(美)等等全损险(全损赔偿)平均中等品质本季中级品---好意,书信外国汇票虏获夺取不赔条款---①定期交货②船坞交货中央银行外汇局---不保共同海损(共同海损不赔偿) 例如财务报表①稳固报价②输入港船上交货价船上交货价免费火车上交货价船名未定保单gall.= galls = gallong. b.= Gold bondsgr. = ⑴grain⑵grain⑶gram = gramme(英)gr.wt. = gross weightgs. = guineasg.t.c. = good till cancelledG.V. = grande vitesseH.I.H. = His or Her Imperial HighnessH. O. = head officeHon. Con. = Honorary Consul h. p. n. = horsepower nominal I. B. = invoice bookib.=id.=ibidem(=in the same place)IBRD = International Bank for Reconstruction and DevelopmentICA = International Cooperation Administration ICC = International Chamber of Commercei.e. = id est = that isin loc. =in locoin ex. = in extenso (=in full length) hi re. = in the matterinsol. = insolvencyinst. = ①installment = instalment(2)instant (=this month) ①全额付清②船名未定保单不保单独海损(单独海损不赔偿)美国联邦准备银行运费,货物转送电报共同海损加仑黄金证券①0.0648公克,最小的的重量单位②珍珠的重量单位=50毫克或V4克拉3) 公克=gramme(英)毛重英国金币名取消前有效快车国王,天皇,女王,皇后---总公司名誉领事名义马力发票薄在同处,在同一书(章)内国际复兴开发银行(世界银行)---Instn. = ①institution②instruction int. = interestin trans. = in transit Inv. = invoice 国际合作总署---国际商会---即在……地方详细地关于无力付款(1)分期付款(2)本月①设备②通知,指示利息运输中发票I.O.P = irrespective of percentageI.O.U.= I owe youi.q. = idem quod (= the same as)I.Q. = import quotaISB = International Settlement Bankj.a. = jt. a/cJETRO = Japan External Trade Organization JI. = journalJr. =juniorkg. = kilo = kilogram 免赔额不适用条款借条同上,如同进口配额国际清算银行共同存款,联合户头(=joint account) 日本贸易振兴会kl. = kiloliterkm. = kilometerL C. = L/C = letter of creditL D.Tel. = long-distance telephoneL/G = loss and gainLtd. = Ld. = limitedMax = maximumm/d = months after dateMdse. = merchandiseMemo. = memo = memorandum Messrs. = MessieursMfg. = manufacturingMgr. = managerMin. = minmumM.I.P. = marine insurance policyMkt. = marketM.O. = money orderM.P. = ①Member of Parliament②military policeM.R. = mate's receiptM.S. = mail steamerMSS. = manuscriptsN/A = ①no advice②no account③new accountN.B. = ①nota bene (=take notice)②new bondN/E = n. e. = not enoughn.e.i. = non est inventus (= is not found) N. F. = no fundNo. = number ---细目帐,流水帐年幼者,大学三年级学生,后进者公斤公升公里信用状长途电话损益有限的最大限度发票后……月付款商品备忘录,摘要先生们,贵公司,宝号制造经理最小限度海上保险证书市场拨(或汇)款单①国会议员N/O = no ordersNom. Cap. = nominal capitalNo Red. = no reductionN. R. = no riskN/S = not sufficient fundN. Wt. = net weighto/a = on account ofo/c = ①overcharge②open charter③old chartero/d = ①on demand②overdraftOECD=Organization for Economic Cooperation and DevelopmentOEEC=Organization for European Economic CooperationOJT=on the job training O.K.=all correctO.P.=open policy ②宪兵收货单(大副收据)邮轮原稿,手抄本①无通知②无存款③新帐户①注意②新证券不够不在,看不到---缺乏资金编号无指示名义资本不减价无危险存款不足净重因为,在……帐户①超载②开口租船契约③旧租船契约①兑现时付款式②透支经济合作发展组织---欧洲经济合作组织---在职训练正确无误,可以,已知统保单O.R. = ①owner's risk②official receiverO/No. = order numberO/S = ①on sale②out of stock③old styleoz.(ozs.) = ouncep.(pp.) = page (pages)P.A. = ①particular average②personal account③power of attorneyp. a. = per annumpayt. = paymentP.& L. = profit and lossp. c. = petty cashPer Pro. = per procurationper s.s. (or m.v., m.s.) =per steamship (or motor-vessel, motorship) = ex s.s.P. L = partial losspm. = prem. = premiump.m. = P.M. = post meridiem ①货主承担风险②法定破产管理人订单编号①出售的②库存缺货③旧式英两页①单独海损②私人存款③委任书每年付款损益杂费,零钱代理的装……轮P.M. = ①postmaster②post mortem③Prime MinisterP.M.O. = postal money orderP.N. = P/N = promissory notep. o. c. = port of callP. O. D. = pay on deliveryp. p. a. = percent per annump. p. s. = post postscriptPR = public relationsPref.Shr. = preference shareprox. = proximoP. T. O. = please turn overQ. = quantityQlty. = qualityqt. = quartQ.T. = q.t. = quietQuotn.= quotationq.v.= quod videQy. = quayRecd. = receivedR/D = refer to drawerR.E. =Royal ExchangeRec'd Pay't = received paymentref. =referencereg. =registeredrem. = ①remittance②remarkR.P. =reponse payee (=reply paid)r.s.v.p. =repondez s'il vous plait (=please reply) ------分损保险费午后①邮政局长②死后③首相(总理)(英)邮政拨(或汇)款单期票暂停港付款交货年利率再者,后记公共关系优先股下月请阅背面数量(quantity sale = 大量削价出售)品质(quality control = 品质管制)夸尔(四分之一加仑或约1.14公升) 安静的(on the Q.T. = 秘密)报价单参阅码头$ = dollarS. B. = ①sales book②savings bankSE = system engineering Sig. = signatureS.L. = salvage loss 收讫向发票人查询伦敦交易所款项收讫参阅挂号①汇款②备注回信邮资付讫请回覆---美元①销售帐簿②储蓄银行系统设计签署救难损失S.O = ①shipping order②ship's option③seller's optionSOP = standing operating procedure S.O.S = save our ship or soulss.p.a.= subject to particular average s.s. = steamshipSurv.= surveyor ①装运通知书②船方有权决定③卖方有权决定固定作业程序---海难求救信号以不保单独海损为条件T. = ①ton②tareT. A. = telegraphic addressT & Dft. = tare and draftT. C. = ①telegraph collationne②till countermandedT. D. O. = transshipment delivery order Tel. = ①telephone②telegramtfr. = transferThro' B/L = through bill of ladingT.L.O. = total loss onlyT.R. = ①telegramme restante②trust receiptT.S.V.P. = tournez s'il vous plaitT. T. = telegraphic transferU.K. = United KingdomUll. = ullageult. = ultimou/w = underwriterv.g. = verbi gratiavia. = via ( =by way of)VIP = very important personviz = videlicet ( = namely)vs. = versusW. A. = with averageW. B. =①water ballast②way billW.O. = waiting orderW.P.A. = w.p.a. = with particular aveage W.R. = ①war risk②warehouse receiptx.c. = ex coupon 汽船公证人①吨②皮重电报挂号皮重和包含物①校对电报②至取消为止转船提货单---①电报②电话①转让②股票过户直接提单保全险①待领电报②信托收据请阅背面电汇英国漏损,不足上月保险商例如经由……重要人物,贵宾x.in. = ex interestx.d. = ex dividend(英)Xm = Xmas = Christmas x.m.p. = extra message paid XX = good qualityXXX= very good quality XXXX = best qualityYrs. = ①yours②years 就是,即对保单独海损险(水渍险)①底货②运货单等候订单保单独海损险(水渍险)---①兵险②仓库收据,存货单无票息无利息无红利的= dividend off(美)圣诞节特别传免费付讫良好品质极佳品质优等品质①贵公司②若干年。
CS 37 C++ ProgrammingInstructor: Chris Macadam Spring 2016 Email: cmacadam@Programming Assignment #1Date Due:Rough draft 02/22 Upload .cpp file to Blackboard.Final 02/29 See Deliverables section below.Deliverables:- A hard copy of your program (.cpp file only) with the output results appended at the end.- A copy of the same uploaded to Blackboard under the Assignment 1 section.Requirements:- Use the template provided on Blackboard (Assignment_1_Template.txt).- Staple your hard copy together if it is more than one page long.Grading:- 50 points possible- 4 functions (40 pts)Comments 1 ptConsistency/Readability 2 pts- Spacing / Indentation / StyleFunction works 5 ptsRequired elements 2 pts- Use tools that have been covered in class- Rough draft (5 pts) - Have at least one function coded.(Program does not have to be fully functional at Rough draft).- While you may collaborate, you are expected to turn in your own work.Description:Old MacDonald has a farm and not only does he have animals, he also has 1000 acres on which to grow his crops. The problem is that it is becoming more difficult to decide which crop is most profitable so he needs some help. Given the data below, write a program that will help Old MacDonald decide which crop is the most profitable to grow.Program requirements:1 - Allow all the data from the table to be entered by a user (no % entered for increase).2 - Calculate projected range of net profit and the average net profit for each crop.Minimum Gross Profit (MnGP)= (yield * $/bushel * acres)Maximum Gross Profit = MnGP + (MnGP * increase)** You need to include the cost of growing the crop to get the net profit range.3 - Print out the minimum net profit, maximum net profit and the average net profit for each crop.4 - Tell Old MacDonald which crop he should plant to maximize his profit.- The crop with the best average profit.Results of the program:/*Enter the crop name: Sweet cornEnter cost, yield, price per bushel, and increase data: 45.25 173 0.54 4.7Minimum Profit Maximum Profit Average ProfitSweet corn $48170.00 $52560.74 $50365.37Enter the crop name: WheatEnter cost, yield, price per bushel, and increase data: 43.00 200 0.43 3.1Minimum Profit Maximum Profit Average ProfitWheat $43000.00 $45666.00 $44333.00Enter the crop name: SoybeansEnter cost, yield, price per bushel, and increase data: 37.50 157 0.68 5.3Minimum Profit Maximum Profit Average ProfitSoybeans $69260.00 $74918.28 $72089.14Enter the crop name: Green beansEnter cost, yield, price per bushel, and increase data: 40.80 118 0.72 2.7Minimum Profit Maximum Profit Average ProfitGreen beans $44160.00 $46453.92 $45306.96Old MacDonald, you should plant Soybeans*/Challenge OptionUsing arrays, gather and store all the input data before printing out the results. Results must be in the format shown below./*Enter the crop name: Sweet cornEnter cost, yield, price per bushel, and increase data: 45.25 173 0.54 4.7Enter the crop name: WheatEnter cost, yield, price per bushel, and increase data: 43.00 200 0.43 3.1Enter the crop name: SoybeansEnter cost, yield, price per bushel, and increase data: 37.50 157 0.68 5.3Enter the crop name: Green beansEnter cost, yield, price per bushel, and increase data: 40.80 118 0.72 2.7Crop Minimum Profit Maximum Profit Average ProfitSweet corn $48170.00 $52560.74 $50365.37Wheat $43000.00 $45666.00 $44333.00Soybeans $69260.00 $74918.28 $72089.14Green beans $44160.00 $46453.92 $45306.96Old MacDonald, you should plant Soybeans*/。
1.是不是一个父类写了一个virtual 函数,如果子类覆盖它的函数不加virtual ,也能实现多态? virtual修饰符会被隐形继承的。
private 也被集成,只事派生类没有访问权限而已。
virtual 可加可不加。
子类的空间里有父类的所有变量(static除外)。
同一个函数只存在一个实体(inline 除外)。
子类覆盖它的函数不加virtual ,也能实现多态。
在子类的空间里,有父类的私有变量。
私有变量不能直接访问。
————————————————————————–2.输入一个字符串,将其逆序后输出。
(使用C++,不建议用伪码)#include <iostream>using namespace std;void main(){char a[50];memset(a,0,sizeof(a));int i=0,j;char t;cin.getline(a,50,’\n’);for(i=0,j=strlen(a)-1;i<strlen(a)/2;i++,j–){t=a[i];a[i]=a[j];a[j]=t;}cout<<a<<endl;}//第二种string str;cin>>str;str.replace;cout<<str;————————————————————————–3.请简单描述Windows内存管理的方法。
内存管理是操作系统中的重要部分,两三句话恐怕谁也说不清楚吧~~我先说个大概,希望能够抛砖引玉吧当程序运行时需要从内存中读出这段程序的代码。
代码的位置必须在物理内存中才能被运行,由于现在的操作系统中有非常多的程序运行着,内存中不能够完全放下,所以引出了虚拟内存的概念。
把哪些不常用的程序片断就放入虚拟内存,当需要用到它的时候在load入主存(物理内存)中。
这个就是内存管理所要做的事。
内存管理还有另外一件事需要做:计算程序片段在主存中的物理位置,以便CPU调度。
二级C语言真题2015年03月-(2)一、选择题1、下列叙述中正确的是______。
A.每一个结点有两个指针域的链表一定是非线性结构B.所有结点的指针域都为非空的链表一定是非线性结构C.循环链表是循环队列的链式存储结构D.线性结构的存储结点也可以有多个指针2、使用白盒测试方法时,设计测试用例应根据______。
A.程序的内部逻辑 B.程序的复杂结构 C.程序的功能 D.使用说明书3、在医院,每个医生只属于某一个诊疗科,医生同一天可为多位患者看病,而一名患者可在多个科室治疗。
则实体医生和患者之间的联系是______。
A.多对多 B.多对一 C.一对多 D.一对一4、设序列长度为n,在最坏情况下,时间复杂度为O(log2n)的算法是______。
A.二分法查找 B.顺序查找 C.分块查找 D.哈希查找5、设数据集合为D={1,3,5,7,9},D上的关系为R,下列数据结构B=(D,R)中为非线性结构的是______。
A.R={(5,1),(7,9),(1,7),(9,3)} B.R={(9,7),(1,3),(7,1),(3,5)}C.R={(1,9),(9,7),(7,5),(5,3)} D.R={(1,3),(3,5),(5,9)}6、深度为7的二叉树共有127个结点,则下列说法中错误的是______。
A.该二叉树有一个度为1的结点 B.该二叉树是满二叉树C.该二叉树是完全二叉树 D.该二叉树有64个叶子结点7、某二叉树的中序序列为BDCA,后序序列为DCBA,则前序序列为______。
A.DCBA B.BDCA C.ABCD D.BADC8、下面能作为软件需求分析工具的是______。
A.PAD图 B.程序流程图C.甘特图 D.数据流程图(DFD图)9、下面不属于对象主要特征的是______。
A.唯一性 B.多态性 C.可复用性 D.封装性10、关系R经过运算σ(A=B∧G>4∧D>3)(R)的结果为______。
Intermediate MacroeconomicsFall 2015Assignment 1 (Answer sheet) Due: Oct. 13Multiple choicesShort Answers:Intermediate MacroeconomicsFall 2015Assignment 1Due: Oct. 13Multiple Choices:1.All of the following are types of macroeconomics data except the:A.price of an IBM computer.B.growth rate of real GDP.C.inflation rate.D.unemployment rate.2. A measure of how fast prices are rising is called the:A.growth rate of real GDP.B.inflation rate.C.unemployment rate.D.market-clearing rate.3.Recessions are periods when real GDP:A.increases slowly.B.increases rapidly.C.decreases mildly.D.decreases severely.pared with a recession, real GDP during a depression:A.increases more rapidly.B.increases at approximately the same rate.C.decreases at approximately the same rate.D.decreases more severely.5.Deflation occurs when:A.real GDP decreases.B.the unemployment rate decreases.C.prices fall.D.prices increase, but at a slower rate.6.Exogenous variables are:A.fixed at the moment they enter the model.B.determined within the model.C.the outputs of the model.D.explained by the model.7.Endogenous variables are:A.fixed at the moment they enter the model.B.determined within the model.C.the inputs of the model.D.from outside the model.8.Important characteristics of macroeconomic models include all of the following except:A.simplifying assumptions.B.functional relationships based on controlled experiments.C.endogenous and exogenous variables.D.implicit or explicit consistency with microeconomic foundations.9.The assumption of continuous market clearing means that:A.sellers can sell all that they want at the going price.B.buyers can buy all that they want at the going price.C.in any given month, buyers can buy all that they want and sellers can sell all that they want at thegoing price.D.at any given instant, buyers can buy all that they want and sellers can sell all that they want at thegoing price.10.How does the distinction between flexible and sticky prices impact the study of macroeconomics?A.The study of flexible prices is confined to microeconomics, while macroeconomics focuses onsticky prices.B.Macroeconomists use flexible prices to explain inflation and sticky prices to explainunemployment.C.Flexible prices are typically assumed in the study of the long run, while sticky prices are assumedin the study of the short run.D.Endogenous variables are measured using flexible prices, while exogenous variables aremeasured using sticky prices.11.The economic statistic used to measure the level of prices is:A.GDP.B.CPIC.GNPD.Real GDP12.GDP is all of the following except the total:A.expenditure of everyone in the economy.B.income of everyone in the economy.C.expenditure on the economy's output of goods and services.D.output of the economy.13.The total income of everyone in the economy is exactly equal to the total:A.expenditure on the economy's output of goods and services.B.consumption expenditures of everyone in the economy.C.expenditures of all businesses in the economy.ernment expenditures.14.An economy's ______ equals its ______.A.consumption; incomeB.consumption; expenditure on goods and servicesC.expenditure on goods; expenditures on servicesD.income; expenditure on goods and services15.Which of the following is a flow variable?A.WealthB.the number unemployedernment debtD.income16.All of the following are a stock except:A. a consumer's wealth.B.the government budget deficit.C.the number of unemployed people.D.the amount of capital in the economy.17.The amount of capital in an economy is a ______ and the amount of investment is a ______.A.flow; stockB.stock; flowC.final good; intermediate goodD.intermediate good; final good18.To compute the value of GDP:A.goods and services are valued at market prices.B.the sale of used goods is included.C.production for inventory is not included.D.goods and services are valued by weight.19.Since GDP includes only the additions to income, not transfers of assets, ______ are not included inthe computation of GDP.A.final goodsed goodsC.consumption goodsD.goods produced for inventory20.When a firm sells a product out of inventory, investment expenditures ______ and consumptionexpenditures ______.A.increase; decreaseB.decrease; increaseC.decrease; remain unchangedD.remain unchanged; increase21.Assume that a rancher sells McDonald's a quarter-pound of meat for $1 and that McDonald's sellsyou a hamburger made from that meat for $2. In this case, the value included in GDP should be:A.$0.50.B.$1C.$2D.$322.Assume that a firm buys all the parts that it puts into an automobile for $10,000, pays its workers$10,000 to fabricate the automobile, and sells the automobile for $22,000. In this case, the value added by the automobile company is:A.$10,000.B.$12,000.C.$20,000.D.$22,000.23.An example of an imputed value in the GDP is the:A.value-added of meals cooked at home.B.housing services enjoyed by homeowners.C.services of automobiles to their owners.D.value of illegal drugs sold.24.The underground economy:A.is included in the latest GDP accounts.B.includes only illegal activities.C.includes domestic workers for whom Social Security tax is not collected.D.excludes the illegal drug trade.25.Nominal GDP is measured in _____ dollars _____ time.A.current; at a point inB.current; per unit ofC.constant; at a pointa inD.constant; per unit of26.Real GDP means the value of goods and services is measured in ______ prices.A.CurrentB.ActualC.ConstantD.Average27.If nominal GDP in 2009 equals $14 trillion and real GDP in 2009 equals $11 trillion, what is thevalue of the GDP deflator?A.0.79B. 1.03C. 1.27D. 1.3028.The GDP deflator is equal toA.the ratio of nominal GDP to real GDP.B.the ratio of real GDP to nominal GDP.C.real GDP minus national GDP.D.nominal GDP minus real GDP.29.If nominal GDP grew by 5 percent and real GDP grew by 3 percent, then the GDP deflator grew byapproximately ______ percent.A. 2B. 3C. 5D.830.Nominal GDP measures the value of goods and services in ______ prices, while real GDP measuresthe value of goods and services in ______ prices.A.foreign; domesticB.domestic; foreignC.current; constantD.constant; current31.In the national income accounts, consumption expenditures include all of the following excepthousehold purchases of:A.durable goods.B.nondurable goods.C.new residential housing.D.services.32.In the national income accounts, goods bought for future use are classified as which type ofexpenditure?A.ServicesB.Investmenternment purchases exports33.In the national income accounts, government purchases are goods and services purchased by:A.the federal government.B.the federal and state governments.C.state and local governments.D.federal, state, and local governments.34.All of the following actions are investments in the sense of the term used by macroeconomists except:A.IBM's building a new factory.B.corner candy store's buying a new computer.C.John Smith's buying a newly constructed home.D.Sandra Santiago's buying 100 shares of IBM stock.35.In 2010 in the United States, the approximate percentage of GDP that was spent on consumptionwas:A.67 percentB.50 percent.C.31 percent.D.16 percent.36.GNP equals GDP ______ income earned domestically by foreigners ______ income that nationalsearn abroad.A.plus; plusB.minus; minusC.minus; plusD.plus; minus37.National income differs from net national product by an amount called:A.depreciation.B.indirect business taxes.C. a statistical discrepancy. foreign factor income payments.38.Disposable personal income:A.is computed by subtracting personal tax and nontax payments from personal income.B.is generally greater than personal income.C.includes corporate profits but not dividends.D.does not include government transfers to individuals.39.Prices of items included in the CPI are:A.averaged with the price of every item weighted equally.B.weighted according to amount of the item produced in GDP.C.weighted according to quantity of the item purchased by the typical household.D.chained to the base year by the year-to-year growth rate of the item.40.Measuring the rate of inflation using a market basket that excludes food and energy prices ispreferred by some analysts because this measure, called core inflation,A.provides a real, rather than a nominal, rate of inflation.B.gives a better measure of ongoing, sustained price changes.C.is more consistent with measures of inflation used in other countries.D.fluctuates more than measures of inflation that include food and energy prices.41.Unlike the GDP deflator, the CPI includes the prices of:A.goods purchased by firms.B.goods purchased by governments.C.exported goods.D.imported goods.42.The labor force equals the:A.adult population.B.number of employed individuals.C.number of unemployed individuals.D.number of employed and unemployed individuals.43.If 7 million workers are unemployed, 143 million workers are employed, and the adult populationequals 200 million, then the unemployment rate equals approximately ______ percent.A. 3.5B. 4.7C. 4.9D.744.If the unemployment rate is 6 percent and the number of employed is 188 million, then the laborforce equals ______ million.A.11.28B.176.72C.188D.20045.If an increasing proportion of the adult population is retired, then the labor force participation rate:A.will increase.B.will decrease.C.will remain constant.D.may increase, decrease, or remain constant.46.The employment statistics computed from the establishment survey do not include:A.workers with two jobs.B.the self-employed.C.workers on firms' payrolls.D.part-time workers on firms' payrolls.47.An estimate of total employment in the economy can be obtained from:A.both the household and establishment surveys.B.from the household survey, but not from the establishment survey.C.from the establishment survey, but not from the household survey.D.from neither the household nor the establishment surveys.48.A woman marries her butler. Before they were married, she paid him $60,000 per year. He continuesto wait on her as before (but as a husband rather than as a wage earner). She earns $1,000,000 per year both before and after her marriage. The marriage:A.does not change GDP.B.decreases GDP by $60,000.C.increases GDP by $60,000.D.increases GDP by more than $60,000.49.The circular flow model shows that households use income for:A.consumption, saving, and factor payments.B.consumption, taxes, and factor payments.C.taxes, saving, and factor payments.D.consumption, taxes, and saving.50.In the circular flow model, households receive income from the _____ market and save through the_____ market.A.goods; financialB.factor; financialC.goods; factorD.factor; goods51.An economy's factors of production and its production function determine the economy's:bor force participation rate.B.budget surplus or deficit.C.population growth rate.D.output of goods and services.52.The two most important factors of production are:A.goods and services.bor and energy.C.capital and labor.D.saving and investment.53.A production function is a technological relationship between:A.factor prices and the marginal product of factors.B.factors of production and factor prices.C.factors of production and the quantity of output produced.D.factor prices and the quantity of output produced.54.If an increase of an equal percentage in all factors of production results in an increase in output of thesame percentage, then a production function has the property called:A.constant marginal product of labor.B.increasing marginal product of labor.C.constant returns to scale.D.increasing returns to scale.55.At any particular point in time, the output of the economy:A.is fixed because the supplies of capital and labor and the technology are fixed.B.is fixed because the demand for goods and services is fixed.C.varies because the supplies of capital and labor vary.D.varies because the technology for turning capital and labor into goods and services varies.56.The price received by each factor of production for its services is determined by:A.demand for output and supply of factors.B.demand for factors and supply of output.C.demand and supply of output.D.demand and supply of factors.57.A firm's economic profit is:A.the price of output minus the wage minus the rental price of capital.B.revenue minus costs.C.revenue plus capital costs.D.the price of output minus labor costs.58.The property of diminishing marginal product means that, after a point, when additional quantitiesof:A. a factor are added, output diminishes.B.both labor and capital are added, output diminishes.C.both labor and capital are added, the marginal product of labor diminishes.D. a factor are added when another factor remains fixed, the marginal product of the first factordiminishes.59.The real wage is the return to labor measured in:A.dollars.B.units of output.C.units of labor.D.units of capital.60.An increase in the supply of capital will:A.increase the real rental price of capital.B.decrease the real rental price of capital.C.increase the productivity of capital.D.decrease the real interest rate.61.Economic profit is zero if:A.all factors are paid their marginal products and the law of diminishing returns is valid.B.all factors are paid their marginal products and there are constant returns to scale.C.all firms maximize profits and none are competitive.D.all firms maximize profits and all factors are paid their marginal products.62.According to the neoclassical theory of distribution, if firms are competitive and subject to constantreturns to scale, total income in the economy is distributed:A.only to the labor used in production.B.partly between labor and capital used in production, with the surplus going to the owners of thefirm as profits.C.equally between the labor and capital used in production.D.between the labor and capital used in production, according to their marginal productivities.63.If output is described by the production function Y = AK0.2L0.8, then the production function has:A.constant returns to scale.B.diminishing returns to scale.C.increasing returns to scale.D. a degree of returns to scale that cannot be determined from the information given.64.Skill-biased technological change ______ the demand for high-skilled workers, while the slowdownin the pace of educational advancement reduces the supply of skilled workers, resulting in relatively _____ wages for skilled workers.A.increases; higherB.increases; lowerC.decreases; higherD.decreases; lower65.The demand for output in a closed economy is the sum of:A.public saving and private saving.B.the quantity of capital and labor and production technology.C.consumption, investment, and government spending.ernment purchases and transfer payments minus tax receipts.66.Consumption depends ______ on disposable income, and investment depends ______ on the realinterest rate.A.positively; positivelyB.positively; negativelyC.negatively; negativelyD.negatively; positively67.If the consumption function is given by C = 150 + 0.85Y and Y increases by 1 unit, then C increasesby:A.0.15 units.B.0.5 units.C.0.85 units.D. 1 unit.68.Assume that the consumption function is given by C = 150 + 0.85(Y–T), the tax function is given byT = t0 + t1Y, and Y is 5,000. If t1 decreases from 0.3 to 0.2, then consumption increases by:A.85B.425C.500D.52569.Investment goods as measured in the GDP are purchased by:A.business firms alone.B.households alone.C.business firms and households.D.business firms, households, and governments.70.When economists speak of “the” interest rate, they mean:A.the rate on 90-day Treasury bills.B.the rate on 30-year government bonds.C.the “prime” rate on loans.D.no particular interest rate, since it is assumed that various interest rates tend to move up anddown together.71.The real interest rate is the:A.rate of interest actually paid by consumers.B.rate of interest actually paid by banks.C.rate of inflation minus the nominal interest rate.D.nominal interest rate minus the rate of inflation.72.The investment function slopes ______ because there are ______ investment projects that areprofitable as the interest rate decreases.A.upward; fewerB.upward; moreC.downward; fewerD.downward; more73.If government purchases exceed taxes minus transfer payments, then the government budget is:A.balanced.B.in deficit.C.in deficit.D.endogenous.74.In examining the impact of fiscal policy, it is assumed that:A.consumption, investment, and the interest rate are endogenous variables.B.consumption, investment, and the interest rate are exogenous variables.ernment purchases, taxes, and interest rates are endogenous variables.ernment purchases, taxes, and interest rates are exogenous variables.75.The demand for the economy's output:A.is always equal to the supply, regardless of the interest rate.B.may be computed provided that we know disposable income.C.is equal to consumption, investment, and government purchases.D.is determined by government purchases and taxes.76.In the classical model with fixed income, if the interest rate is too low, then investment is too______ and the demand for output ______ the supply.A.high; exceedsB.high; falls short ofC.low; exceedsD.low; falls short of77.In a closed economy, Y–C–G equals:A.national saving.B.private saving.C.public saving.D.financial saving.78.If income is 4,800, consumption is 3,500, government spending is 1,000, and taxes minus transfersare 800, private saving is:A.300B.500C.1000D.130079.When the demand for loanable funds exceeds the supply of loanable funds, households want to save______ than firms want to invest and the interest rate ______.A.more; risesB.more; fallsC.less; risesD.less; falls80.Crowding out occurs when an increase in government spending ______ the interest rate andinvestment ______.A.increases; increasesB.increases; decreasesC.decreases; increasesD.decreases; decreasesShort answers:1.Assume that the equation for demand for bread at a small bakery is Q d = 60 – 10P b + 3Y, where Q d isthe quantity of bread demanded in loaves and Y is the average income in the town in thousands of dollars.a. If the average income in the town is 10, state the equation for Q d in terms of Pb.b. Draw a graph of the demand curve with Q d on the horizontal axis and P b on the vertical axis.Label the curve DD.a. Q d = 90 – 10P bb.2.Assume two countries have the same nominal GDP (measured in the same currency using the sameaccounting rules). Explain at least three reasons why you cannot assume that citizens in each country enjoy approximately the same level of economic well-being.Some possible, but not all, explanations include:a. different price levels in the two countries would result in different amounts of real GDP, i.e.,different quantities of goods and services available in each country;b. different-sized populations could result in different quantities of goods and services available perperson in each country;c. different levels of nonmarket production in the two countries would alter the quantity of goodsand services available in each country;d. different amounts of leisure time available (not captured in nominal GDP figures) would causeeconomic well-being to differ in the two countries;e. different distributions of income in the two countries could alter the quantity of goods andservices available to the typical citizen in each country;f. different quantities of both positive and negative externalities associated with producing GDP,such as pollution and congestion, which are not measured in GDP, would cause the different levels of economic well-being between the two countries.3.There are a number of measures of aggregate economic activity, such as GDP, GNP, nationalincome, personal income, and disposable personal income. Each of these measures can be a goodindicator depending on the issue under consideration. For each of the following issues, give your reasons for selecting one of the measures just mentioned as the best indicator to use in studying the issue:a. the proportion of income households save;b. the relative share of earnings going to labor versus capital;c. the total output of final goods and services.a. Disposable personal income provides a measure of the income households have to use foreither consumption or saving after they pay taxes.b. National income provides a measure of the income going to the factors of production.c. GDP is the most complete measure of the value of newly produced goods and services in theeconomy. In contrast, personal income includes transfer payments, which do not represent newly produced goods and services.4.Assume that GDP (Y) is 5,000. Consumption (C). is given by the equation C = 1,000 + 0.3(Y–T).Investment (I) is given by the equation I = 1,500 – 50r, where r is the real interest rate in percent.Taxes (T) are 1,000 and government spending (G) is 1,500.a. What are the equilibrium values of C, I, and r?b. What are the values of private saving, public saving, and national saving?c. Now assume there is a technological innovation that makes business want to invest more. Itraises the investment equation to I = 2,000 – 50r. What are the new equilibrium values of C, I, and r?d. What are the new values of private saving, public saving, and national saving?a. 2,200; 1,300; 4 percentb. 1,800; –500; 1,300c. 2,200; 1,300; 14 percentd. 1,800; –500; 1,3005.Consider two competitive economies that have the same quantities of labor (L = 400) and capital(K = 400), and the same technology (A = 100). The economies of the countries are described by the following Cobb–Douglas production functions:North Economy: Y = A L.3K.7South Economy: Y = A L.7K.3a. Which economy has the larger total production? Explain.b. In which economy is the marginal product of labor larger? Explain.c. In which economy is the real wage larger? Explain.d. In which economy is labor's share of income larger? Explain.a. Output is the same in both economies, given the symmetry of the parameters of theproductions function and the equal quantities of labor and capital.b. The MPL is larger in the South Economy. The MPL depends on the value of (1 –) and theaverage productivity of labor (Y/L). Since the average productivity of labor is the same inboth countries, differences in the MPL depend on the value of (1 –), which is larger in South Economy (.7) than in North Economy (.3).c. Since factors are paid according to the values of their marginal products, the real wage islarger in South Economy, because the MPL is larger in South Economy than in North Economy (from part b).d. Labor's share of income equals (1 –), which is larger in South Economy (.7) than in NorthEconomy (.3).。
The Abbreviation of InternationalBusiness EnglishI.Abbreviation of word单词的缩略1. 保留单词的第一个音节及第二个音节的第一个辅音:ANS = answer 回答,回复,TEL = telephone电话EXP = export 出口IMP = import 进口,INC = incorporated 合伙的、股份有限的PREM = premium 保险费CHEQ = cheque 支票,BAL = balance 余额、结存、差额,DEM = demurrage 滞期费DEB = debenture (海关)退税凭单,PAT = patent 专利,INT = interest 利息INV= invoice 发票,INSP= inspection 检验,CAP = capital 资本、资金2.保留单词的前两个音节:A VE = avenue 街道,AMER =American美国的,ELEC = electricity电,INSUR = insurance 保险,KILO = kilometer 公里,APPROX = approximate接近、估计,COOP = cooperation 合作,INFO= information 信息,MEMO =memorandum 备忘录,NA VI = navigation 航海,PARA = paragraph 段落,NEGO= negotiate 洽谈3. 保留单词的第一音节及其后的重要辅音或全部辅音:SHIPMT = shipment 发货、装船、载货ACPTBL =acceptable 可接受的ARRNGT = arrangement 安排COMMSN = commission 佣金、手续费A VLBL = available 可(供、买)的GOVT = government 政府IMMDLY = immediately 立刻MANF = manufacture 制造ASST = assistant 助手,ATTY= attorney 代理人,律师,CONSGT= consignment 货物、寄售4.保留单词的首尾字母:YD = yard 码, BK = bank 银行, MK = mark 标记、商标, WT = weight 重量,YR = your 你(们)的, LD = limited有限的,CY = COPY 副本TKS = thanks 谢谢, DS = days 若干日,FC = Franc 法郎,HK = hank 一卷,一束FT = foot, feet 英尺,GDS = goods 货物,HT = height 高度,JT =joint 共同,MR= mister 先生,PD= paid 已付,PR = pair 双、对,QR = quarter 四分之一,QT = quart 夸脱,FM = from 自、从,ST = street 街道,WK = week 周,如首尾字母相同,可在首尾字母间加其它字母以便区别:QLTY = quality 质量QNTY = quantity 数量5. 去元音、留辅音(除字首元音外):PLS = please 请, ART = article 物品,文章,ADMR = administrator 行政管理人BLDG = building 建筑、建设,BKG = banking 银行业务,ENCL = enclosure 附件,BTWN = between 在…之间,ARRV = arrive到达,INSTRCTN= instruction 指示,AMT = amount总计、总额、金额,INTRST = interest 利息、利益,INVTRY = inventory 存货,RCVD = received收到,RPT = repeat重复,MFR = manufacturer 制造商,MKT = market市场ABT =about关于、大概,INCLD = include包括,MSG = message 文电,MTG= mortgage抵押OBLD = obliged 感谢,QLTY = quality 质量,RGDS = regards 此致,SCHDL = schedule计划(1)用发音相似的字母(一个或几个)代替单词:UR = your你(们)的, N= and和, OZ = ounce 盎司, OFA = offer 报盘, T = ton 吨,NR / NO = number 数字、号码, NIL = nothing 无(东西)U= you 你(们)SB =somebody某人P = page 页,PC = piece 张、块,OC = our cable 我电,N = and 和,M= meter 米、公尺,IN = inch 英寸,G = gram 克,F = Fahrenheit 华氏,C = centigrade摄氏,BL = bale 包,(2)简化后辍:-ing = G, -ed = D, -er / -or / -ure = R, -ment = MT / T , -tion = TN, -able / -ible = BL -ist = ST, -al /-ial= L, -ful = FL, -ness = NS, -ize = Z, -tive =TV, -less = LS -trans = TR, -ence/ -ance/ -ency/ -ancy = C, -ion = N, -logy = G, -ism = SM, -ician = AN6. 普遍认同的固定缩略语:OCT = October十月, MON = Monday星期一, FOB = Free on Board 装运港船上交货WTO= World Trade Organization 世界贸易组织,L / C = Letter of Credit信用证, P/O ==Purchase Order 定单,CIF = cost, insurance and freight 成本、保险加运费,USD = US dollar 美元,UN = United Nations 联合国,GSP = Generalized System of Preferences 普惠制NYSE = New York Stock Exchange 纽约证券交易所,D/P Document against Payment 付款交单B/L = Bill of Lading 提单,W/W = warehouse to warehouse 仓至仓条款,II.Abbreviation of over-two-word phrases; 二词以上短语的缩略1.首字母缩略词,取每个单词的首字母构成缩略词:(ACRONYM)CEO = Chief Executive Officer 首席执行官VC =Venture Capital 风险投资PDA = Personal Data Assistant 个人数学助理,PIA = Personal Information Assistant 个人信息助理,CC = Call Center 呼叫中心,CCC = Customer Care Center 客户服务中心,CRM = Customer Relationship Management 客户关系管理中心,IMF= International Monetary Fund 国际货币基金组织, FPA= Free from Particular Average 平安险,FT = Freight Ton 运费吨,LCL = Less than Container Load 拼箱货,V AT = Value Added Tax 增值税,2.拼辍词,对原有的两个词进行剪裁, 分别取其的首部或尾部, 拼成一个新词: (blending)1.取第一个词的首部加第二个词的尾部:companding ( compressing + expanding ) 压缩扩张,modem ( modulator + demodulator ) 调制解调器,sysin ( system + input ) 系统输入设备,sysinit ( system + initialization ) 系统初始化,advertistics ( advertising+statistics ) 广告统计学,motel ( motor+ hotel ) 汽车游客旅馆2.第一个词的原形加第二个词的尾部:workfare (work+welfare)工作福利Clintonomics( Clinton+economics) 克林顿的经济政策,dollarization ( dollar + popularization ) 美元化、以美元代替本国货币,bloatware ( bloat + software ) 臃肿软件、占磁盘存量大的Lunarnaut (lunar + astronaut ) 登月宇航员3.第一个词的首部加第二个词的原形:medicaid ( medical + aid ) 美国的医疗补助方案psywarrior ( psychological + warrior)心理战专家,psychotherapy ( psychological + therapy ) 心理疗法,biochemistry ( biological + chemistry ) 生物化学,medicare ( medical + care ) 美国、加拿大国家医疗照顾制4.第一个词的首部加第二个词的首部:psywar ( psychological + warfare ) 心理战comsat ( communications + satellite) 通讯卫星。
C++面向对象程序设计实验指导书(第三版)(适用于理工科)学号:姓名:班级:指导老师:计算机系2019年7月实验1 C++程序的运行环境和运行C++程序的方法一、实验目的和要求1.熟悉VS2015的集成开发环境;2.学会使用VS2015编辑、编译、连接和运行C++程序;3.通过运行简单的C++程序,初步了解C++源程序的结构和特点;4.学会使用简单的输入输出操作。
二、实验内容1.编辑、编译、连接和运行以下的C++程序#include<iostream>using namespace std;int main(){cout<<"Hello!\n";cout<<"This is a program."<<endl;return 0;}2.编译下列程序,改正所出现的错误信息,并写出输出结果。
(1)#include<iostream>using namespace std;int main(){cin>>a;int b=3*a;cout<<"b=<<b<<\n";return 0;}(2)int main(){cout<<"Hello!\n";cout<<"Welcome to C++!";}(3)#include<iostream>using namespace std;int main(){int x,y;x=5;y=6;int z=x*y;cout<<"x*y="<<z<<endl;return 0;}3.请填空完成以下程序,并上机调试正确,写出运行结果。
#include<iostream>using namespace std;int add(int a,int b);int main(){int x,y,sum;cout<<"Enter two numbers:”<<’\n’;//在下划线处填上语句,完成用cin读入x和y__________________________________________sum=add(x,y);cout<<”The sum is:”<<sum<<’\n’;return 0;}int add(int a,int b){//在下划线处填上语句,完成计算a与b的和并返回之_________________________}实验2 C++简单程序设计练习一、实验目的和要求1.进一步熟悉VS2015的集成开发环境。
CSC415/CI6226 2011 P rogramming A ssignment 1 (100 p oints) Objectives: I n t his a ssignment, y ou w ill•Build a s pelling c orrection e ngine•Build a t ext s earch e ngine w ith L ucene, a nd•Integrate y our s pelling c orrector i nto t he t ext s earch e ngineDue: M arch 10, 2011 (Thursday) 11:59pm. L ate s ubmissions a re a llowed b ut w ill b e p enalized a t a r ate of 10% p er d ay.Teams: Y ou a re a llowed (but n ot r equired) t o w ork i n p airs f or t his a ssignment. T eams o f t wo s hould only s ubmit o ne c opy o f t heir w ork. Y ou m ay (and a re e ncouraged t o) d iscuss w ith o ther t eams, b ut should N OT t ake a ny d etailed n otes f rom t he d iscussions t hat w ill a ppear v erbatim i n y our s ource c odes and r eports.Implementation: W e s trongly r ecommend t hat y ou w rite y our p rogram i n J ava, t hough y ou m ay u se other p rogramming l anguages (e.g. C, C++, P ython) w ithout o fficial s upport (e.g. L ucene). Delivery: Y ou s hould s ubmit t he f ollowings v ia e mail t o j ungjae.kim@.sg:•A z ip f ile t hat c ontains t he c odes y ou w rote (Do N OT i nclude d ata f iles a nd c ompiled l ibraries) •A t ext f ile w ith p rogram o utput•A d ocument i n r eadable E nglish s entences w ith f igures o r t ables a s n eeded. T he d ocument should N OT h ave m ore t han 4 p ages (excluding f igures a nd t ables). I t s hould c ontain o The n ames o f t eam m emberso Descriptions o f w hat y ou h ave d one f or e ach p art, r epresentative o utput f rom y our program, a ny n otable d esign d ecisions m ade o r t rade-‐offs c onsidered (withjustifications), a nd a n e rror a nalysis o f w hen y our s ystem f ailso Detailed i nstructions o n h ow t o c ompile a nd r un t he c odes f or e ach p art, i ncluding where t o p lace d ata f iles a nd l ibraries u sed. I f y ou u se a ny o ther r esource f iles e xceptthose p rovided b y u s, p lease p lace t hem i n a W eb s ite (e.g. N TU M ySite) a nd d escribehow t o d ownload t hem s o t hat w e c an d ownload a nd t est t hem. P lease m ake s ure t heinstructions w ork o n o ther m achines e xcept y ours b efore s ubmission. Y ou w ill l osepoints i f y our c odes f ail t o c ompile o r r un o n t he e valuator’s m achine.If y our e mail s ubmission i s r eturned b ack t o y ou a s a s pam d ue t o t he c odes b y t he N TU e mail s ystem, you s hould s ubmit t he p rogram o utput a nd t he d ocument b y e mail b y t he d eadline a forementioned a nd bring a U SB m emory d evice w ith t he c odes t o t he o ffice (N4-‐02c-‐111) d uring o ffice h ours o n M arch 11. Honor c ode: Y ou s hould n ot l ook f or p roblem a nswers e lsewhere. B ut, i f m aterial i s t aken f rom elsewhere, t hen y ou s hould a cknowledge i t. Y ou a re n ot p ermitted t o g et p rogramming h elp f rom people o ther t han y our p artner. I n g eneral, w e w ill e xpect y ou t o a ct o n y our h onor.Part 1: S pelling C orrection (40 p oints)In t his p art y ou w ill b uild a n n-‐gram b ased s pelling c orrector. I n l ecture 3 (tolerant r etrieval), w e s aw that o ne w ay t o o ffer s pelling s uggestions w as t o c ount t he p roportion o f c haracter n-‐grams t hat o verlap between t he q uery w ord a nd k nown w ords f rom a c orpus. D oing s o w ill r equire a n i nverted i ndex t hat maps n-‐grams t o d ictionary w ords a nd a s coring f unction t hat c ounts n-‐gram o verlaps b etween candidate w ords. Y ou a re o n y our o wn f or b uilding t he i nverted i ndex -‐ y ou s hould n ot u se a ny e xisting libraries o r c ode s nippets t o d o t his f or y ou. Y ou s hould i mplement t he J accard s core o f n-‐gram o verlap as d escribed i n c lass a s t he s coring f unction f or c andidate r eplacements.Take a l ook a t t he s .ntu.ir.spell.SpellingCorrector i nterface:package .ntu.ir.spell;import java.util.List;/*** Basic interface for the spelling corrector.** @author dramage (revised by kim)*/public interface SpellingCorrector {/*** Returns a list of top-scoring spelling corrections for a given* (possibly misspelled) word. The list is expected to include* the best corrected spelling. The maximum length of the* returned list will be specified, while the actual length of* the list may be smaller than it.** @param word A single word whose spelling is to be checked.* @param max The maximum number of corrections in the* returned list. Should be greater than 0.* @return A list of top-scoring corrections, with better corrections* ordered first.*/public List<String> corrections(String word, int max);}Your n-‐gram b ased s pelling c orrector w ill i mplement t his i nterface t o r eturn a l ist o f m ost l ikely candidate s pelling c orrections f or a g iven (possibly m isspelled) w ord.Your s pelling c orrector s hould r ead a ll t he w ords f rom a l arge f ile o f E nglish t ext. Y ou m ay u se t he t ext file (‘big.txt’) t hat c omes f rom P eter N orvig's p age o n H ow t o W rite a S pelling C orrector, w hich t akes a n alternative a pproach t o b uilding a s pell c hecker. [From N orvig's s ite: "The f ile i s a c oncatenation o f several p ublic d omain b ooks f rom P roject G utenberg a nd l ists o f m ost f requent w ords f rom W iktionary and t he B ritish N ational C orpus."]You m ust c omplete t he f ollowing s ub-‐problems:1.1. I mplement a n n-‐gram s pelling c orrector (named s .ntu.ir.spell.NGramSpellingCorrector) b asedon t he w ords i n t he f ile b ig.txt. B riefly d escribe y our i mplementation a nd p rovide s ome e xample mis-‐spelled w ords a long w ith t he p ossible c orrections y our a lgorithm p rovides. W hat i s t he o utput of s .ntu.ir.spell.SpellingScorer c lass (see b elow) w hen r un w ith a rguments s hown b elow (a-‐d)?What a re t he s ources o f e rrors?.ntu.ir.spell.NGramSpellingCorrector 1 ‘path t o s pelltest1.txt’.ntu.ir.spell.NGramSpellingCorrector 1 ‘path t o s pelltest2.txt’.ntu.ir.spell.NGramSpellingCorrector 10 ‘path t o s pelltest1.txt’.ntu.ir.spell.NGramSpellingCorrector 10 ‘path t o s pelltest2.txt’1.2. I n c lass, i t i s m entioned t hat a n n-‐gram b ased c orrector c ould b e u sed i n c oncert w ith a n e ditdistance f unction. W rite a n i mplementation o f L evenshtein e dit d istance a nd a n ew i mplementation of S pellingCorrector, c alled N GramWithEditDistanceSpellingCorrector, t hat w raps t he u nderlying spelling c orrector a nd r e-‐scores i ts o utput u sing t he w eighted e dit d istance f unction. I n p articular, use y our n-‐gram s pelling c orrector t o g et s ome n umber o f c losest c andidates i n t he d ictionary, score e ach w ith t he E dit d istance f unction a nd t hen s uggest t he c orrections w ith l owest e ditdistance. P rovide o utput, e xamples, a nd e rror a nalysis a s y ou d id f or s ub-‐problem 1.1, w hilereplacing ‘NGramSpellingCorrector' w ith ‘NGramWithEditDistanceSpellingCorrector' i n t hearguments.1.3. W rite a w eighted e dit d istance f unction a nd u se i t f or a n ew i mplementation o f S pellingCorrector,called N GramWithWeightedEditDistanceSpellingCorrector. Y ou s hould d efine y our o wn w eighting scheme, f or e xample, a llowing d ifferent w eights f or d ifferent k inds o f e dit o perations a nd d ifferent weights f or d ifferent c haracter r eplacements. H ow d id y ou f ind t he w eighting s cheme a nd w hy?What i s t he i mpact o f a ny c hanges o n t he s cheme? P rovide o utput, e xamples, a nd e rror a nalysis a s you d id f or s ub-‐problem 1.1, w hile r eplacing ‘NGramSpellingCorrector' w ith‘NGramWithWeightedEditDistanceSpellingCorrector' i n t he a rguments.Using S pellingScorer a nd A utomatic Q uantitative G radingThe i ncluded c lass s .ntu.ir.spell.SpellingScorer p rovides a w ay t o t est t he r esults o f y our SpellingCorrector i mplementations a cross a c ollection o f s pelling e rrors (see t he N orvig's s ite). T o r un the S pellingScorer, y ou s hould p rovide t he f ollowing t hree a rguments:1.Java c lass o f t he s pelling c orrector t o b e t ested2.The m aximum n umber o f c orrections f or e ach m is-‐spelling t o b e t ested.3.Path t o t he d ata f ile t o b e t ested (e.g. s pelltest1.txt, s pelltest2.txt).(You m ay r evise t he r eleased v ersion o f S pellingScorer f or y our p rogram i f n ecessary. F or e xample, i t does n ot a llow w hite s paces i n t he f ile p ath, a nd y ou c an r evise t o f ix t he p roblem.)For e xample, y ou m ay r un i t a s f ollows:$ j ava -‐cp b in/ s .ntu.ir.spell.SpellingScorer s .ntu.ir.spell.NGramSpellingCorrector 1data/spelltest1.txtThe S pellingScorer c hecks, f or e ach m is-‐spelling i n t he d ata f ile, i f t he l ist o f c orrections r eturned b y t he given S pellingCorrector i ncludes t he e xpected c orrected s pelling. S pellingScorer w ill r eport t he performance o f t he S pellingCorrector b ased o n t he d ata f ile.You m ust i nclude t he o utput o f t his p rogram i n y our s ubmission. W e a lso m ay u se t he S pellingScorer o n a d ifferent s et o f w ords t o e valuate t he q uality o f y our i mplementation.Part 2: L ucene (50 p oints)In t his p art y ou b uild u p a s earch e ngine f or t he c ollection o f 30,000+ T DT3 n ews a rticles (i.e. ‘tdt3.zip’) by u sing L ucene, a t ext s earch e ngine l ibrary w ritten i n J ava. T he c ollection c onsists o f t ext f iles, w here each f ile c ontains a n ews a rticle. A n e xample f ile i s s hown b elow.File: tdt3/19981001/CNN19981001_1600_1059.txt<DOC><DOCNO> CNN19981001.1600.1059 </DOCNO><DOCTYPE> NEWS </DOCTYPE><TXTTYPE> CAPTION </TXTTYPE><TEXT>General Motors is taking another step in its effort to lure customersback after strikes shut down most of its plants this summer. G.M.says it will install a safety and security system on many of its trucksand cars for free. The system is worth about $1,300. G.M. saw itsmarket share shrink from 31% in June to less than 21% in July as thestrike was taking place.</TEXT></DOC>Your t ask i s t o c reate a L ucene i ndex f or t he c ollection, w rite a p rogram t hat t akes i n a q uery f rom t he user (i.e. S ystem.in) a nd r eturns a l ist o f t op 20 d ocuments, a nd i ntegrate s pelling c orrectors w ith t he program. T he i ndex s hould h ave t he f ollowing t hree f ields: d ocno (called I Ds), d ate (inferrable f rom t he sub-‐directory n ames, e.g., 19981001), a nd t ext.2.1 I mplement s ome q ueries i n t he p rogram t o f ind t he I Ds (e.g. C NN19981001.1600.1059) o f t he documents t hat m eet t he f ollowing c onditions:a)Documents t hat c ontain b oth “New Y ork” a nd “San F rancisco”b)Documents w here t he w ords ‘helicopter’ a nd ‘hurricane’ a ppear w ithin 5 w ords o f e ach o therc)Documents w hich c ontain t he n ame “Dan R onan” a nd w as p ublished i n N ovember 19982.2 A ssume t hat w e a re i nterested i n n ews a rticles a bout s tock m arket m ore t han o thers. W rite a program t o a utomatically c ollect t erms r elated t o s tock m arket (e.g. s tock, s hare, f und), f or e xample, from t he W ikipedia p age o n s tock m arket (/wiki/Stock_market). C ount t heir frequencies i n t he T DT3 a rticles a nd a ssign q uery-‐independent w eights b etween 0 a nd 1 t o t he a rticles (cf. S ection 7.1.4 o f t he t extbook). R evise t he p rogram f rom 2.1 t o r erank t he r esults f rom t he L ucene index b y u sing t he q uery-‐independent w eights: F or e xample, c onsidering a q uery q, o ne o f i ts r esultant articles d, a nd t he o riginal s core o f d g iven b y L ucene, s core(q,d), y ou m ay a dd t he q uery-‐independent weight o f d, g(d), t o s core(d) t o o btain t he n ew s core o f d, s core’(q,d), a s f ollows:score’(q,d) = s core(q,d) + g(d)Find e xample q ueries w hose t op 20 d ocuments a re a ffected b y t he r eranking a nd t hose n ot a ffected. Discuss i f t he r eranking h elps u s a chieve t he g oal o f f ocusing o n s tock m arket a nd h ow t o i mprove i t.2.3 W rite a p rogram t hat t akes i n a m isspelled q uery, r uns t he b est s pell c orrector y ou w rote i n p art 1 o n this q uery t o s uggest a lternative s pellings, a nd q ueries t he L ucene i ndex u sing t he s uggested s pellings, printing o ut t he I Ds o f t op 20 d ocuments. S how o utput o f y our s ystem w here t he s pell c orrection d oes well a nd w here i t d oes p oorly. L ucene a lso h as a s pell c hecker. W rite a nother p rogram t hat u ses t he Lucene S pellChecker. C ompare t he r esults w ith t hose o f t he b est s pell c orrector f rom p art 1. W hich i s better a nd w hy? H ow c an y our e ngine b e i mproved?Credit f or a dvanced (10 p oints):Implement s ome o f y our s uggestions f or i mprovement f rom 2.2 a nd 2.3. T he q uality o f y our i dea, implementation, a nd w riteup w ill a ll b e c onsidered.References:•Lucene: h ttp:///java/docs/index.html•Information R etrieval a nd W eb S earch c ourse a t S tanford U niversity (source o f t his a ssignment): /class/cs276/•Topic D etection a nd T racking (TDT) P hase 3 (source o f t he T DT3 c orpus):/TDT3/Resource f iles p rovided a t t he c ourse s ite:•SpellingCorrector.java, S pellingScorer.java: A s m entioned a bove•big.txt: A c ollection o f d ocuments f rom w hich y ou m ay c ollect d ictionary w ords•spelltest1.txt, s pelltest2.txto Test d ata f iles f or s pelling c orrection, w here e ach l ine f ollows t he f ormat “a d ictionary word : a l ist o f i ncorrectly s pelled w ords”•tdt3.zip: A n ews a rticle c ollection。
C++标准库:字符串处理1.在C++中,std::string的构造函数不接受哪种参数?o A. 一个char数组o B. 一个int类型的整数o C. 一个char字符和一个size_t大小o D. 一个字符串字面量答案: B解析: std::string的构造函数不接受int类型的整数作为直接参数来构造一个字符串。
2.下列哪个方法用于将std::string转换为std::wstring?o A. std::string::to_wstring()o B. std::wstring_convert<std::codecvt_utf8<wchar_t>, wchar_t>::to_bytes()o C. std::wstring_convert<std::codecvt_utf8<wchar_t>, wchar_t>::from_bytes()o D. std::string::from_wstring()答案: C解析: std::wstring_convert的from_bytes方法用于将std::string转换为std::wstring。
3.在std::string中,find方法返回什么,如果未找到指定的子串?o A. -1o B. 0o C. 字符串的长度o D. std::string::npos答案: D解析: 如果未找到子串,find方法返回std::string::npos,这是一个表示未找到的特殊值。
4.哪个函数用于在std::string中查找第一个与给定字符集不匹配的字符的位置?o A. find_first_ofo B. find_last_ofo C. find_first_not_ofo D. find_last_not_of答案: C解析: find_first_not_of函数在std::string中查找第一个与给定字符集不匹配的字符的位置。
初级程序员下午试题2015上半年及答案解析(1/6)填空题第1题阅读以下说明和流程图,填补流程图中的空缺。
【说明】下面流程图的功能是:在给定的两个字符串中查找最长的公共子串,输出该公共子串的长度L及其在各字符串中的起始位置(L一O时不存在公共字串)。
例如,字符串“Thelight is not bright tonight”与“Tonight the light is not bri. ght”的最长公共子串为“he light isnot bright”,长度为22,起始位置分别为2和10。
设A[1:M]表示由M个字符A[l],A[2],…,A[M]依次组成的字符串;B[1:N]表示由N 个字符B[l],B[2],…,B[N]依次组成的字符串,M≥N≥l。
本流程图采用的算法是:从最大可能的公共子串长度值开始逐步递减,在A、B字符串中查找是否存在长度为L的公共子串,即在A、B字符串中分别顺序取出长度为L的子串后,调用过程判断两个长度为L的指定字符串是否完全相同(该过程的流程略)。
【流程图】图片______下一题(2/6)填空题第2题阅读以下说明和C函数,填补函数代码中的空缺。
【说明1】函数f(double eps)的功能是:利用公式图片计算并返回π的近似值。
double f(double eps){double n一1一0,s = 1. 0,term = 1. 0,pi = 0. 0;while( fabs(term》一eps ){pi=pi+term;n=(1);s=(2);term=s /n;}return pi*4;}【说明2】函数fun(char *str)的功能是:自左至右顺序取出非空字符串str中的数字字符,形成一个十进制整数(最多8位)。
例如,若str中的字符串为“iyt?67kp f398d5. j4ia2e3p12”,则函数返回值为67385423。
I:C函数2]long fun(char *str){int. i=0;long num=0;char*p=str;while(i<8 &&(3)){if(*p>= ´0´&&*p<= ´9´){num=(4)+*p一´0´;++i;}(5);}return num;}_____上一题下一题(3/6)填空题第3题阅读以下说明和C代码,填补代码中的空缺。
全国计算机等级考试二级Python真题及解析(11)全国计算机等级考试二级Python真题及解析(11)一、选择题1.以下选项对于import保留字描述错误的是A import可以用于导入函数库或者库中的函数B可以使用from jieba import lcut引入jieba库C使用import jieba as jb,引入函数库jieba,取别名jbD使用import XXX引入jieba库正确答案:B2.以下选项中不可用作Python标识符的是A3.14B姓名C__Name__D Pi正确答案:A3. Python可以将一条长语句分成多行显示的续行符号是:A\B#C;D‘正确答案:A4.关于Python语言的特点,以下选项描述正确的是 A Python语言不支持面向对象B Python语言是解释型语言C Python语言是编译型语言D Python语言是非跨平台语言正确答案:B15.关于Python整数类型,以下选项描述正确的是:A 3.14不是整数类型的数值B type(100)表达式结果可能是<class 'int'>,也可能是<class 'float'>C oct(100)表达式结果取得十六进制数D hex(100)表达式结果获得八进制数正确答案:A6.运行以下程序,输出结果的是:A 3B 2C 2.5D 2.50正确答案:CA字符串类型B浮点数类型C整数类型D复数类型精确谜底:B8.上面代码的输出结果是:>>> XXX "Pi=3.">>> eval(TempStr[3:-1])A3.B3.C Pi=3.14D3.1416正确答案:A29.以下关于异常处理的描述,错误的选项是:A Python通过try、except等保留字提供异常处理功能B ZeroDivisionError 是一个变量未命名错误C NameError是一种异常类型D反常语句可以与else和finally语句配合使用精确谜底:B10. for或者while与else搭配使用时,关于履行else语句块描述精确的是A仅轮回非一般竣事后履行(以break竣事)B仅轮回一般竣事后履行C总会履行D永不履行精确谜底:B11.以下代码执行的输出结果是:for i in range(1,4)print(chr()*(2*i-1))A咎XXXXXXB咎XXXXXXC咎XXXXXXD出错精确谜底:B312.以下关于TensorFlow库的应用领域的描述,正确的选项是A机器研究B数据可视化C Web开发D文本分析精确谜底:A13.以下不属于Python深度研究第三方库的选项是:A ArcadeB TensorFlowC Caffe2D XXX正确答案:A14.以下属于Python文本处理第三方库的选项是:A matplotibXXXXXXD vispy精确谜底:B15. random库的seed(a)函数的作用是A生成一个[0.0, 1.0)之间的随机小数B生成一个k比特长度的随机整数C设置初始化随机数种子aD生成一个随机整数正确答案:C16.下面代码的输出结果是4for n in range(400,500):i = n // 100j = n // 10 % 10k = n % 10if n == i ** 3 + j ** 3 + k ** 3:print(n)A 407B 408C 153D 159正确答案:A17.给出上面代码:a = input("").split(",")x = 0while x < len(a):print(a[x],end="")x += 1代码履行时,从键盘取得Python语言,是,脚本,语言则代码的输出结果是A执行代码出错B Python语言,是,脚本,语言C Python语言是脚本语言D无输出精确谜底:C18.关于函数的描述,毛病的选项是A Python使用del保存字定义一个函数B函数能完成特定的功能,对函数的使用不需要了解函数内部实现原理,只要了解函数的输入输出方式即可。
CC++面试笔试题目大全,面试经典收藏求下面函数的返回值(微软)int func(x){ int countx = 0;while(x){countx ++;x = x&(x—1); }return countx;}假定 x = 9999。
答案:8 思路:将 x 转化为 2 进制,看含有的 1 的个数。
2。
什么是“引用”?申明和使用“引用”要注意哪些问题? 答:引用就是某个目标变量的“别名"(alias),对应用的操作与对变量直接操作效果完全相同.申明一个引用的时候,切记要对其进行初始化。
引用声明完毕后,相当于目标变量名有两个名称,即该目标原名称和引用名,不能再把该引用名作为其他变量名的别名.声明一个引用,不是新定义了一个变量,它只表示该引用名是目标变量名的一个别名,它本身不是一种数据类型,因此引用本身不占存储单元,系统也不给引用分配存储单元。
不能建立数组的引用.3。
将“引用"作为函数参数有哪些特点?(1)传递引用给函数与传递指针的效果是一样的。
这时,被调函数的形参就成为原来主调函数中的实参变量或对象的一个别名来使用,所以在被调函数中对形参变量的操作就是对其相应的目标对象(在主调函数中)的操作.(2)使用引用传递函数的参数,在内存中并没有产生实参的副本,它是直接对实参操作;而使用一般变量传递函数的参数,当发生函数调用时,需要给形参分配存储单元,形参变量是实参变量的副本;如果传递的是对象,还将调用拷贝构造函数。
因此,当参数传递的数据较大时,用引用比用一般变量传递参数的效率和所占空间都好。
(3)使用指针作为函数的参数虽然也能达到与使用引用的效果,但是,在被调函数中同样要给形参分配存储单元,且需要重复使用"*指针变量名"的形式进行运算,这很容易产生错误且程序的阅读性较差;另一方面,在主调函数的调用点处,必须用变量的地址作为实参。
而引用更容易使用,更清晰。
第2章习题2-5、计算一个人一段时期的薪水,第1天1分钱,第2天2分钱,每天翻倍。
要求用户输入天数(输入检验),列表显示每天的薪水,及薪水总和(输出人民币的单位:“元”)。
#include<iostream>using namespace std;void main(){int daynum;float daypay, paysum=0;do{cout<<"请输入天数(>1整数):";cin>>daynum;}while(daynum<=1); //有效性检验for(int i=1; i<=daynum; i++){ daypay=i/100.0;cout<<"第"<<i<<"天薪水:"<<daypay <<"元\t";if(i%2==0)cout<<endl;paysum+=daypay; //列表输出每天薪水,计算总薪水}cout<<endl;cout<<"薪水总和:"<<paysum<<"元"; //输出总薪水}2-7、用for循环计算1/30+2/29+3/28+…+30/1。
#include<iostream>using namespace std;void main(){int i;float sum=0;for(i=1;i<=30;i++)sum+=i/float(31-i);cout<<"sum="<<sum;}2-8、用循环语句输出如下图形。
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA#include<iostream>using namespace std;void main(){int i,j,k;for(i=0;i<=3;i++) //控制行{ for(j=0;j<i;j++)cout<<' '; //控制每行输出的' '的数目for(k=7-i;k>i;k--) //控制每行输出的'A'的数目cout<<'A';cout<<endl;}for(i=1;i<=3;i++){ for(j=3;j>i;j--)cout<<' '; //控制每行输出的' '的数目for(k=0;k<2*i+1;k++) //控制每行输出的'A'的数目cout<<'A';cout<<endl;}}2-9、采用循环结构计算公式s的前30项和。
TCL_2.27笔试题⽬整理笔试形式为50分钟50道题,其中30道选择,20道判断。
包括C,python和算法题。
涉及到不熟悉或有所遗忘的知识点如下:函数指针函数存放在内存的代码区域内,它们同样有地址.如果我们有⼀个 int test(int a) 的函数,那么,它的地址就是函数的名字,这⼀点如同数组⼀样,数组的名字就是数组的起始地址。
函数指针的定义⽅式data_types (*func_pointer)( data_types arg1, data_types arg2, ...,data_types argn);int (*fp)(int a);// 这⾥就定义了⼀个指向函数(这个函数参数仅仅为⼀个 int 类型,函数返回值是 int 类型)的指针 fp。
注意:函数指针所指向的函数⼀定要保持函数的返回值类型,函数参数个数,类型⼀致。
运算符优先级enum使⽤ enum ⼯具不仅能够创建符号常量,还能定义新的数据类型。
枚举量的声明和定义(1) ⾸先,请看下⾯的语句:enum enumType {Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday};第⼀:声明 enumType 为新的数据类型,称为枚举(enumeration);第⼆:声明 Monday、Tuesday 等为符号常量,通常称之为枚举量,其值默认分别为 0-6。
(2) 接着利⽤新的枚举类型 enumType 声明这种类型的变量:enumType Weekday 就像使⽤基本变量类型int声明变量⼀样,如 int a; 也可以在定义枚举类型时定义枚举变量enum enumType {Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday}Weekday;在不进⾏强制转换的前提下,只能将定义的枚举量赋值给该种枚举的变量,也就是说 Weekday 只能是定义的 Monday-Sunday 这些定义过的枚举量。
Assessment 1
International Marketing (BX770007)
Bachelor of Applied Management
Individual Assignment
Total Marks: 100
Weightage: 30%
Due Date: 6 November
Time: Submission of report – 11:59pm
Learning outcomes covered:
1. To differentiate between internal, domestic and global marketing.
2. To examine the cultural environment of global markets.
Assignment
Write an evaluation report on an international market e.g. country, specific city (or community) for the possibilities of international business trade with an Auckland based business.
1. Compare countries/community using a market research analysis method.
2. Discuss similarities and clashes that you might face.
3. Identify your target market (abroad) e.g. demographic, geographic,
psychographic, and human behaviours.
4. Define the communication methods to be used in the host country.
5. Prove whether it is possible or not to do business in this country/community.
The report should contain following sections: cover page, table of contents, introduction, body of the report discussing the above five areas, conclusions, recommendations, and list of references. The minimum word limit for the report is 2,500 words.
Be consistent with your report formatting such as headings, sub‐headings and numbering. Use Times New Roman (size 12) font with 1.5 line spacing. You may also include appendices. Appendices contain extra or supplementary material which give extra information too detailed to be put in the main report but that you think will help illustrate some aspect of the report. Include the word count at the end of the report. Word count does not include words in title page, table of contents, list of references and appendices. Use APA 6 convention for both i n‐ text and your reference list. Wikipedia is not considered a good source of reference.
(100 marks)
International Marketing (BX77007)
Marking Schedule for Assignment 1
Comments:。