VB语言程序设计课后编程及上机调试参考答案

程序代码Private Sub Command1_Click()End SubPrivate Sub Command2_Click() = TrueEnd SubPrivate Sub Command3_Click() = TrueEnd SubPrivate Sub Command4_Click() = 10 = False = FalseEnd Sub初始窗口：单机放大之后窗口：单机下划线之后窗口：单击加粗之后窗口：自测2单击还原之后窗口：Private Sub Command1_Click()Label1 = "visual basic"Text1 = " 程序设计题"End SubPrivate Sub Command2_Click()Text1 = "visual basic"Label1 = " 程序设计题"End Sub初始窗口：单击显示之后窗口：单击交换之后的窗口：自测题3Private Sub Command1_Click()End SubPrivate Sub Command2_Click() = + 30End Sub= + 20= 1初始窗口：单击缩小两倍之后的窗口：单击向右下角移动之后的窗口：自测题4程序代码Private Sub Command1_Click() = "VB 学习"Print"简单的VB程序设计"End SubPrivate Sub Command2_Click()ClsEnd SubPrivate Sub Command3_Click()EndEnd SubPrivate Sub Command3_Click()EndEnd Sub初始化窗口：单击显示之后的窗口：单击清除之后的窗口：自测题5单击退出之后的窗口：Private Sub Comma nd1_Click()HHEnd SubPrivate Sub Comma nd2_Click() =Val + Val End SubPrivate Sub Comma nd3_Click() End End Sub初始化窗口: 单击运算之后窗口: 单击清除之后的窗口:也 I 绘I lirr-：輕 g砖屮 ZBPL H J ^E 霸赴 BAy 噹晔了 ZILT. 相0 ■tap乜=1 业 '-JS-J Q -•ST F■ I” _l ■■ B 事电r 兴/涉审叭暂背巧応科1I gMd I T B ' A bJ El -； F 」 )-1 a □瓷 a QB aitr 硕八— y -I Su日 r>M| PLi.l CnhwJ x> 蚀-7 -■nJ肝 k4・Jii.— Tr«：h^.L 33 -:呻p Ju IpL*口- i-JN h —vid.]F TM IHFLlMv ■ -UKncnm-'|LUIPI> r■41•成 &.■ B WOQULL,:■—PMd P GPrivate Sub Command1_Click()Dim a$= Left(a, 2)End SubPrivate Sub Command2_Click()= Right(a, 2)End SubPrivate Sub Command3_Click()End Sub初始窗口界面输入字符串截取前两个字符截取后两个字符字符串连接自测练习2 Private Sub Form_Click()Dim a%, b%, c%, d%, e%, f%, g%, h%, i%, j%, k%, l% a = 7349e = a Mod 10 ' 个位d = (a \ 10) Mod 10 ' 十位c = (a \ 100) Mod 10 ' 百位b = a \ 1000 ' 千位i = (e + 7) Mod 10 ' 个位h = (d + 7) Mod 10 ' 十位g = (c + 7) Mod 10 ' 百位f = (b + 7) Mod 10 ' 千位交换后的个位交换后的千位交换后的十位交换后的百位l = f * 1000 + g * 100 + h * 10 + i = FalsePrint " 加密前的4位整数是7439"; (Chr(10)); " 加密后的结果是"; l End Sub初始界面单击窗体运行后的界面自测练习1Private Sub Form_Click()Dim a%, b%, c%, d%, e%, f!a = Val(InputBox(" 输入第一个数", "b = Val(InputBox(" 输入第一个数", "f = Fix(f * 100 + / 100& "x/y=" & f, , " 输出的结果"End Sub自测练习2Private Sub Form_Click()Dim a%, b%, c%, d%, e%, f!Print " 和="; ePrint " 平均值="; f 输入一个数", 8)) 输入一个数", 7))MsgBox"x+y=" & c & Chr(10) & "x-y=" & d & Chr(10) & "x*y=" & e & Chr(10)a = Val(InputBox(" 输入第一个数的值"))b = Val(InputBox(" 输入第二个数的值"))c = Val(InputBox(" 输入第三个数的值"))d = Val(InputBox(" 输入第四个数的值"))End Sub自测练习3Private Sub Form_Click()Dim h%, f%, x%, y%h = Val(InputBox(" 输入总头数"))f = Val(InputBox(" 输入总脚数"))x = (4 * h - f) / 2y = (f - 2 * h) / 2Print " 笼中鸡的头数为"; x; 只"Print " 笼中兔的头数为"; y; 只"End Sub自测练习1：Private Sub Form_Click()Dim a%, b%, c%a = Val(InputBox(" 请输入第一条边", " 边长"))b = Val(InputBox(" 请输入第二条边", " 边长"))c = Val(InputBox(" 请输入第三条边", " 边长"))If a + b > c And a + c > b And b + c > a ThenIf a * a + b * b = c * c Or a * a + c * c = b * b Or b * b = c * c = a * a ThenPrint " 直角"ElseIf a = b And b = c ThenPrint " 等边三角形"ElseIf a = b Or a = c Or b = c ThenPrint " 等腰三角形"ElsePrint " 一般三角形"End IfElsePrint " 不是三角形"End IfEnd Sub不是三角形运行结果：初始窗口：输入三条边：运行结果：直角三角形运行结果：等边三角形运行结果如下：等腰三角形：般三角形自测练习2：Private Sub Form_Click()Dim a%, b!a = Val(InputBox(" 请输入"))If a Mod 2 = 0 And a Mod 3 = 0 And a Mod 5 = 0 Then b = Sqr(a)Print a, bElseEndEnd IfEnd Sub初始化窗口: 输入一个数: 运行结果: 自测练习3Private Sub Comma nd1_Click()Dim a%, b% a = ValSelect Case a > 0Case a < 20MsgBox "行李费为元/kg",," 行李费Case a >= 20 And a < 50MsgBox "行李费为元/kg",," 行李费Case a >= 50 And a < 100MsgBox "行李费为元/kg",," 行李费Case Elseb = * 100 + (a - 100) * : MsgBox " 行李费为"& b & "元",,"行李费End SelectEnd Sub初始窗口: 输入10: 输入25: 输入55: 输入120: 自测练习1Op tio n Base 1Private Sub Form_Click()Dim i%, a(1 To 20) As In teger a(1) = 1: a(2) = 1Print a(1);Print a(2);For i = 3 To 10 a(i) = a(i - 1) + a(i - 2)Print a(i);Next iPrintFori = 11 To 16a(i) = a(i - 1) + a(i - 2)Print a(i);Next iPrintFor i = 17 To 20 a(i) = a(i - 1) + a(i - 2) Print a(i);Next i初始界面：运行结果界面：自测练习2Option Base 1Private Sub Form_Load()= 10000= 5000End SubPrivate Sub Command1_Click()Dim i%, j%, t%, a(1 To 4, 1 To 4) As Integer For i = 1 To 4For j = 1 To 4 a(i, j) = Int(Rnd * 10) + 1a(i, j);Next jNext i " 对角线的元素如下"For i = 1 To 4 a(i, i);Next iFor i = 1 To 4 a(i, 5 - i);Next iFor i = 1 To 4 t = a(1, i) a(1, i) = a(4, i) a(4, i) = t Next iFor i = 1 To 4 t = a(i, 2) a(i, 2) = a(i, 3) a(i, 3) = t Next iFor i = 1 To 4Forj = 1 To 4 a(i, j)；Next jNext iEnd Sub运行初始界面:运行结果界面: 自测练习1Sub itostr(a As In teger)Dim b%, c$ a = VaiWhile a >= 1 c = Chr(a Mod 10+ 48) & c0 Fornnl施机;^生的拒畔相应处運输入矩阵茹处理般曲越$a = a \ 10WendEnd SubPrivate Sub Command1_Click()Dim a As Integer a = ValCall itostr(a)End Sub运行初始界面：运行结果界面：验证其他数字：自测练习2：Public Function area(n) As DoubleDim c#, d#, e#, s# n = Val c = (1 - 0) / nWhile e <= 1 d = I * c: e = (I + 1) * c s = s + (Sin(d) + Sin(e)) * c / 2 area = s WendEnd FunctionPrivate Sub Command1_Click()Dim s As DoubleCall area(n) = area(n)End Sub运行初始界面：运行结果：自测练习3Private Sub Form_click() n =Val(InputBox(" 请输入n 的值")) x = Val(InputBox(" 请输入x 的值"))Print "e 的值="; es(n, x)End SubPrivate Function es(n, x)Dim a As Double, b As Double, c As Double, i As Integer a = 1: b = 1: c = 1For i = 1 To n a = x * a: b = b * i: c = c + a / bNext i es = cEnd Function运行初始界面：输入数据：运行结果：自测练习4：For i = 1 To 4For j = i + 1 To 5If a(i) > a(j) Thent = a(i): a(i) = a(j): a(j) = tEnd IfNext jNext iFor i = 1 To 5Print a(i); " ";Next iFor i = 1 To 5If Y < a(i) Thent = a(i): a(i) = Y: Y = tEnd IfNext iFor i = 1 To 6a(6) = tNext iEnd FunctionPrivate Sub Command1_Click()Dim i#, a%(1 To 6), Y%Y = Val(InputBox(" 输入y 的值", " 输入数据"))Insertfun a%(), YPrintFor i = 1 To 6Print a(i); " ";Next iEnd Sub运行初始界面：插入数据：运行结果：自测练习1：Private Sub Command1_Click()If = 1 Then = " 报名参加羽毛球比赛" End IfIf = 1 Then = " 报名参加乒乓球比赛"If = 1 And = 1 ThenEnd If= " 报名参加羽毛球，乒乓球比赛"End IfEnd Sub运行初始界面：运行结果：自测练习4：Private Sub Form_Load()= 24 = " 黑体" = &HFF&End SubPrivate Sub Option1_Click() = " 我是学生"End SubPrivate Sub Option2_Click() = " 我是教师"End SubPrivate Sub Option3_Click() = " 我是工人"Private Sub Option4_Click()End Sub= " 我是农民"End Sub运行初始界面：运行结果：自测练习6：Private Sub Command1_Click()For i = 0 To - 1If (i) = ThenExit ForEnd IfNext iIf i > - 1 ThenEnd IfEnd SubPrivate Sub Command2_Click()If <> -1 ThenFor i = 0 To - 1If (i) = ThenEnd IfExit ForNext iEnd IfEnd SubPrivate Sub Command3_Click()End Sub运行初始界面:自测练习7：Private Sub Command1_Click()= TrueEnd SubPrivate Sub Form_Load()= 20= 20= 20= 20End SubPrivate Sub Timer1_Timer() lbltem = = + 10If VSbwd >= 100 Then lbltishi = " 水开了" = FalseEnd IfEnd Sub运行初始界面：运行结果：自测练习1：Private Sub myhelp_Click()End SubPrivate Sub mymenu1_Click() = " 百货大楼"End SubPrivate Sub mymenu2_Click() = " 利客隆"End SubPrivate Sub mymenu3_Click() = " 稻香村"End Sub运行初始界面：运行结果界面：自测练习2：Private Sub Dis_Click() = " 菜单程序设计" = 20 = " 黑体"End SubPrivate Sub Hid_Click() = FalseEnd Sub运行初始界面：运行结果界面：自测练习3：Private Sub vbhelp_Click() r = MsgBox(" 帮助", , " 程序设计题")End SubPrivate Sub Vbnew_Click() r = MsgBox(" 新建", , " 程序设计题")End SubPrivate Sub vbopen_Click() r = MsgBox(" 打开", , " 程序设计题")End SubPrivate Sub vbsave_Click()自测练习1： r = MsgBox （"存盘”，，" 程序设计题"）End Sub运行初始界面: 运行结果: 自测练习4:Private Sub Comma nd1_Click()End Sub运行初始界面:打开萱我菊園（1）：文件名oa ） ； I立件类型电》：Ir 以只读方式打开區IPrivate Sub Command1_Click()Dim a As String, n%, i%, j%我最近皈由 O ■ \ 27 我的文趋 岡上嘟居^41121(1£S □141130110041145029 口 411旳［)13_辛诒_经济L1D1 亡J jag 己1« iT^ Temp 匚PySoEt 巴第五次实脸要貳文楼 □新建文件夹g2O074£3LS294SS£4 总听ni咫S ! O S6u_p L nyi n J& 1tfySystem已義单SCX倉第五欢实脸要求丈档四寫件基^操作测试內容回数据1国數据1®数据l.dbc0掏门鄱爰甘濒SllfU 实甜直评d Hl 取消Open "E:\" For Input As #1Input #1, a n = Len(a)For i = 1 To nIf Mid(a, i, 1) = "%" Then j = j + 1 Next iClose #1Open "E:\" For Output As #1Print #1, jClose #1End Sub运行初始界面：运行结果：自测练习3：Private Sub Form_Click()Dim x$Open "e:\" For Input As #1Do While Not EOF(1)LoopClose #1Open "e:\" For Append As #1Print #1, x$Close #1Line Input #1, x$运行初始界面：自测练习4Private Sub Form_load()Print " 26 个英文字母"PrintPrint " a b c d e f g h i j k l m n o p q r s t u v w x y z" Print " 字母个数分别为"End SubPrivate Sub Form_Click()Open "E:\" For Output As #1文本$ = InputBox（" 请输入文本"） n = UCase( 文本$)Print #1, nOpen "E:\" For Output As #1For i = 1 To Len(n)ReDim Preserve a(1 To 26) j = Asc(Mid(n, i, 1)) - 64 a(j) = a(j) + 1Next iClose #1For j = LBound(a) To UBound(a)Print a(j);Next jClose #1Dim a%()。

1、B2、A3、B4、答：属性：红色、充满氢气；事件：松手、针刺；方法：飞走、爆破。

5、答：事件是指对象能够识别并作出反映的外部刺激。

事件驱动又称消息驱动，事件驱动程序设计是指每个事件对应有相应的程序代码，仅在该事件发生时，该段代码才会被执行。

事件发生的顺序决定了代码执行的顺序，因此每次执行应用程序时，程序代码并不是按照程序编写的顺序来执行的。

6、答：VB是一个包括界面设计、程序编码、调试、编译并创建可执行程序的集成开发环境。

VB的集成开发环境的主界面中包含：标题栏、菜单栏、工具栏、控件箱、工程资源管理器、属性窗口、“窗体布局”窗口、窗体设计器、代码编辑器等元素组成。

7、答： VB菜单条通常情况下有：文件、编辑、视图、工程、格式、调试、运行、查询、图表、工具、外接程序、窗口、帮助等13项菜单项组成。

8、答：工具栏可自行定义。

标准工具栏中通常情况下有：添加标准exe工程、添加窗体、菜单编辑器、打开工程、保存工程、剪切、复制、粘贴、查找、撤消、重复、启动、中断、结束、工程资源管理器、属性窗口、窗体布局窗口、对象浏览器、工具箱、数据视图窗口、可视化元件管理器等按钮组成。

9、答：创建VB应用程序的一般步骤为：创建界面；设置窗体和控件属性；编写代码；保存工程；运行并调试程序；检查并排除错误；创建可执行文件。

10、Private Sub Command1_Click()Label1.Caption = "I love vb,I hate vb"End Sub1、2、3、S1 输入待判断自然数： N（N>=2）；S2 i=2；S3 判断i是否小于N-1，若不是转S5S4 判断N除以i的余数是否为0,如果不是则i=i+1转S3；S5 判断i是否等于N，若是输出“是素数”，否则输出“不是素数”。

4、S1 输入待判断自然数： N；S2 将N转换成字符S，计算S的长度K；S3 i=1；S4 判断i是否小于K-1，若不是转S6；S5 判断S中的第i位和第K-i+1位是否相等,如果是则i=i+1转S4，如果不是则转S6；S6 判断i是否是中间位数，若是输出“是回文数”，否则输出“不是回文数”。

VB程序设计教程课后参考答案习题一一、填空题1．对象、事件驱动2．窗体、控件3．属性4．属性窗口、编程设置5．事件过程6．对象名、下划线、事件名7．Form_click8．Print form1.print “我的VB”9．主窗口、属性、工具箱、代码、窗体、工程资源管理10．菜单、快捷键二、选择题1．C 2. A 3. B 4. B 5. D 6. B C 7. A 三、简答题（略）习题二一、选择题1. D2. C3. C4. B5. C6. B7. C8. B 9. A 10. B 11. B 12. C 13. D 14. B15. A 16. A 17. A 18. A 19. B 20. C 21. A22. B 23. B 24. A 25. C 26. A 27. B 28. B29. C 30. B 31. D 32. D 33. C二、填空题1．Controlbox、Maxbutton、Minbutton2．Multiline TRUE3．******4．单文档界面（SDI）多文档界面（MDI）5．窗体显示6．Passwordchar7．_change()三、编程题（略）习题三一、基础知识题（略）二、填空题1．整型、长整型、单精度、双精度2．(x mod 10)*10+x\103．Sin(3.14*15/180)+sqr(x+exp(3))/abs(x-y)-log(3*x)4．(a+b)/(1/(c+5)-c*d/2)5．X mod 5=0 or x mod 9=06．False7．-4、3、－3、3、－4、48．CDEF10．TRUE11．变量、属性12．‘_ :13．(略)14．“”＃15．Public、通用/模块、Dim、static、private16．+ 、&、+17．Now() 、time()、日期18．Inputbox()、字符串、val()19．Msgbox()三、选择题1．B 2. C 3. A 4. B D此题有误 5. B 6. A7. D 8. B 9. B 10. C 11. D 12. B13. C 14. B 15. A 16. C 17.A 18. D19. A 20. D 21. A 22. C 23. C 24. D25. A 26. D 27. D 28. B 29. C 30. B31. C 32. B 33. C D此题有误34. C 35. A36. D 37. C 38. A 39. B 40. A 41. C42. C 43. D 44. C 45. D 46. A四、编程题1.Option ExplicitPrivate Sub Command1_Click()Dim a%, b%, c%, delta%Dim x1#, x2#, x#a = Val(InputBox("please input data to a:", "info", 1))b = Val(InputBox("please input data to b:", "info", 1))c = Val(InputBox("please input data to c:", "info", 1))If a = 0 And b <> 0 Thenx = -c / bPrint "所构成的方程是：" & b & "x" & "+" & c & "=0"Print "该一元一次方程的根是：", xEnd IfIf a = 0 And b = 0 ThenPrint "很抱歉，不能构成合法的方程！"End IfIf a <> 0 Thendelta = b * b - 4 * a * cIf delta >= 0 Thenx1 = (-b + Sqr(delta)) / (2 * a)x2 = (-b - Sqr(delta)) / (2 * a)Print "所构成的方程是：" & a & "x2" & "+" & b & "x" & "+" & c & "=0"Print "该方程的根是："Print "第一个根是：", x1Print "第二个根是：", x2Else2Print "该方程有两个虚根："Print "第一个虚根是：" & -b / (2 * a) & "+" & Sqr(Abs(delta)) / (2 * a) & "i"Print "第二个虚根是：" & -b / (2 * a) & "－" & Sqr(Abs(delta)) / (2 * a) & "i" End IfEnd IfEnd Sub2.Option ExplicitPrivate Sub Command1_Click()Dim i%, s%s = 0For i = 1 To 99 Step 2s = s + iNextPrint sEnd Sub3.Option ExplicitPrivate Sub Command1_Click()Dim i%Dim s#s = 0For i = 1 To 100s = s + 1 / i * (-1) ^ (i + 1)NextPrint sEnd Sub4.Option ExplicitPrivate Sub Command1_Click()Dim i%, n%Dim t#, s#n = Val(InputBox("please input data:", "info", 5))s = 0t = 1For i = 1 To nt = t * is = s + tNextPrint sEnd Sub5.Option ExplicitPrivate Sub Command1_Click()Dim a%, b%, c%Dim p#, s#a = Val(InputBox("please input data to a:", "info", 3))b = Val(InputBox("please input data to b:", "info", 4))c = Val(InputBox("please input data to c:", "info", 5))If (a + b > c And Abs(a - b) < c) Or (a + c > b And Abs(a - c) < b) Or ((b + c) > a And Abs(b - c) < a) Thenp = (a + b + c) / 2s = Sqr(p * (p - a) * (p - b) * (p - c))Print "三角形的面积是：" & sElsePrint "很抱歉，不能构成合法的△三角形！"End IfEnd Sub6.Option ExplicitPrivate Sub Command1_Click()Dim ji%, tu%For ji = 1 To 27For tu = 1 To 27If ji * 2 + tu * 4 = 78 And ji + tu = 27 ThenPrint "鸡的个数是：" & jiPrint "兔的个数是：" & tuEnd IfNextNextEnd Sub7.Option ExplicitPrivate Sub Command1_Click()Dim i%Dim s#, t#s = 10t = 10For i = 1 To 7t = t * 0.4s = s + t * 2NextEnd Sub8.Option ExplicitPrivate Sub Command1_Click()Dim i%, fs%, max%, min%, s%Dim ave#fs = Val(InputBox("please input score:", "info", 90))s = fsmax = fsmin = fsFor i = 2 To 7fs = Val(InputBox("please input score:", "info", 90))If max < fs Thenmax = fsEnd IfIf min > fs Thenmin = fsEnd Ifs = s + fsNextave = (s - max - min) / 5Print "该运动员的平均成绩是：" & aveEnd Sub9. ‘同学们，这道题方法很多，主要考察你对选择结构的理解，我给出其中一种方法。

VB课后习题解答第一、二章：1、简述VB6.0的主要特点答：方便、直观的可视化设计工具；面向对象程序设计方法；事件驱动的编程机制；易学易用的应用程序集成开发环境；结构化程序设计语言；完备的联机帮助功能；强大的多媒体、数据库和网络功能。

2、当正常安装VB6.0后，误把Windows子目录删除。

当重新安装Windows后，是否需要再次安装VB6.0？答：要重新安装的。

因为安装VB6.0时，有些VB程序被系统自动安装在Windows目录下，所以一旦删除Windows子目录，就必须重新安装VB6.0。

3、Visual Basic 6.0分为学习版、专业版和企业版，如何知道所安装的是哪个版本？答：在VB6.0的启动界面上，能显示对应的版本。

4、叙述建立一个完整应用程序的过程答：首先建立用户界面的控件对象（简称控件）；然后对控件属性进行设置；再对控件事件过程及编程；保存应用程序；程序调试和运行。

5、Visual Basic 6.0有多种类型窗口，若要在设计时看到代码窗口，应怎样操作？答：选择“视图”—>“代码窗口”命令或单击“工程资源管理器”窗口中的“查看代码”按钮。

6、当建立好一个简单的应用程序后，假定该工程仅有一个窗体模块。

试问该工程涉及多少个要保存的文件？若要保存该工程的所有文件，应先保存什么文件？再保存什么文件？若不这样做，系统会出现什么信息？答：涉及两个文件要保存。

先保存窗体文件（.frm），再保存工程文件（.vbp）。

若先保存工程文件，系统也会先弹出“文件另存为”对话框，要求先保存窗体文件。

7、保存文件时，若不改变目录名，则系统默认的目录是什么？答：系统默认的目录是VB988、安装Visual Basic 6.0后，帮助系统是否也已安装？答：没有。

VB6.0的帮助系统在两张光盘上，即MSDN Library，其中还包含了VC、VFP等其他语言的帮助系统。

9、如何使用Visual Basic 6.0的帮助系统？答：最方便的方法是选定要帮助的内容，然后按F1功能键，这时系统打开MSDN Library查阅器，直接显示与选定内容有关的帮助信息。

vb课后习题答案第一章习题参考答案一、填空题1、对象事件驱动2、编译运行模式解释运行模式二、简答题1、简述VB的特点。

答：①可视化的程序设计方法②面向对象的程序设计思想③事件驱动的编程机制④结构化的程序设计语言⑤高度的可扩充性⑥强大的数据库访问能力⑦支持动态数据交换⑧支持对象链接与嵌入2、简述VB的安装过程。

答：①向光驱中放入VB安装光盘；②计算机将运行自动安装程序，若没有，执行VB 目录下的Setup.exe；③根据提示逐一回答问题，并点击“下一步”；④点击“完成”；2、如何启动VB。

答：三种方法：①单击“开始”按钮，选择“程序”菜单下的“Microsoft Visual Basic 6.0 中文版”菜单项并单击；②双击桌面上的VB6.0快捷图标；③在“开始”菜单的运行对话框中输入命令来启动VB；第二章习题参考答案一、选择题：1-10、 DCACD BCBBC11-20、BADCA BBAAB21-29、AACBB CDDC二、填空题1．窗体、控件2．属性值3．属性窗口设置、代码窗口设置4．事件过程5．对象名、下划线、事件名6． Form_Click第三章习题参考答案一、选择题1、B2、C3、A4、B5、A6、C7、C二、填空题1、 11字符型、字节型、整型、长整型、单精度型、双精度型、货币型、逻辑型、日期型、对象型、变体型。

String、Byte、Integer、Long、Single、Double、Currency、Boolean、Date、Object、Variant2、双引号(英文)、#3、 ASCII、1、24、 public、通用、Dim、Static、Private、Static5、 &、+、+6、 Now()、Time、日期型三、解答题1、(3)2、(1 )3、（1）常量（关键字）（2）字符型常量（3）逻辑型常量（4）变量（5）字符串常量（6）变量（7）字符串常量（8）变量（9）日期型常量（题目应是#11/16/1999#）（10）数值型常量（单精度）4、315、（1）(1+y/x)/(1-y/x) （2）x^3+3*x*y/(2-y)（3）sqr(abs(a*b-c^3)) （4）sqr(s*(s-a)*(s-b)*(s-c))6、7、（1）13 （2）17（3）#1999-11-12# （4）zxy123ABC（3）5．25 （4）27）16 （8）“-459.65” （9）510、（4）11、（2）12、（4）第四章习题参考答案一、选择题：1—7: DAABBCD二、填空题1． 500.00%2．将字号扩大为原来的二倍3． B三、编程题（略）1．文本框、标签和命令按钮的名称分别为text1、label1、command1Private Sub Command1_Click()Label1.caption=text1.textCommand1.caption=text1.textEnd Sub2．单价、数量、折扣和应付款对应的文本框的名称分别为：text1、text2、text3和text4，计算和清除命令按钮的名称分别为：command1和command2。

自测1程序代码Private Sub Command1_Click() Label1.FontSize = Label1.FontSize + 3End SubPrivate Sub Command2_Click() Label1.FontBold = TrueEnd SubPrivate Sub Command3_Click() Label1.FontUnderline = TrueEnd SubPrivate Sub Command4_Click() Label1.FontSize = 10Label1.FontBold = FalseLabel1.FontUnderline = FalseEnd Sub初始窗口：单机放大之后窗口：单机下划线之后窗口：单击加粗之后窗口：单击还原之后窗口：自测2程序代码Private Sub Command1_Click() Label1 = "visual basic"Text1 = "程序设计题"End SubPrivate Sub Command2_Click() Text1 = "visual basic"Label1 = "程序设计题"End Sub初始窗口：单击显示之后窗口：单击交换之后的窗口：自测题3Private Sub Command1_Click()Label1.FontSize = Label1.FontSize * (0.5) End SubPrivate Sub Command2_Click()Label1.Top = Label1.Top + 30Label1.Width = Label1.Width + 20Label1.Alignment = 1End Sub初始窗口：单击缩小两倍之后的窗口：单击向右下角移动之后的窗口：自测题4程序代码Private Sub Command1_Click() Form1.Caption = "VB学习" Print "简单的VB程序设计"End SubPrivate Sub Command2_Click() ClsEnd SubPrivate Sub Command3_Click() EndEnd SubPrivate Sub Command3_Click() EndEnd Sub初始化窗口：单击显示之后的窗口：单击清除之后的窗口：单击退出之后的窗口：自测题5程序代码Private Sub Command1_Click()Text1.Text = ""Text2.Text = ""End SubPrivate Sub Command2_Click()Text3.Text = Val(Text1.Text) + Val(Text2.Text) End SubPrivate Sub Command3_Click()EndEnd Sub初始化窗口：单击运算之后窗口：单击清除之后的窗口：单击退出之后的窗口：自测练习1Private Sub Command1_Click() Dim a$a = Text1.TextLabel1.Caption = Left(a, 2) End SubPrivate Sub Command2_Click() a = Text1.TextLabel2.Caption = Right(a, 2) End SubPrivate Sub Command3_Click()Text1.Text = Label1.Caption & Label2.Caption End Sub初始窗口界面输入字符串截取前两个字符截取后两个字符字符串连接自测练习2Private Sub Form_Click()Dim a%, b%, c%, d%, e%, f%, g%, h%, i%, j%, k%, l% a = 7349e = a Mod 10 '个位d = (a \ 10) Mod 10 '十位c = (a \ 100) Mod 10 '百位b = a \ 1000 '千位i = (e + 7) Mod 10 '个位h = (d + 7) Mod 10 '十位g = (c + 7) Mod 10 '百位f = (b + 7) Mod 10 '千位j = ii = f '交换后的个位f = j '交换后的千位k = hh = g '交换后的十位g = k '交换后的百位l = f * 1000 + g * 100 + h * 10 + iText1.Visible = FalsePrint "加密前的4位整数是7439"; (Chr(10)); "加密后的结果是"; lEnd Sub初始界面单击窗体运行后的界面自测练习1Private Sub Form_Click()Dim a%, b%, c%, d%, e%, f!a = Val(InputBox("输入第一个数", "输入一个数", 8))b = Val(InputBox("输入第一个数", "输入一个数", 7))c = a + bd = a - be = a * bf = a / bf = Fix(f * 100 + 0.5) / 100MsgBox "x+y=" & c & Chr(10) & "x-y=" & d & Chr(10) & "x*y=" & e & Chr(10) & "x/y=" & f, , "输出的结果"End Sub自测练习2Private Sub Form_Click()Dim a%, b%, c%, d%, e%, f!a = Val(InputBox("输入第一个数的值"))b = Val(InputBox("输入第二个数的值"))c = Val(InputBox("输入第三个数的值"))d = Val(InputBox("输入第四个数的值"))e = a + b + c + df = e / 4Print "和="; e Print "平均值="; f End Sub自测练习3Private Sub Form_Click()Dim h%, f%, x%, y%h = Val(InputBox("输入总头数")) f = Val(InputBox("输入总脚数")) x = (4 * h - f) / 2y = (f - 2 * h) / 2Print "笼中鸡的头数为"; x; "只" Print "笼中兔的头数为"; y; "只"End Sub自测练习1：Private Sub Form_Click() Dim a%, b%, c%a = Val(InputBox("请输入第一条边", "边长"))b = Val(InputBox("请输入第二条边", "边长"))c = Val(InputBox("请输入第三条边", "边长"))If a + b > c And a + c > b And b + c > a ThenIf a * a + b * b = c * c Or a * a + c * c = b * b Or b * b = c * c = a * a ThenPrint "直角"ElseIf a = b And b = c ThenPrint "等边三角形"ElseIf a = b Or a = c Or b = c ThenPrint "等腰三角形"ElsePrint "一般三角形"End IfElsePrint "不是三角形"End IfEnd Sub不是三角形运行结果：初始窗口：输入三条边：运行结果：直角三角形运行结果：等边三角形运行结果如下：等腰三角形：一般三角形自测练习2：Private Sub Form_Click()Dim a%, b!a = Val(InputBox("请输入"))If a Mod 2 = 0 And a Mod 3 = 0 And a Mod 5 = 0 Then b = Sqr(a)Print a, bElseEndEnd IfEnd Sub初始化窗口：输入一个数：运行结果：自测练习3Private Sub Command1_Click()Dim a%, b%a = Val(Text1.Text)Select Case a > 0Case a < 20MsgBox "行李费为0.2元/kg", , "行李费"Case a >= 20 And a < 50MsgBox "行李费为0.3元/kg", , "行李费"Case a >= 50 And a < 100MsgBox "行李费为0.4元/kg", , "行李费"Case Elseb = 0.2 * 100 + (a - 100) * 0.5: MsgBox "行李费为" & b & "元", , "行李费"End SelectEnd Sub初始窗口：输入10：输入25：输入55：输入120：自测练习1Option Base 1Private Sub Form_Click()Dim i%, a(1 To 20) As Integera(1) = 1: a(2) = 1Print a(1);Print a(2);For i = 3 To 10a(i) = a(i - 1) + a(i - 2) Print a(i);Next iPrintFor i = 11 To 16a(i) = a(i - 1) + a(i - 2) Print a(i);Next iPrintFor i = 17 To 20a(i) = a(i - 1) + a(i - 2) Print a(i);Next i初始界面：运行结果界面：自测练习2Option Base 1Private Sub Form_Load() Form1.Width = 10000 Form1.Height = 5000 End SubPrivate Sub Command1_Click()Dim i%, j%, t%, a(1 To 4, 1 To 4) As Integer For i = 1 To 4For j = 1 To 4a(i, j) = Int(Rnd * 10) + 1Picture1.Print a(i, j);Next jPicture1.PrintNext iPicture3.Print "对角线的元素如下"For i = 1 To 4Picture3.Print a(i, i);Next iPicture3.PrintFor i = 1 To 4Picture3.Print a(i, 5 - i);Next iFor i = 1 To 4t = a(1, i)a(1, i) = a(4, i)a(4, i) = tNext iFor i = 1 To 4t = a(i, 2)a(i, 2) = a(i, 3)a(i, 3) = tNext iFor i = 1 To 4For j = 1 To 4Picture2.Print a(i, j); Next jPicture2.PrintNext iEnd Sub运行初始界面：运运行结果界面：自测练习1Sub itostr(a As Integer) Dim b%, c$a = Val(Text1.Text)While a >= 1c = Chr(a Mod 10 + 48) & ca = a \ 10WendText2.Text = c End SubPrivate Sub Command1_Click()Dim a As Integera = Val(Text1.Text)Call itostr(a)End Sub运行初始界面：运行结果界面：验证其他数字：自测练习2：Public Function area(n) As Double Dim c#, d#, e#, s#n = Val(Text2.Text)c = (1 - 0) / nWhile e <= 1d = I * c:e = (I + 1) * cs = s + (Sin(d) + Sin(e)) * c / 2 I = I + 1Wendarea = sEnd FunctionPrivate Sub Command1_Click() Dim s As DoubleCall area(n)Text1.Text = area(n)End Sub运行初始界面：运行结果：自测练习3Private Sub Form_click()n = Val(InputBox("请输入n的值"))x = Val(InputBox("请输入x的值"))Print "e的值="; es(n, x)End SubPrivate Function es(n, x)Dim a As Double, b As Double, c As Double, i As Integer a = 1: b = 1: c = 1For i = 1 To na = x * a:b = b * i:c = c + a / bNext ies = cEnd Function运行初始界面：输入数据：运行结果：自测练习4：For i = 1 To 4For j = i + 1 To 5If a(i) > a(j) Thent = a(i): a(i) = a(j): a(j) = tEnd IfNext jNext iFor i = 1 To 5Print a(i); " ";Next iFor i = 1 To 5If Y < a(i) Thent = a(i): a(i) = Y: Y = tEnd IfNext iFor i = 1 To 6a(6) = tNext iEnd FunctionPrivate Sub Command1_Click()Dim i#, a%(1 To 6), Y%Y = Val(InputBox("输入y的值", "输入数据")) Insertfun a%(), YPrintFor i = 1 To 6Print a(i); " "; Next iEnd Sub运行初始界面：插入数据：运行结果：41011060蓝志鹏资源1102 实验8自测练习1：Private Sub Command1_Click()If Ch1.Value = 1 ThenText1.Text = "报名参加羽毛球比赛"End IfIf Ch2.Value = 1 ThenText1.Text = "报名参加乒乓球比赛"End IfIf Ch1.Value = 1 And Ch2.Value = 1 Then Text1.Text = "报名参加羽毛球，乒乓球比赛" End IfEnd Sub运行初始界面：运行结果：自测练习4：Private Sub Form_Load() Label1.Alignment = 2 Label1.FontSize = 24 Label1.FontName = "黑体" Label1.ForeColor = &HFF&End SubPrivate Sub Option1_Click() Label1.Caption = "我是学生" End SubPrivate Sub Option2_Click() Label1.Caption = "我是教师" End SubPrivate Sub Option3_Click() Label1.Caption = "我是工人" End SubPrivate Sub Option4_Click() Label1.Caption = "我是农民" End Sub运行初始界面：运行结果：。

VB程序设计教程课后答案VB程序设计是一门广泛应用于Windows平台的编程语言，它结合了基本的编程概念和用户界面设计，使得开发者可以轻松创建功能强大的应用程序。

本文将为您提供VB程序设计教程课后答案，帮助您更好地理解和掌握VB程序设计的知识。

第一章：入门篇1. 什么是VB程序设计？VB程序设计是一种使用Visual Basic语言编写应用程序的过程。

它可以用于开发Windows桌面应用程序、数据库应用程序、Web应用程序等。

2. VB程序设计的基本组成部分有哪些？VB程序设计的基本组成部分包括窗体（Form）、控件（Controls）、事件（Events）和代码模块（Code Module）。

3. 如何创建一个VB程序？要创建一个VB程序，首先打开Visual Studio开发环境，然后选择新建项目，选择Visual Basic，再选择Windows桌面应用程序模板，最后输入项目名称并点击确定即可。

4. 如何添加窗体和控件？在VB程序中，可以通过拖放方式添加窗体和控件。

在工具箱中选择所需的控件，然后将其拖放到窗体上即可。

5. 如何给控件添加事件？控件的事件是在特定的操作或触发条件下执行的代码。

要给控件添加事件，可以在属性窗口中选择事件选项卡，然后双击所需的事件即可。

第二章：基本语法篇1. VB程序中如何定义变量？在VB程序中，可以使用Dim语句来定义变量。

例如，Dim num As Integer表示定义一个整型变量num。

2. 如何进行条件判断？在VB程序中，可以使用If...Then...Else语句进行条件判断。

例如，If num > 0 Then表示如果num大于0，则执行某些操作。

3. 如何进行循环操作？在VB程序中，可以使用Do...Loop语句、For...Next语句或While...Wend语句进行循环操作。

例如，Do While num > 0表示当num大于0时，执行某些操作。

V B 语言程序设计课后编程及上机调试参考答案ex0101Private Sub Label1_Click()Caption = " 练习 "Command1.Caption = " 确定 "Label1.FontBold = TrueLabel1.AutoSize = TrueLabel1.Caption = "Visual BasicEnd Sub ex0102Private Sub Command1_Click()Txt.Text = " 我有电脑 "End SubPrivate Sub Command2_Click()Txt.Text = " 我没有电脑 " EndSub程序设计教程Private Sub Command3_Click()Txt.Text = "" ' 一对双撇号，中间不留空 End Subex0104Private Sub Command1_Click()Dim x As Singlex = Val(Text1.Text)Text2.Text = 15 * xEnd Sub ex0202Private Sub Form_Click()Dim r As Single, s As Singler = 4.6s = 3.14159 * r A 2Text1.Text = " 圆的面积为 " & sEnd Subex0204Private Sub Command1_Click() '"Form1.WindowState = 2 ' End Sub最大化 " 按钮最大化Private Sub Command2_Click() '"Form1.WindowState = 0 '还原 "按钮还原End SubPrivate Sub Command3_Click() '"Form1.WindowState = 1 '最小化 " 按钮最小化End Sub ex0205Private Sub command1_click()Dim x As SingleDim y As Singlex = Val(Text1.Text)y = Val(Text2.Text)Text3.Text = x * x + y * y End Sub ex0206Private Sub command1_click()Dim x As Stringx = Text1.TextText2.Text = Left(x, 1) + Right(x, 1)End Sub ex0301 Private Sub Form_Load()Dim x As Integer, y As IntegerDim a As Integer, b As Integer, c As Integer x = Val(InputBox(" 请输入一个三位数 "))a = Int(x / 100) ' 求百位数b = Int(x / 10) - a * 10 ' 求十位数c = x Mod 10 ' 求个位数Showy = c * 100 + b * 10 + a ' 生成倒序数Print x; " 倒序数为： "; y ' 显示倒序数End Sub ex0302Private Sub Command1_Click()n = Val(Text1.Text)Randomizex = Int(1 + n *Rnd) Label1.Caption 第一个随机数" + Str(x)x = Int(1 + n *Rnd)Label2.Caption = " 第二个随机数" +Str(x)x = Int(1 + n *Rnd)Label3.Caption = " 第三个随机数" +Str(x)End Sub ex0303Private Sub Cmd1_Click()Lab1.Visible = TrueLab1.Caption = " 您已下达显示命令 "End SubPrivate Sub Form_Click()Cmd1.Visible = TrueEnd Subex0304Private Sub Form_KeyPress(KeyAscii As Integer)ShowPrint " 输入字符： "; Chr(KeyAscii), "ASCII 码为 ;"; KeyAscii End SubPrivate Sub Form_DblClick()ClsEnd Sub ex0305 Private Sub Form_Load()x = MsgBox(" 在这里显示提示信息 ", 4 + 0, " 请确认 ")x = MsgBox(" 在这里显示 " + Chr(13) + " 提示信息 ", 3 + 0, " x = MsgBox(" 在这里显示 " + Chr(13) + " 提示信息 ", 2 + 16 + 0,End Sub ex0401Private Sub Form_Load()Dim x As Long, s As Stringx = In putBox(" 输入一个整数(1 〜35000)")s = " 奇数"If x Mod 2 = 0 Then s = " 偶数"MsgBox s End Sub ex0402Private Sub Command1_Click()Dim a As Single, b As SingleDim c As Single, d As SingleDim m As Single, n As Single, x As SingleShowa = Val(Text1.Text)b = Val(Text2.Text)c = Val(Text3.Text)d = Val(Text4.Text)If a > b Then ' 求 a、b 中的较大数m = aElsem = bEnd IfIf c > d Then ' 求 c、d 中的较大数n = cElsen = dEnd IfIf m > n Then ' 求 m、n 中的较大数x = mElsex = nEnd IfText5.Text = x 请确认")请确认")End Subex0403Private Sub Command1_Click()Dim t As String, p As String t = Mid(Text1.Text, 5, 1) Select Case tCase "2"p = " 博士生 "Case "3"p = " 硕士生 "Case "4"p = " 本科生 "Case "5"p = " 专科生 "Case Elsep = " 无效学号 "End SelectText2.Text = Left(Text1.Text, 2) + "Text3.Text = pEnd Subex0404Private Sub Command1_Click()r = 0: g = 0: b = 0If Check1.Value = 1 Thenr = 255End IfIf Check2.Value = 1 Theng = 255End IfIf Check3.Value = 1 Thenb = 255End IfLabel1.BackColor = RGB(r, g, b)End SubPrivate Sub Command2_Click()EndEnd Subex0405Private Sub Form_Load()LabClk.Caption = "0"LabClk.Alignment = 1LabClk.BorderStyle = 1LabClk.FontSize = 22LabClk.FontName = " 黑体 "TimClk.Interval = 1000End SubPrivate Sub TimClk_Timer()LabClk.Caption = Val(LabClk.Caption) + 1End Sub ex0406 Private Sub Form_Load()Command1.Enabled = FalseCommand2.Enabled = FalseEnd SubPrivate Sub Text1_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single) If Text1.SelLength > 0 ThenCommand1.Enabled = TrueEnd IfEnd SubPrivate Sub Command1_Click()Command1.Enabled = TrueCommand2.Enabled = TrueEnd SubPrivate Sub Command2_Click()Text2.Text = Text1.SelTextCommand1.Enabled = FalseCommand2.Enabled = FalseEnd Sub ex0501 Private Sub Form_Load()Dim k As Integer, s As Integer, t As Integers = 0For k = 1 To 100 Step 2s = s + kNext kShowPrint "1 〜100范围内的奇数和：";sEnd Sub ex0502 Private Sub Form_Load()Dim s As SingleShows = 0For k = 1 To 200s = s + k / (1 + k * k)Next kPrint Int(s * 10 + 0.5) / 10End Sub ex0503 Private Sub Form_Load()Showk = 2Do While k < 101s = s + k * (k - 1)k = k + 2LoopPrint sEnd Subex0504Private Sub Form_Load()Dim k As Integer, a As Integer, b As IntegerDim c As Integer, n As IntegerShown = 0Print " 三位数的水仙花数是： "For k = 100 To 999a = Int(k / 100)b = Int((k - 100 * a) / 10)c = k Mod 10If a * a * a + b * b * b + c * c * c = k Then Print kn = n + 1End IfNext kPrint " 一共有 " & n & " 个水仙花数 "End Sub ex0505Private Sub Form_Load()ShowFor k = 1000 To 9999If k Mod 78 = 0 Thena = Int(k / 1000)b = Int(k / 100) - 10 * ac = Int(k / 10) - 100 * a - 10 * bd = k Mod 10If a = b And c = d ThenPrint kEnd IfEnd IfNext kEnd Subex0506Private Sub Command1_Click()Dim s As String, y As StringDim x As String, t As Strings = Text1.Text: y = ""For k = 1 To Len(s)x = Mid(s, k, 1)t = UCase(x)If t >= "A" And t <= "Z" Theny = y + xEnd IfNext kText2.Text = yEnd Subex0507Private Sub Command1_click()FontSize = 12ClsFor i = 0 To List1.ListCount -1If List1.Selected(i) Then 'Print List1.List(i)End IfNext iEnd Subex0508Private Sub Form_Load()ShowFor a = 1 To 9For b = 1 To 9For c = 1 To 9For d = 1 To 9x = a * 1000 + b * 100 + c y = b * 1000 + a * 100 + a z = d * 100 + d * 10 + a If x - y = z ThenPrint "A=" & a & ",B=" & b & ",C=" & c & ",D=" & d End IfNext dNext cNext bNext aEnd Sub ex0601Private Sub Command1_Click()Dim a(10) As Integer, min As Integer, pos As Integer RandomizeFor i = 1 To 10 a(i) = Int(Rnd * 90 + 10) Print a(i);Next iPrintmin = a(1)pos = 1For k = 2 To 10 If a(k) < min Then min = a(k) pos = k 10 + d 10 + c 显示 "按钮单击事件逐项判断 真时为选定Next kPrint " 最小数： "; min, " 位置： "; posEnd Sub ex0602Private Sub Form_Load()Dim a As Variant, b As VariantDim c(8) As Integera = Array(3, 4, 2, 1, 5, 7, 8, 11, 13)b = Array(10, 6, 12, 9, 13, 8, 8, 1, 16)For k = 0 To 8 c(k) = a(k) + b(k)Next kShowFor k = 0 To 8Print c(k)Next kEnd Sub ex0603 Private Sub Form_Load()Dim d() As IntegerDim k As Integer, t As Integer, m As IntegerDim h As Integer, n As Integern = Val(InputBox(" 请输入数组个数 n： "))ReDim d(n)ShowPrint " 处理前数据 :"RandomizeFor k = 1 To nd(k) = Int((101 * Rnd - 50))Print d(k);Next kPrintm = Int(n / 2)For k = 1 To m h = n - k + 1 t = d(h): d(h) = d(k): d(k) = t Next kPrint " 处理的结果 :"For k = 1 To nPrint d(k);Next kEnd Subex0604Private Sub Form_Load()Dim a(8, 8) As Integer, n As IntegerDim s As Long, i As Integer, j As IntegerShown = 8For i = 1 To nFor j = 1 To nx = Int(90 * Rnd + 10) ' 产生一个随机数a(i, j) = xNext jNext is = 0For i = 1 To nFor j = 1 To ns = s + a(i, j)Next jNext iPrint " 所有元素之和； "; sPrintFor i = 1 To ns = 0For j = 1 To ns = s + a(i, j)Next jPrint " 第 "; i; " 行元素之和； "; sNext iPrints = 0For i = 1 To ns = s + a(i, i)Next iPrint " 主对角线元素之和； "; sPrints = 0For i = 1 To nFor j = 1 To nIf i = 1 Or i = n Or j = 1 Or j = n Then s = s + a(i, j)End IfNext jNext iPrint " 所有靠边元素之和； "; sEnd Sub ex0605 Option Base 1Private Sub Form_Load()Dim a(8, 8) As Integer, n As IntegerDim max As Integer, r As Integer, c As Integer Show Randomizen = 8For i = 1 To nFor j = 1 To nx = Int(900 * Rnd + 100) 'a(i, j) = xPrint x;Next jPrintNext imax = 0: r = 1: c = 1PrintFor i = 1 To nFor j = 1 To nIf a(i, j) > max Then 'max = a(i, j): r = i: c = jEnd IfNext j, iPrint " 最大值为： "; maxPrint " 位于行： "; r, " 列： "; c End Sub ex0606 Dim n As IntegerPrivate Sub Cmd1_Click()n = n + 1If n = 3 Then n = 0Opt1(n).Value = True End SubPrivate Sub Form_Load()n = 1End Sub ex0607Private Sub Form_Load()Dim a(20) As IntegerRandomizea(1) = Int(10 + 90 * Rnd)k = 1Do While k < 20x = Int(10 + 90 * Rnd) 产生一个随机数判断有无更大数For j = 1 To kIf x = a(j) Then f = 1 Exit ForEnd IfNext jIf f = 0 Thenk = k + 1 a(k) = xEnd IfLoopShowFor j = 1 To 20Print a(j)Next jEnd Sub ex0701Private Sub Form_Click() Dim s As Long s = 0For k = 1 To 10 s = s + jc(k)Next kPrint sEnd SubFunction jc(n) As LongDim t As Longt = 1For k = 1 To nt = t * kNext kjc = tEnd Functionex0702Private Sub Form_Load()Dim a As Single, b As Single, c As Single Dim d As Single, m As Single, n As Single Showa = Val(InputBox(" 输入第 1 个数 "))b = Val(InputBox(" 输入第 2 个数 "))c = Val(InputBox(" 输入第 3 个数"))d = Val(InputBox(" 输入第 4 个数 "))m = max(a, b) 'n = max(c, d) 'Print " 最大数为： " & max(m, n) End SubFunction max(x, y) As SingleIf x > y Then max = xElsemax = y 求a、 b 中的较大数求c、 d 中的较大数求m、n 中的较大End Function ex0703Private Sub Command1_Click()Dim d(5) As Single, m As SingleFor k = 0 To 5d(k) = Val(Text1(k).Text) Next kCall Max(d(0), d(1), d(2), m)Call Max(m, d(3), d(4), m)Call Max(m, m, d(5), m) Text2.Text = mEnd Sub ex0704Private Sub Form_Load() Dim x As Long Showx = Val(InputBox(" 输入一个数 "))Print x; " 的位数为： "; fnws(x) End SubFunction fnws(x As Long) As Integer Dim n As Integer n = 1 Do While x \ 10 > 0n = n + 1x = x \ 10 Loop fnws = nEnd Function ex0705Private Sub C1_Click()Form1.HideEnd Sub ex0705APrivate Sub C2_Click()Form1.ShowEnd Sub ex0706 Dim n As IntegerPrivate Sub Command1_Click()usern = Trim(Text1.Text)passw = Trim(Text2.Text)If usern = "username" And passw = "password" Then Form1.HideForm2.ShowElsen = n + 1Text1.SetFocusIf n = 3 ThenForm1.HideForm3.ShowEnd IfEnd IfText1.Text = ""Text2.Text = ""End Subex0706APrivate Sub Command1_Click()Form2.HideForm1.ShowEnd Subex0906BPrivate Sub Command1_Click()Unload Form1Unload Form2Unload Form3EndEnd Sub ex0802 Private Sub Form_Load()Dim i As Integer, j As IntegerShowFor i = 1 To 12Print String(20 - i, 32); ' For j = 1 To 2 * i - 1 'If j <= i Then 'k = j 'Elsek = 2 * i - j 'End IfIf k > 9 Then k = k + 7 ' Print Chr(k + 48); 'Next jPrint ' 输出当前行左边的空格，分号表示下一输出项紧接输出输出2*i-1 个字符按左、右两边指定输出字符左边输出的字符右边输出的字符字母的ASCII 码比数字大7 以字符格式输出换行End SubDim t As Single, f As IntegerPrivate Sub Command1_Click()RandomizeIII! For k = 1 To 30If Mid(Text1.Text, k, 1) = Mid(Text2.Text, k, 1) Then c = c + 1End IfNext k Text2.Locked = True ' 禁止录入Text4.Text = Round(c / 30 * 100, 2) & "%" ' 显示准确率End IfEnd Subex0901Private Sub Command1_Click()Open " 静夜思 .txt" For Input As #1Do While Not EOF(1) '文件未结束时，循环Input #1, xList1.AddItem xLoopClose #1End Sub ex0902 产生原稿文”按钮x = Chr(Int(Rnd * 26) + 97) 's = s + xNext kText1.Text = s 'Text2.Text = ""Text2.Locked = False 'Text2.SetFocus 'Text3.Text = ""Text4.Text = ""f = 0 'End SubPrivate Sub Command2_Click()' EndEnd SubPrivate Sub Text2_KeyUp(KeyCode As Integer,Dim c As Integer, k As IntegerIf f = 0 Then' t = Timer' f = 1'1 End IfIf Len(Text2.Text) < 30 ThenText3.Text = Round(Timer - t, 1) & "Elsec = 0For k = 1 To 30 ' 随机产生小写字母 显示在文本框中 允许录入 设置焦点 第 1 次按键标记， 0 表示未按键 “结束”按钮 As Integer) 第 1 次按键时，开始计时 用t 保存第1次按键的时间 表示已按键和进入录入过程 秒 " ' 显示用户当前所用时间统计录入正确的字母个数Dim d(1 To 20) As IntegerPrivate Sub Command1_Click() '" 产生随机数 "For i = 1 To 20 d(i) = Int(1 + 99 * Rnd) List1.AddItem d(i)Next iEnd SubPrivate Sub Command2_Click() '" 保存 "Open "MyFile4.txt" For Output As #1For i = 1 To 20Write #1, d(i)Next iClose #1End SubPrivate Sub Command3_Click() '" 读出 "Open "MyFile4.txt" For Input As #1Do While Not EOF(1) Input #1, x List2.AddItem xLoopClose #1End SubPrivate Sub Command4_Click() '" 结束 "EndEnd Sub ex0903 Private Sub Form_Load()ShowFor k = 1 To 6第 7 章\ex070" & k & ".vbp"If Dir(fn) = "" ThenPrint Mid(fn, 4) & " 未编写！！ " ElsePrint Mid(fn, 4) & " 已编写！！ " End IfNext kEnd Subex0904Private Sub Form_Load()chedir = "C:\Documents and Settings\Lin\My Documents\fsodir" If Dir(chedir, 16) = "" ThenMkDir chedirEnd Ifchefile = "C:\Windows\notepad.exe"If Dir(chefile) <> "" ThenFileCopy chefile, chedir & "\mynotepad.exe"End IfMsgBox " 操作完毕！ "End Subex1002Private Sub A1_Click()Label1.ForeColor = vbRedEnd SubPrivate Sub A2_Click()Label1.ForeColor = vbBlueEnd SubPrivate Sub A3_Click()Label1.ForeColor = vbGreenEnd SubPrivate Sub Label1_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single) If Button = 2 ThenPopupMenu mun0End IfEnd Subex1003Private Sub Command1_Click()CommonDialog1.DialogTitle = " 选择文件 " CommonDialog1.Filter = " 文本文件 |*.txt"CommonDialog1.InitDir = "C:\"CommonDialog1.ShowOpenText1.Text = CommonDialog1.FileNameEnd SubPrivate Sub Command2_Click()Unload MeEndEnd Subex1101Private Sub calzc(x As Integer)Text2.Text = Round(2 * 3.14159 * x, 2)End SubPrivate Sub HV_Scroll()Dim r As Integer r = HV.ValueText1.Text = "=" & rCall calzc(r)End SubPrivate Sub Form_Load()HV.Max = 300End Subex1102Private Sub Form_Load()For k = 0 To 3 Image1(k).Stretch = TrueImage1(k).Picture = LoadPicture(" 箭头 " & k + 1 & ".bmp")Next kEnd SubPrivate Sub Image1_Click(Index As Integer) Picture1.ClsSelect Case IndexCase 0Picture1.Print "Case 1箭头向上 "Picture1.Print " Case 2Picture1.Print " Case 3 箭头向左 " 箭头向右 "Picture1.Print "End SelectEnd Sub箭头向下 "。

自测1程序代码Private Sub Command1_Click()Label1.FontSize = Label1.FontSize + 3 End SubPrivate Sub Command2_Click()Label1.FontBold = TrueEnd SubPrivate Sub Command3_Click()Label1.FontUnderline = TrueEnd SubPrivate Sub Command4_Click()Label1.FontSize = 10Label1.FontBold = FalseLabel1.FontUnderline = FalseEnd Sub初始窗口：单机放大之后窗口：单机下划线之后窗口：单击加粗之后窗口：单击还原之后窗口：自测2程序代码Private Sub Command1_Click()Label1 = "visual basic"Text1 = "程序设计题"End SubPrivate Sub Command2_Click()Text1 = "visual basic"Label1 = "程序设计题"End Sub初始窗口：单击显示之后窗口：单击交换之后的窗口：自测题3Private Sub Command1_Click()Label1.FontSize = Label1.FontSize * (0.5) End SubPrivate Sub Command2_Click()Label1.Top = Label1.Top + 30Label1.Width = Label1.Width + 20Label1.Alignment = 1End Sub初始窗口：单击缩小两倍之后的窗口：单击向右下角移动之后的窗口：自测题4程序代码Private Sub Command1_Click() Form1.Caption = "VB学习" Print "简单的VB程序设计" End SubPrivate Sub Command2_Click() ClsEnd SubPrivate Sub Command3_Click() EndEnd SubPrivate Sub Command3_Click() EndEnd Sub初始化窗口：单击显示之后的窗口：单击清除之后的窗口：单击退出之后的窗口：自测题5程序代码Private Sub Command1_Click()Text1.Text = ""Text2.Text = ""End SubPrivate Sub Command2_Click()Text3.Text = Val(Text1.Text) + Val(Text2.Text)End SubPrivate Sub Command3_Click()EndEnd Sub初始化窗口：单击运算之后窗口：单击清除之后的窗口：单击退出之后的窗口：自测练习1Private Sub Command1_Click()Dim a$a = Text1.TextLabel1.Caption = Left(a, 2)End SubPrivate Sub Command2_Click()a = Text1.TextLabel2.Caption = Right(a, 2)End SubPrivate Sub Command3_Click()Text1.Text = Label1.Caption & Label2.CaptionEnd Sub初始窗口界面输入字符串截取前两个字符截取后两个字符字符串连接自测练习2Private Sub Form_Click()Dim a%, b%, c%, d%, e%, f%, g%, h%, i%, j%, k%, l% a = 7349e = a Mod 10 '个位d = (a \ 10) Mod 10 '十位c = (a \ 100) Mod 10 '百位b = a \ 1000 '千位i = (e + 7) Mod 10 '个位h = (d + 7) Mod 10 '十位g = (c + 7) Mod 10 '百位f = (b + 7) Mod 10 '千位j = ii = f '交换后的个位f = j '交换后的千位k = hh = g '交换后的十位g = k '交换后的百位l = f * 1000 + g * 100 + h * 10 + iText1.Visible = FalsePrint "加密前的4位整数是7439"; (Chr(10)); "加密后的结果是"; l End Sub初始界面单击窗体运行后的界面自测练习1Private Sub Form_Click()Dim a%, b%, c%, d%, e%, f!a = Val(InputBox("输入第一个数", "输入一个数", 8))b = Val(InputBox("输入第一个数", "输入一个数", 7))c = a + bd = a - be = a * bf = a / bf = Fix(f * 100 + 0.5) / 100MsgBox "x+y=" & c & Chr(10) & "x-y=" & d & Chr(10) & "x*y=" & e & Chr(10) & "x/y=" & f, , "输出的结果"End Sub自测练习2Private Sub Form_Click()Dim a%, b%, c%, d%, e%, f!a = Val(InputBox("输入第一个数的值"))b = Val(InputBox("输入第二个数的值"))c = Val(InputBox("输入第三个数的值"))d = Val(InputBox("输入第四个数的值"))e = a + b + c + df = e / 4Print "和="; ePrint "平均值="; fEnd Sub自测练习3Private Sub Form_Click()Dim h%, f%, x%, y%h = Val(InputBox("输入总头数"))f = Val(InputBox("输入总脚数"))x = (4 * h - f) / 2y = (f - 2 * h) / 2Print "笼中鸡的头数为"; x; "只"Print "笼中兔的头数为"; y; "只"End Sub自测练习1：Private Sub Form_Click()Dim a%, b%, c%a = Val(InputBox("请输入第一条边", "边长"))b = Val(InputBox("请输入第二条边", "边长"))c = Val(InputBox("请输入第三条边", "边长"))If a + b > c And a + c > b And b + c > a ThenIf a * a + b * b = c * c Or a * a + c * c = b * b Or b * b = c * c = a * a ThenPrint "直角"ElseIf a = b And b = c ThenPrint "等边三角形"ElseIf a = b Or a = c Or b = c Then Print "等腰三角形"ElsePrint "一般三角形"End IfElsePrint "不是三角形"End IfEnd Sub不是三角形运行结果：初始窗口：输入三条边：运行结果：直角三角形运行结果：等边三角形运行结果如下：等腰三角形：一般三角形自测练习2：Private Sub Form_Click()Dim a%, b!a = Val(InputBox("请输入"))If a Mod 2 = 0 And a Mod 3 = 0 And a Mod 5 = 0 Then b = Sqr(a)Print a, bElseEndEnd IfEnd Sub初始化窗口：输入一个数：运行结果：自测练习3Private Sub Command1_Click()Dim a%, b%a = Val(Text1.Text)Select Case a > 0Case a < 20MsgBox "行李费为0.2元/kg", , "行李费"Case a >= 20 And a < 50MsgBox "行李费为0.3元/kg", , "行李费"Case a >= 50 And a < 100MsgBox "行李费为0.4元/kg", , "行李费"Case Elseb = 0.2 * 100 + (a - 100) * 0.5: MsgBox "行李费为" & b & "元", , "行李费"End SelectEnd Sub初始窗口：输入10：输入25：输入55：输入120：自测练习1Option Base 1Private Sub Form_Click()Dim i%, a(1 To 20) As Integera(1) = 1: a(2) = 1Print a(1);Print a(2);For i = 3 To 10a(i) = a(i - 1) + a(i - 2)Print a(i);Next iPrintFor i = 11 To 16a(i) = a(i - 1) + a(i - 2)Print a(i);Next iPrintFor i = 17 To 20a(i) = a(i - 1) + a(i - 2)Print a(i);Next i初始界面：运行结果界面：自测练习2Option Base 1Private Sub Form_Load()Form1.Width = 10000Form1.Height = 5000End SubPrivate Sub Command1_Click()Dim i%, j%, t%, a(1 To 4, 1 To 4) As Integer For i = 1 To 4For j = 1 To 4a(i, j) = Int(Rnd * 10) + 1Picture1.Print a(i, j);Next jPicture1.PrintNext iPicture3.Print "对角线的元素如下" For i = 1 To 4Picture3.Print a(i, i);Next iPicture3.PrintFor i = 1 To 4Picture3.Print a(i, 5 - i);Next iFor i = 1 To 4t = a(1, i)a(1, i) = a(4, i)a(4, i) = tNext iFor i = 1 To 4t = a(i, 2)a(i, 2) = a(i, 3)a(i, 3) = tNext iFor i = 1 To 4For j = 1 To 4Picture2.Print a(i, j); Next jPicture2.PrintNext iEnd Sub运行初始界面：运运行结果界面：自测练习1Sub itostr(a As Integer) Dim b%, c$a = Val(Text1.Text)While a >= 1c = Chr(a Mod 10 + 48) & c a = a \ 10WendText2.Text = c End SubPrivate Sub Command1_Click()Dim a As Integera = Val(Text1.Text)Call itostr(a)End Sub运行初始界面：运行结果界面：验证其他数字：自测练习2：Public Function area(n) As DoubleDim c#, d#, e#, s#n = Val(Text2.Text)c = (1 - 0) / nWhile e <= 1d = I * c:e = (I + 1) * cs = s + (Sin(d) + Sin(e)) * c / 2I = I + 1Wendarea = sEnd FunctionPrivate Sub Command1_Click()Dim s As DoubleCall area(n)Text1.Text = area(n)End Sub运行初始界面：运行结果：自测练习3Private Sub Form_click()n = Val(InputBox("请输入n的值"))x = Val(InputBox("请输入x的值"))Print "e的值="; es(n, x)End SubPrivate Function es(n, x)Dim a As Double, b As Double, c As Double, i As Integer a = 1: b = 1: c = 1For i = 1 To na = x * a:b = b * i:c = c + a / bNext ies = cEnd Function运行初始界面：输入数据：运行结果：自测练习4：For i = 1 To 4For j = i + 1 To 5If a(i) > a(j) Thent = a(i): a(i) = a(j): a(j) = t End IfNext jNext iFor i = 1 To 5Print a(i); " ";Next iFor i = 1 To 5If Y < a(i) Thent = a(i): a(i) = Y: Y = tEnd IfNext iFor i = 1 To 6a(6) = tNext iEnd FunctionPrivate Sub Command1_Click()Dim i#, a%(1 To 6), Y%Y = Val(InputBox("输入y的值", "输入数据")) Insertfun a%(), YPrintFor i = 1 To 6Print a(i); " ";Next iEnd Sub运行初始界面：插入数据：运行结果：自测练习1：Private Sub Command1_Click()If Ch1.Value = 1 ThenText1.Text = "报名参加羽毛球比赛"End IfIf Ch2.Value = 1 ThenText1.Text = "报名参加乒乓球比赛"End IfIf Ch1.Value = 1 And Ch2.Value = 1 ThenText1.Text = "报名参加羽毛球，乒乓球比赛" End IfEnd Sub运行初始界面：运行结果：自测练习4：Private Sub Form_Load()Label1.Alignment = 2Label1.FontSize = 24Label1.FontName = "黑体"Label1.ForeColor = &HFF&End SubPrivate Sub Option1_Click()Label1.Caption = "我是学生"End SubPrivate Sub Option2_Click()Label1.Caption = "我是教师"End SubPrivate Sub Option3_Click()Label1.Caption = "我是工人"End SubPrivate Sub Option4_Click()Label1.Caption = "我是农民"End Sub运行初始界面：运行结果：自测练习6：Private Sub Command1_Click()For i = 0 To Combo1.ListCount - 1If Combo1.List(i) = Combo1.Text Then Exit ForEnd IfNext iIf i > Combo1.ListCount - 1 Then Combo1.AddItem Combo1.TextEnd IfEnd SubPrivate Sub Command2_Click()If Combo1.ListIndex <> -1 Then Combo1.RemoveItem Combo1.ListIndex For i = 0 To Combo1.ListCount - 1If Combo1.List(i) = Combo1.Text Then Combo1.RemoveItem iEnd IfExit ForNext iEnd IfEnd SubPrivate Sub Command3_Click() Combo1.ClearEnd Sub运行初始界面:自测练习7：Private Sub Command1_Click() Timer1.Interval = 1Timer1.Enabled = TrueEnd SubPrivate Sub Form_Load() lbltemp1.FontSize = 20 lbltishi.FontSize = 20Label1.FontSize = 20Label2.FontSize = 20End SubPrivate Sub Timer1_Timer() VSbwd.Value = VSbwd.Value + 10 lbltem = VSbwd.ValueIf VSbwd >= 100 Thenlbltishi = "水开了"Timer1.Enabled = FalseEnd IfEnd Sub运行初始界面：运行结果：自测练习1：Private Sub myhelp_Click() frmAbout.ShowEnd SubPrivate Sub mymenu1_Click() Text1.Text = "百货大楼" End SubPrivate Sub mymenu2_Click() Text1.Text = "利客隆"End SubPrivate Sub mymenu3_Click() Text1.Text = "稻香村"End Sub运行初始界面：运行结果界面：自测练习2：Private Sub Dis_Click()Text1.Text = "菜单程序设计"Text1.FontSize = 20Text1.FontName = "黑体"End SubPrivate Sub Hid_Click()Text1.Visible = FalseEnd Sub运行初始界面：运行结果界面：自测练习3：Private Sub vbhelp_Click()r = MsgBox("帮助", , "程序设计题") End SubPrivate Sub Vbnew_Click()r = MsgBox("新建", , "程序设计题") End SubPrivate Sub vbopen_Click()r = MsgBox("打开", , "程序设计题") End SubPrivate Sub vbsave_Click()r = MsgBox("存盘", , "程序设计题")End Sub运行初始界面：运行结果：自测练习4：Private Sub Command1_Click()CommonDialog1.Action = 1List1.AddItem CommonDialog1.FileNameEnd Sub运行初始界面：运行结果：自测练习1：Private Sub Command1_Click()Dim a As String, n%, i%, j%Open "E:\Data.txt" For Input As #1 Input #1, an = Len(a)j = 0For i = 1 To nIf Mid(a, i, 1) = "%" Then j = j + 1 Next iClose #1Open "E:\Datares.txt" For Output As #1 Print #1, jClose #1End Sub运行初始界面：运行结果：自测练习3：Private Sub Form_Click()Dim x$Open "e:\txt2.txt" For Input As #1Do While Not EOF(1)Line Input #1, x$LoopClose #1Open "e:\txt1.txt" For Append As #1Print #1, x$Close #1End Sub运行初始界面：自测练习4Private Sub Form_load()Print " 26个英文字母"PrintPrint " a b c d e f g h i j k l m n o p q r s t u v w x y z"Print "字母个数分别为"End SubPrivate Sub Form_Click()Open "E:\Data.txt" For Output As #1文本$ = InputBox("请输入文本")n = UCase(文本$)Print #1, nClose #1Dim a%()Open "E:\Data.txt" For Output As #1 For i = 1 To Len(n)ReDim Preserve a(1 To 26)j = Asc(Mid(n, i, 1)) - 64a(j) = a(j) + 1Next iClose #1For j = LBound(a) To UBound(a)Print a(j);Next jEnd Sub。