101道C语言编程题参考答案1000. 计算A+B 的问题49%(655/1347) 53% 01C语言基础1.#include<stdio.h>int main(){int a,b;scanf("%d%d",&a,&b);printf("%d",a+b);return 0;}1001. Hello World! 82%(693/848) 18% 01C语言基础2.#include<stdio.h>int main(){printf("hello world!");return 0;}1004 两个整数的值互换43%(530/1235) 58% 01C语言基础3.#include <stdio.h>int main(){int a,b,t;scanf("%d%d",&a,&b); t=a;a=b;b=t;printf("%d %d",a,b);}1068 计算三门课程总分和平均分41%(482/1190) 60% 01C 语言基础4.#include <stdio.h>int main(){float a,b,c,zf,pj;scanf("%f%f%f",&a,&b,&c);zf=a+b+c;pj=zf/3;printf("%.2f %.2f",zf,pj);}1002 鸡兔同笼问题51%(443/872) 50% 02顺序结构5.#include "stdio.h"int main(){int a,b,x,y;scanf("%d%d",&a,&b);x=2*a-b/2;y=b/2-a;printf("%d %d",x,y);}1005 输出一个自然数的百位十位和个位上的各个数字63%(437/695) 37% 02顺序结构6.#include <stdio.h>main(){int n;scanf("%d",&n);printf("%d %d %d",(n/100)%10,(n/10)%10,n%10);}1006 输出字符（A-F）代表的十六进制数所对应的十进制值84%(387/462) 16% 02顺序结构7.#include "stdio.h"int main(){char n;scanf("%c",&n);switch(n){case 'A':printf("10");break;case 'B':printf("11");break;case 'C':printf("12");break;case 'D':printf("13");break;case 'E':printf("14");break;case 'F':printf("15");break;}}1008 求华氏温度所对应的摄氏温度73%(407/556) 27% 02顺序结构8.#include<stdio.h>main(){float c,f;scanf("%f",&f);c=(5.0/9.0)*(f-32);printf("%.2f",c);}1009 已知斜边和一直角边计算三角形的另一直角边76%(415/547) 24% 02顺序结构9.#include<stdio.h>#include<math.h>main(){float xb,zb1,zb2;scanf("%f%f",&xb,&zb1);zb2=sqrt(xb*xb-zb1*zb1);printf("%.2f",zb2);}1069 已知三边计算三角形的面积64%(374/585) 36% 02顺序结构10.#include<stdio.h>#include<math.h>main(){double a,b,c,p,s;scanf("%lf%lf%lf",&a,&b,&c);p=(a+b+c)/2;s=sqrt(p*(p-a)*(p-b)*(p-c));printf("%.6lf",s);}1070 输出小写字母的ASCII码及对应大写字母63%(378/602) 37% 02顺序结构11.#include<stdio.h>main(){char n;int x;scanf("%c",&n);x='a'-'A';printf("%d %c",n,n-x);}1071 保留两位小数72%(335/467) 29% 02顺序结构12.#include "stdio.h" int main(){double n;scanf("%lf",&n);n=(double)(((int)((n+0.005)*100.00))/100.0);printf("%lf",n);}1003 判断输入的一个字符是否是小写字母76%(373/492) 24% 03分支结构13.#include "stdio.h"#include "stdlib.h"#include "ctype.h"void main(){char ch1;ch1=getchar();if(islower(ch1)!=0){printf("%d",ch1);}elseprintf("ERROR");}1007 简单字符加密变换A->F 72%(322/450) 28% 03分支结构14.#include<stdio.h>main(){char a;scanf("%c",&a);a=(a-'A'+5)%26+'A';printf("%c\n",a);}1010 判断输入的一个字符是什么类型的字符58%(337/583) 43% 03分支结构15.#include "stdio.h"#include "Ctype.h"void main(){char n;scanf("%c",&n);if(isalpha(n)!=0)printf("capital");else if(isdigit(n)!=0)printf("number");elseprintf("other");}1011 判断一个学生的成绩等级70%(375/536) 30% 03分支结构16. #include "stdio.h"void main(){int n;scanf("%d",&n);if(n<60)printf("failed");else if(n>=60&&n<80)printf("middle");elseprintf("excellent");}1012 输出数字(1-7)对应的英文星期名称的简写63%(337/536) 38% 03分支结构17.#include "stdio.h"void main(){int n; /*Mon, Tues, Wed, Thu, Fri, Sat, Sun*/scanf("%d",&n);switch(n){case 1: printf("Mon");break;case 2: printf("Tues");break;case 3: printf("Wed");break;case 4: printf("Thu");break;case 5: printf("Fri");break;case 6: printf("Sat");break;case 7: printf("Sun");break;}}1013 给定三个边长的值判断是否能够构成三角形53%(347/650) 47% 03分支结构18.#include "stdio.h"#include<math.h>void main(){int a,b,c;scanf("%d%d%d",&a,&b,&c);if(abs(a-b)<c&&a+b>c)printf("YES");elseprintf("NO");}1014 将输入的三个数按从小到大的顺序输出67%(308/460) 33% 03分支结构19.#include<stdio.h>int main(){int x,y,z,t;scanf("%d%d%d",&x,&y,&z); if(x>y){t=x;x=y;y=t;}if(y>z){t=z;z=y;}if(x<t)y=t;else{y=x;x=t;}printf("%d %d %d",x,y,z);}1015 编程计算一个分段函数75%(319/428) 25% 03分支结构20.#include "stdio.h"void main(){float x;scanf("%f",&x);if (x<1.0)printf("%.2f",x);else if (x>=1.0&&x<10.0)printf("%.2f",2*x-1);elseprintf("%.2f",3*x-11);}1073 这个数能被3整除吗？68%(374/546) 32% 03分支结构21.#include "stdio.h"void main(){float x;scanf("%f",&x);if (x<1.0)printf("%.2f",x);else if (x>=1.0&&x<10.0)printf("%.2f",2*x-1);elseprintf("%.2f",3*x-11);}1074 这个月有多少天？54%(290/542) 46% 03分支结构22.#include <stdio.h>main(){int y,m;scanf("%d %d",&y,&m);switch(m){case 1:case 3:case 5:case 7:case 8:case 10:case 12:printf("31");break;case 4:case 6:case 9:case 11:printf("30");break;case 2:if(y%100 == 0 && y%400 ==0)printf("29");else if(y%100 != 0 &&y%4 ==0)printf("29");elseprintf("28");break;}}1075 模拟加减乘除计算器76%(274/361) 24% 03分支结构23.#include "stdio.h"void main(){float a,b;char p;scanf("%f%c%f",&a,&p,&b);switch(p){case '+': printf("%.6f",a+b);break;case '-': printf("%.6f",a-b);break;case '*': printf("%.6f",a*b);break;case '/': printf("%.6f",a/b);break;}}1076 输出三个数中的最大数和最小数77%(298/386) 23% 03分支结构24.#include<stdio.h>main(){int a,b,c;scanf("%d%d%d",&a,&b,&c);if(a>=b&&b>=c){printf("%d %d",a,c);}if(a>=c&&c>=b){printf("%d %d",a,b);}if(b>=a&&a>=c){printf("%d %d",b,c);}if(b>=c&&c>=a){printf("%d %d",b,a);}if(c>=a&&a>=b){printf("%d %d",c,b);}if(c>=b&&b>=a){printf("%d %d",c,a);}}1077 个人所得税问题（1）71%(275/389) 30% 03分支结构25.#include<stdio.h>main(){float s,r,t;scanf("%f",&s);if(s<=850)r=0;else if(s>850&&s<=1350)r=5;else if(s>1350&&s<=2850)r=10;else if(s>2850&&s<=5850)r=15;else if(s>5850)r=20;t=r*(s-850)/100;printf("%.2f\n",t);}1078 出租车收费问题66%(226/340) 33% 03分支结构26.#include<stdio.h>main(){int b;float a;double t,s;scanf("%f %d",&a,&b);t=a+b/5.0;if(t<=3)s=10;else if(t>=3&&t<=10)s=10+((double)t-3.0)*2;else if(t>10)s=10+14+(t-10)*3.0;printf("%.0f",s);}1079 学生综合测评问题49%(259/525) 51% 03分支结构27.#include<stdio.h>main(){int a,b;scanf("%d",&a);switch(a){case 0:b=0;break;case 1:b=1;break;case 2:case 3:b=2;break;case 4:case 5:case 6:case 7:b=a;break;case 8:b=8;break;case 9:b=8;break;case 10:b=8;break;default :b=10;break;}printf("%d",b);}1080 个人所得税问题（2）76%(247/327) 25% 03分支结构28.#include<stdio.h>main(){float s,r,t;scanf("%f",&s);if(s<=850){r=0;t=r*(s-850)/100;}else if(s>850&&s<=1350){r=5;t=r*(s-850)/100;}else if(s>1350&&s<=2850){r=10;t=r*(s-1350)/100+25;}else if(s>2850&&s<=5850){r=15;t=r*(s-2850)/100+175;}else if(s>5850){r=20;t=r*(s-5850)/100+625;}printf("%.2f\n",t);}1081 他（她）的实足年龄是...... 55%(243/438) 44% 03分支结构29.#include<stdio.h>main(){int y1,y2,m1,m2,d1,d2,s;scanf("%d %d %d\n%d %d %d\n",&y1,&m1,&d1,&y2,&m2, &d2);s=y2-y1;if(m1>m2)s--;else if(m1==m2&&d1>d2)s--;printf("%d",s);}1016 将一个小整数逆序输出70%(298/425) 30% 04循环结构30.#include "stdio.h"#include "math.h"void main(){int i,j,n,t,k;int s=0,ipow=1,jpow=1;scanf("%d",&n);for(i=1;;i++){ipow=ipow*10;if(n>=ipow);else break;}for(j=0;j<=i;j++){int fpow=1;t=(n/jpow)%10;jpow=jpow*10;for(k=1;k<=i-j-1;k++){fpow=fpow*10;}s=s+t*fpow;}printf("%d",s);}1017 计算一个数字的各位数字之和70%(328/466) 30% 04循环结构31.#include<stdio.h>main(){int n,m=0;scanf("%d",&n);while(n){m+=n%10;n/=10;}printf("%d",m);}1018 求两个数之间有多少个数的各位上数字之和为7 51%(209/412) 49% 04循环结构32.#include<stdio.h>main(){long int a,b,t,k,s,i;long sum=0;scanf("%d %d",&a,&b);if(a<b){for(i=a;i<=b;i++){k=i;s=0;do{t=k%10;s=s+t;k=k/10;}while(k>0);if(s==7)sum=sum+1;}}if(a>b){for(i=b;i<=a;i++){k=i;s=0;do{t=k%10;s=s+t;k=k/10;}while(k>0);if(s==7)sum=sum+1;}}printf("%ld",sum);}1019 判断一个整数是否是素数62%(273/440) 38% 04循环结构33.#include "stdio.h"#include<math.h>void main(){int i,s=0,n;scanf("%d",&n);for(i=1;i<=sqrt(n);i++){if(n%i==0)s++;}if(s==1)printf("YES");elseprintf("NO");}1020 输出n - m 之间的所有素数80%(226/282) 20% 04循环结构34.#include "stdio.h"void main() {int n,m;int i,j;scanf("%d %d",&n,&m);for(i=n;i<=m;i++){for(j=2;j<i;j++){if(i%j==0)break;}if(j>=i)printf("%d\n",i);}}1021 1到m之间有哪些数能被7或被11整除？82%(263/322) 18% 04循环结构35.#include "stdio.h"void main(){int i,n;scanf("%d",&n);for(i=1;i<=n;i++){if(i%7==0||i%11==0)printf("%d\n",i);}}1022 编程计算1+3+5+7+... 的值68%(321/472) 32% 04循环结构36.#include "stdio.h"int main(){int s=0,i,n;scanf("%d",&n);for(i=1;i<=n;++i)s=s+2*i-1;printf("%d",s);}1023 计算 1 ！+2 ！+3 ！+… 前n 项的和66%(307/466) 34% 04循环结构37. #include "stdio.h"int fun(int);int main(){int i=1,n;long s=0;scanf("%d",&n);do{s=s+fun(i);i++;}while(i<=n);printf("%d",s);}int fun(n){if(n==1)return 1;elsereturn fun(n-1)*n;}1024 输出100-999之间的所有水仙花数70%(244/347) 30% 04循环结构38.#include "stdio.h"void main(){int a,b,c,i;int s;for(i=100;i<=999;i++){a=i/100;b=(i/10)%10;c=i%10;s=a*a*a+b*b*b+c*c*c;if(s==i)printf("%d\n",i);}return 0;}1025 求输出的数既是完全平方数又有两位相同的数76%(188/248) 24% 04循环结构39.#include "stdio.h"void main(){int i,j;int a,b,c;for(i=100;i<=999;i++)for(j=10;j<=33;j++){a=i/100;b=(i/10)%10;c=i%10;if(i==(j*j)&&(a==b||a==c||b==c))printf("%d\n",i);}}1026 判断一个数是否是完数85%(199/233) 14% 04循环结构40.#include "stdio.h"void main(){int i=1,s=0;int n;scanf("%d",&n);while(i<=n/2){if(n%i==0)s=s+i;i++;}if(s==n)printf("YES");elseprintf("NO");}1027 求1+22+333+ … 前n 项的和53%(216/407) 47% 04循环结构41.#include <stdio.h>main(){int i,n,t,sum=0,a=0;scanf("%d",&n);for(i=1;i<=n;i++){a=a*10+1;t=a*i;sum=sum+t;}printf("%d",sum);}1028 求sum=b+bb+bbb+bbbb+... 70%(220/315) 31% 04循环结构42.#include<stdio.h>main(){int m,b,i,t,a=0,sum=0;scanf("%d%d",&b,&m);for(i=1;i<=m;i++){a=a*10+1;t=b*a;sum=sum+t;}printf("%d",sum);}1029 求1-1/2+1/3-1/4+1/5-1/6+ … 的前n项的值83%(229/277) 18% 04循环结构43.#include "stdio.h"int main(){int i=2,detax;float s=1,t=1;scanf("%d",&detax);do{s=s-t/i;i++;t=-t;}while(i<=detax);printf("%.6f",s);}1030 求1-1/(2*2)+1/(3*3)-1/(4*4)+1/(5*5)-1/(6*6)+ … 前n 项值92%(208/226) 8% 04循环结构44.#include "stdio.h"int main(){int i=2;float s=1,t=1,n;scanf("%f",&n);do{s=s-t/(i*i);i++;t=-t;}while(i<=n);printf("%.6f",s);}1031 编程计算∏的近似值59%(169/285) 41% 04循环结构45.#include "stdio.h"int main(){int i=2;double s=1,t=1,detax;scanf("%lf",&detax);do{s=s-t/(2*i-1);i++;t=-t;}while(1.0/(2*i-1)>=detax);printf("%lf",4*s);}1032 编程计算1+x/2+2*x*x/3+ 3*x*x*x/5+ 5*x*x*x*x/8+ …… 78%(120/153) 22% 04循环结构46.#include "stdio.h"int f(int);void main(){int i;float x,t=1,s=1;scanf("%f",&x);for(i=1;;i++){t=t*x;s=s+f(i)*t/f(i+1);if(f(i)*t/f(i+1)<0.000001){printf("%.6f",s);break;}}} int f(n){if(n==1)return 1;else if(n==2)return 2;elsereturn f(n-1)+f(n-2);}1033 打印图形72%(162/226) 29% 04循环结构47.#include "stdio.h"void main(){int i,j,k,n;scanf("%d",&n);for(i=1;i<=n;i++){for(j=n-i;j<n-1;j++)printf(" ");if(j>=n-1)for(k=1;k<=2*(n-i)+1;k++)printf("*");if(k>2*(n-i)+1)printf("\n");}}1034 求解中国剩余定理的问题81%(167/205) 18% 04循环结构48.#include "stdio.h"void main(){int i,n;scanf("%d",&n);for(i=1;i<=n;i++){if(i%3==1&&i%5==2&&i%7==3)printf("%d\n",i);}}1035 哪些数加上n 后是完全平方数且加上m 后也是完全平方数66%(156/235) 34% 04循环结构49.#include "stdio.h"#include<math.h>void main(){int i;int n,m;double nsqrt,msqrt;scanf("%d %d",&n,&m);for(i=1;i<=100000;i++){nsqrt=sqrt(i+n);msqrt=sqrt(i+m);if(nsqrt-(int)sqrt(i+n)==0&&msqrt-(int)sqrt(i+m)==0)printf("%d\n",i);}}1084 求解不定方程的非负整数的根94%(154/164) 6% 04循环结构50.#include "stdio.h"void main(){int x,y,z;int i;for(i=4;i<=100;i=i+4){x=i;if((300+3*x)%4==0){z=(300+3*x)/4;y=(100-7*x)/4;}if(x>0&&y>0&&z>0)printf("%d %d %d\n",x,y,z);}}1085 百钱百鸡问题96%(174/182) 4% 04循环结构51.#include "stdio.h"void main(){int n,m;int i;scanf("%d %d",&n,&m);for(i=1;;i++){if((n+i)==2*(m+i)){printf("%d",i);}}}1086 多少年后父亲的年龄是儿子的年龄的2倍77%(185/241) 23% 04循环结构52.#include "stdio.h"void main(){int n,m;int i;scanf("%d %d",&n,&m);for(i=1;i>0;i++){if((n+i)==2*(m+i)){printf("%d",i);break;}}}1087 特殊的四位数96%(171/178) 4% 04循环结构53.#include <stdio.h>main(){int a,b,c,d,i,k,f;for(i=1000;i<=9999;i++){ a=i%10;b=(i/10)%10;c=(i/100)%10;d=i/1000;f=a*1000+b*100+c*10+d;for(k=2;k<=9;k++){if(i*k==f&&a!=0)printf("%d\n",i);}}}1082 计算F(G(x))的值76%(155/204) 24% 05函数54.#include "stdio.h"#include<math.h>void main(){double x;double g,f;scanf("%lf",&x);g=2*x+1;f=(g+1)*(g+1);printf("%.2lf",f);}1083 哪些数是回文数？74%(111/150) 26% 05函数55.#include<stdio.h>int f(int y){int s=0;do{s=s*10+y%10;y=y/10;}while(y>0);return s;}main(){int m,n,i;scanf("%d%d",&m,&n);for(i=m;i<=n;i++){if(i==f(i))printf("%d\n",i);}}1088 编写阶乘函数求表达式的值91%(144/158) 8% 05函数56.#include "stdio.h"int fun(int);void main(){int n,m;double s;scanf("%d %d",&n,&m);s=(double)fun(m)/(fun(n)*fun(n-m));printf("%.6f",s);}int fun(x){if(x==1)return 1;elsereturn x*fun(x-1);}1089 编程计算两个数的最大公约数92%(131/143) 9% 05函数57.#include "stdio.h"void main(){int t,i;int m, n;scanf("%d %d",&m,&n);for(i=1; ;i++){if(m%n==0){printf("%d",n);break;}else{t=m%n;m=n;n=t;}}}1090 计算一个数的所有质因数64%(121/189) 37% 05函数58.#include "stdio.h" void main(){int k,l;int j;scanf("%d",&k);for(j=2;j<k;j++){if(k%j==0){for(l=2;l<j;l++)if(j%l==0) break;}if(l>=j)printf("%d\n",j);}}1095 求递归函数的值96%(114/119) 4% 05函数59.#include "stdio.h"int f(int);void main(){int x;scanf("%d",&x);printf("%d",f(x));}int f(n){if(n==1)return 10;elsereturn f(n-1)+2;}1036 将一维数组中的数据按逆序重新存放81%(134/166) 20% 06数组和指针60.#include "stdio.h"void main(){int a[20];int i,j,n;scanf("%d\n",&n);for(i=0;i<n;i++){scanf("%d",&a[i]);}for(j=n-1;j>=0;j--){printf("%d ",a[j]);}}1037 统计一组数据中正数、负数和零的个数84%(127/152) 17% 06数组和指针61.#include<stdio.h>main(){int n,a[20];int i,j,k,l;int p=0,b=0,c=0;scanf("%d\n",&n);for(i=0;i<n;i++)scanf("%d",&a[i]);for(j=0;j<n;j++){if(a[j]>0)p++;}for(k=0;k<n;k++){if(a[k]<0)b++;}for(l=0;l<n;l++){if(a[l]==0)c++;}printf("%d %d %d",p,b,c);}1038 计算一组数据的平均值92%(132/144) 9% 06数组和指针62.#include "stdio.h"void main(){float a[20];int i,j,n;float s=0,pj;scanf("%d\n",&n);for(i=0;i<n;i++){scanf("%f",&a[i]);}for(j=0;j<n;j++){s=s+a[j];}pj=s/n;printf("%.6f",pj);}1039 统计一个串中字母、数字和其它字符的个数66%(104/158) 31% 06数组和指针63.#include<stdio.h>main(){char c[1000];int i,n=0,z=0,q=0;gets(c);for(i=0;c[i];i++){if(c[i]>='0'&&c[i]<='9')n=n+1;else if((c[i]>='A'&&c[i]<='Z')||(c[i]>='a'&&c[i]<='z')) z=z+1;else q++;}printf("%d %d %d",z,n,q);}1040 判断一组数据是否是从小到大的序列76%(100/131) 24% 06数组和指针64.#include "stdio.h"void main(){int ch[20];int i,j=0,n;scanf("%d",&n);for(i=0;i<n;i++)scanf("%d",&ch[i]);while(n-j-1){if(ch[j]>=ch[j+1]) break;j++;}if(j>=n-1)printf("YES");elseprintf("NO");}1041 判断一个字符串是否是回文78%(103/132) 22% 06数组和指针65.#include <stdio.h>#include <string.h>void main(){char ch[50];int i, n;scanf("%s",ch);n=strlen(ch);for(i=0;i<n;i++){if(ch[i]!=ch[n-i-1]) break;}if(i>=n)printf("YES");elseprintf("NO");}1042 数组中有这个数吗？76%(94/123) 24% 06数组和指针66.#include "stdio.h"void main(){int a[3][4]={{1,2,3},{4,5,6},{7,8,9}};int i,j,n;scanf("%d",&n);for(i=0;i<=2;i++){for(j=0;j<=2;j++){if(n==(3*i+j+1)){printf("%d %d",i,j);}}}if(n>=10)printf("-1");}1043 求出二维数组中最大元素的值及其位置79%(97/123) 20% 06数组和指针67.#include "stdio.h"void main(){int ch[3][4];int i,j,n,m;int max;for(i=0 ; i<3 ; i++)for(j=0 ; j<4 ; j++)scanf("%d",&ch[i][j]);max=ch[0][0];for(i=0 ; i<3 ; i++)for(j=0 ; j<4 ; j++)if(ch[i][j]>=max){max=ch[i][j];n=i;m=j;} printf("%d %d %d",max,n,m);}1044 交换二维数组中最大元素和最小元素80%(87/109) 20% 06数组和指针68.#include "stdio.h"void main(){int ch[3][4];int i,j,n,m;int t;int x1,y1,x2,y2;int max,min;for(i=0 ; i<3 ; i++)for(j=0 ; j<4 ; j++)scanf("%d",&ch[i][j]);max=ch[0][0];for(i=0 ; i<3 ; i++)for(j=0 ; j<4 ; j++)if(ch[i][j]>=max){max=ch[i][j];x1=i;y1=j;}min=ch[0][0];for(n=0 ; n<3 ; n++)for(m=0 ; m<4 ; m++)if(ch[n][m]<=min){min=ch[n][m];x2=n;y2=m;}t=ch[x1][y1];ch[x1][y1]=ch[x2][y2];ch[x2][y2]=t;for(i=0 ; i<3 ; i++){for(j=0 ; j<4 ; j++)printf("%d ",ch[i][j]);printf("\n");}}1045 统计字符串中单词数量60%(85/142) 41% 06数组和指针69.#include<stdio.h> #include<string.h>#include<Ctype.h> int sum(char []); main(){char s[101];gets(s);printf("%d",sum(s)); }int sum(char s[]){int i=0,j=0,n=0; char temp[20]={'\0'}; do{if(isalpha(s[i]))temp[j++]=s[i]; else{temp[j]='\0';if(strlen(temp)>0)n=n+1;j=0;}}while(s[i++]); return n;}1046 将一个字符串中所有字母转成大写87%(92/106) 13% 06数组和指针70.#include<stdio.h>#include<string.h>main(){int i;char a[101];gets(a);for(i=0;a[i];i++){if(a[i]>='a'&&a[i]<='z')a[i]-=32;}puts(a);}1047 删除字符串中的前导*号83%(90/109) 18% 06数组和指针71.#include "stdio.h"#include <string.h>#include <Ctype.h>void main(){char s[100],a[100]={0};int j=0,i=0,k=0;gets(s);while(s[i++]=='*')k++;for(i=k;i<100;i++)a[j++]=s[i];puts(a);}1048 删除字符串的*号后缀76%(86/113) 15% 06数组和指针72.#include "stdio.h"#include <string.h>#include <Ctype.h>void main(){char s[100],a[100]={0};int j=0,i=0,k=0;gets(s);while(s[i++]!='\0')k++;while(s[k-1]=='*'){k--;}for(i=0;i<k;i++)a[j++]=s[i];puts(a);}1049 删除字符串中所有的*号87%(92/106) 13% 06数组和指针73.#include "stdio.h"#include <string.h>#include <Ctype.h>void main(){char s[100],a[100]={0};int j=0,i=0;gets(s);do{if(isalpha(s[i]))a[j++]=s[i];}while(s[i++]);puts(a); }1094 求矩阵的两对角线上的元素之和78%(66/85) 23% 06数组和指针74.#include "stdio.h"void main(){int a[10][10],n;int i,j,s1=0,s2=0,s;scanf("%d",&n);for(i=0;i<n;i++)for(j=0;j<n;j++)scanf("%d",&a[i][j]);for(i=0;i<n;i++)for(j=0;j<n;j++){if(i==j)s1=s1+a[i][j];if( (i+j) == n-1&&i!=j)s2=s2+a[i][j];}s=s1+s2;printf("%d",s);}1097 结构体：按成绩排序77%(43/56) 22% 07结构体75.#include "stdio.h"struct student{char number[11];char name[9];int chengji;};int main(){int i,j;int n;struct student zg[100];struct student q;scanf("%d",&n);for(i=0;i<n;i++){scanf("%s%s%d",zg[i].number,zg[i].name,&zg[i].chengji); }for(i=0;i<n-1;i++)for(j=i+1;j<n;j++){if(zg[i].chengji>zg[j].chengji){q=zg[i];zg[i]=zg[j];zg[j]=q;}}for(i=0;i<n;i++){printf("%s %s %d\n",zg[i].number,zg[i].name,zg[i].chengji);}}1098 结构体：求最高分和最低分83%(40/48) 17% 07结构体76.#include "stdio.h"struct student{char number[11];char name[9];int chengji;};int main(){int i,j,t,s;int n;int maxmin;struct student zg[100];scanf("%d",&n);for(i=0;i<n;i++){scanf("%s%s%d",zg[i].number,zg[i].name,&zg[i].chengji);}maxmin=zg[0].chengji;for(i=1;i<n;i++)if(maxmin<zg[i].chengji){maxmin=zg[i].chengji;t=i;}for(j=1;j<n;j++)if(maxmin>zg[j].chengji){maxmin=zg[j].chengji;s=j;}printf("%s %s %d\n",zg[t].number,zg[t].name,zg[t].chengji);printf("%s %s %d",zg[s].number,zg[s].name,zg[s].chengji); }1099 结构体：计算学生平均分74%(39/53) 27% 07结构体77.#include<stdio.h>struct student{char num[10];char name[20];float fs1,fs2; }main(){struct student stu[20];int n,i;scanf("%d",&n);for(i=0;i<n;i++){scanf("%s",&stu[i].num);scanf("%s",&stu[i].name);scanf("%f",&stu[i].fs1);scanf("%f",&stu[i].fs2);}for(i=0;i<n;i++)stu[i].fs1=(stu[i].fs1+stu[i].fs2)/2;for(i=0;i<n;i++)printf("%s %s %0.1f\n",stu[i].num,stu[i].name,stu[i].fs1); }1100 结构体：在线编程评测系统的排名57%(34/60) 47% 07结构体78.#include<stdio.h>int fun(struct student*p,struct student*q);struct student{char num[20];int men;int fen;}main(){struct student stu[20];struct student;int n,i,j;scanf("%d",&n);for(i=0;i<n;i++){scanf("%s %d %d",&stu[i].num,&stu[i].men,&stu[i].fen); }for(i=0;i<n;i++){for(j=i+1;j<n;j++){if(stu[i].men<stu[j].men)fun(&stu[i],&stu[j]);if(stu[i].men==stu[j].men&&stu[i].fen>stu[j].fen)fun(&stu[i],&stu[j]);}}for(i=0;i<n;i++)printf("%d %s %d %d\n",i+1,stu[i].num,stu[i].men,stu[i].fen); }int fun(struct student*p,struct student*q){struct student a;a=*p;*p=*q;*q=a;return 0;}1050 [初级竞赛题] 亲和数82%(89/109) 19% 09综合应用79.#include<stdio.h>main(){int a,b,i,j,d,sum=0,sun=0;scanf("%d %d",&a,&b);for(i=1;i<a;i++){d=a/i;if(d*i==a){sum=sum+i;}}for(j=1;j<b;j++){d=b/j;if(d*j==b){sun=sun+j;}}if(sum==b&&sun==a)printf("YES\n");elseprintf("NO\n");}1051 [初级竞赛题] 陶陶摘苹果81%(70/86) 19% 09综合应用80.#include<stdio.h>main(){int a[10];int i,j,n=0;for(i=0;i<10;i++){scanf("%d",&a[i]);}scanf("%d",&j);for(i=0;i<10;i++){if(a[i]<=j+30){n+=1;}}printf("%d\n",n);}1052 [初级竞赛题] Lucky Number 55%(36/66) 46% 09综合应用81.#include<stdio.h>main(){int a[1000];int i,j,n;int k=-1,s=1001;scanf("%d",&n);for(i=0;i<n;i++)scanf("%d",&a[i]);for(i=0;i<n;i++){for(j=0;j<n;j++)if(a[i]==a[j]&&i!=j){break;}if (j==n){if(a[i]<s)。
