C语言程序题库

上机试题（一）1.#include"stdio.h"#include"math.h"main(){int a,b,i,n,m;m=716699;n=(int)sqrt(m);i=2;while(a<n){i++;a=n-i;if(m%a==0) break;}printf("A is %d\n",a);}2.#include "stdio.h"int main(void){int i,Sum=0;for(i=100;i<999;i+=2){if((i/1000+((i/100)%10)+((i/10)%10)+(i%10))%15==0){#ifdef _DEBUGprintf("%d\t",i);#endifSum+=i;}}printf("三位数的偶数中，所有各位数字之和是15的倍数的数的和为%d",Sum); return 0;}上机试题（二）1.#include<stdio.h>#include<stdlib.h>int settle(){int i = 0, j = 0;int result = 0;for(i = 100; i < 1000; ++i){if((i%2 != 0) && (((i/100) + (i - 100*(i/100))/10 +(i - 100*(i/100) - ((i - 100*(i/100))/10)*10 ))%12 == 0)){result += i;}else{continue;}}return result;}int main(void){int sum = 0;sum = settle();printf("最后的结果为:\n");printf("%d\n", sum);return 0;}2.#include<stdio.h>void main(){int i,j,k,m=0;for(i=5;i<=65;i++)for(j=5;j<=35;j++)for(k=5;k<=17;k++){if(i+2*j+k*5==100)m+=1;}printf("%d",m);printf("\n");}上机试题（三）1.#include "stdio.h"int main(){int i;int k1, k2, k3, k4;long total = 0;for (i = 1000; i < 10000; i++){if (i % 2 == 0){continue;}k1 = i / 1000;k2 = (i / 100) % 10;;k3 = (i / 10) % 10;k4 = i % 10;if ((k1 + k2 + k3 + k4) % 25 == 0){total += i;}}printf("%d\n", total);return 0;}2.上机试题（四）1.#include "stdio.h"main(){int a;int e,f;int g,h;int i=0;int b,c,d;for(a=1;a<=9;a++){for(b=0;b<=9;b++){for(c=0;c<=9;c++){for(d=0;d<=9;d++){for(f=1;f<=9;f++){for(e=2;e<=9;e++){g=(10000*a+1000*b+100*c+10*d+f)*e;h=10000*f+1000*d+100*c+10*b+a;if(g==h)i++;}}}}}}printf("%d",i);}2.#include<stdio.h>void main(){int i,j,sum=1;for(i=200;i<=500;i++){ sum=1;for(j=2;j<i;j++)if( i%j==0) sum+=j;if(i==sum)printf("%d,",i);}}上机试题（五）1.#include<stdio.h>int prime(int m){int i,f=1;if(m==1)f=0;for(i=2;i<m;i++)if(m%i==0){f=0;break;}return f;}void main(){int m,s=0;for(m=101;m<=999;m=m+2){if(prime(m)&&prime(m%100)&&prime(m%10)&&(m/10%10)!=0)s++;}printf("%d",s);}2.#include<stdio.h>void main() {int j = 0;for(int i=1;i<5000;i++)if((5000%17)||(5000%23)) j++;printf("%i",j);}上机试题（六）1.#include <stdio.h>int main(){long int i;int p=0,e;for (e=2;e<10;e++){for (i=1000;i<10000;i++){if (i*e==i%1000*10+e)p+=i;}}printf("%d\n",p);return 0;}2.#include <stdio.h>int prime(long p){long i;for(i=3;i<p/2;i++,i++)if(p%i==0) return 0; //原为return 1;return 1; //原为return 0; }void main(){int n,count=0;int a=40,b=119;long p;for(n=a;n<=b;n++)p=n*(n+1)-1;if(prime(p)) count++;}if(count!=0)printf("[%d,%d]之间友数对的数目是%d\n",a,b,count);elseprintf("[%d,%d]之间没有友数对!\n",a,b);getchar();}上机试题（七）1.#include <stdio.h>int main(){float money=1.0f;//所分钱的总额int one,two,five;//分别是一分的两分五分的数量int num=0; //所能分方法的总数for(one=8;one<100;one++)for(two=8;two<50;two++)for(five=8;five<20;five++){float t=one*0.01+two*0.02+five*0.05;if(t==money){num++;printf("第%d种:%d一分\t%d两分\t%d三分\n",num,one,two,five);}}printf("共有%d种\n",num);system("pause");return 0;}2.#include "stdio.h"void main(){int x,y,z,u,i,s=0;for(i=1000;i<10000;i++) {x=i/1000;y=(i%1000)/100;z=(i%100)/10;u=i%10;if( (x+y+z+u)%24==0&&i%2==0)s++;printf("sum=%d\n",s);}上机试题（八）1.不准确#include<iostream>using namespace std;int main(){int a,b,c,i,sum=2;for(i=3;i<=10000000;i++){c=a+b;a=b;b=c;sum+=c;}cout<<sum<<endl;return 0;}2.#include <stdio.h>int main() {int i,a,b,count=0;for (i=0;i<50;i++){a=i%10; /*取个位*/b=i/10; /*取十位*/if ((a*b) > (a+b))count+=1;}printf("%d\n",count);return 0;}上机试题（九）1.#include <stdio.h>int fib_count(int n);int fib_iter(int i, int j, int n, int partial_count);int main(){int i = 10000000;printf("%d\n", fib_count(i));return 0;}int fib_count(int n){return fib_iter(1, 1, n, 0);}int fib_iter(int i, int j, int n, int partial_count) {if (i >= n) {return partial_count;} else {return fib_iter(j, i + j, n, partial_count + 1); }}2.#include<stdio.h>int main(){int i,n,m,count=0;printf("所有的回文数字如下：\n");for(i=1000;i<=9999;i++){n=i;m=0;while(n){m=m*10+n%10;n/=10;}if(m==i){printf("%d ",m);count++;}}printf("\n共%d个\n",count);getchar();return 0;}上机试题（十）1.#include<stdio.h>void main(){int i,j,s=0;for(i=10;i<100;i++)for(j=i+1;j<100;j++){int t[2],tt[2],c,d;t[0]=i%10;t[1]=i/10;tt[0]=j%10;tt[1]=j/10;c=t[0]+t[1];d=tt[0]+tt[1];if(i*d==j*c) s+=i+j;}printf("%d\n",s);}2.#include <stdio.h>int main(){int i,sum=0;for (i=1;i<=6000;i++){if ((i%3)==0 || (i%5)==0)sum+=1;}printf("%d\n",sum);return 0;}上机试题（十一）1.#include<stdio.h>void main(){int m;int s=0;for(m=2;m<=1000;m++){if((m*m)%10==m || (m*m)%100==m || (m*m)%1000==m) {s+=m;}}printf("%d\n",s);}2.#include<stdio.h>void main(){int i,j,k,m=0;for(i=5;i<=20;i++)for(j=5;j<=20;j++)for(k=5;k<=10;k++){if(i+2*j+k*5==50&&i+j+k==20)m+=1;}printf("%d",m);printf("\n");}上机试题（十二）1.2.#include "stdio.h"int main(void){int i,Sum=0;for(i=100;i<500;i++){if(i%5==4 && i%7==2)Sum+=i;}printf("%d",Sum);return 0;}上机试题（十三）1.#include<stdio.h>int main(){int a1,a2,a3,a4;int i;int sum=0;for(i=1001;i<10000;i+=2){a1=i/1000;a2=i/100%10;a3=i/10%10;if(a2*a3==0)continue;a4=i%10;if((a1*a2*a3*a4)%125==0)sum+=i;}printf("%d\n",sum);return 0;}2.#include"math.h"main(){int m,i,k,a=0,n=0;for(m=201;m<=1000;m=m+2)if(abc(m))if(abc(m+2)){printf("{%d,%d}",m,m+2);n++;}printf("%4d",n);}int abc(int a){int i;for(i=2;i<=a/2;i++)if(a%i==0)return(0);return(1);}上机试题（十四）1.#include <stdio.h>int main() {int i,a,b,sum=0;for (i=100;i<201;i++){a=i%100; /*取个位*/b=i/100; /*取百位*/if (a==b)sum+=i;printf("%d\n",sum);return 0;}2.#include<stdio.h>void main(){ int i,n=0,t,j;for(i=1;i<=100;i++){ t=0;for(j=1;j<=i;j++)if(i%j==0) t++; if(i%t==0) n++;}printf("%d\n",n);}上机试题（十五）1.#include<stdio.h>#include<math.h>int main(){int x,y,z;double t, min = 0;for (x = -55; x <= 55; x++){for (y = -55; y <= 55; y++){for (z = -55; z <= 55; z++){if ((x*x + y*y + z*z == 55*55) && (x < y) && (y < z)) {t = fabs(x) + fabs(y) + fabs(z);min=t;if (t <min ){min = t;}}}}printf("|x|+|y|+|z|最小值为 :%.f\n", min); return (0);}2.#include <stdio.h>int main(){int a[35];int i,sum;a[1]=0;a[2]=0;a[3]=1;sum=1;for(i=4;i<31;i++){a[i]=a[i-1]+a[i-2]+a[i-3];sum+=a[i];}printf("%d/n",sum);return 0;}上机试题（十六）1.#include <stdio.h>#include <math.h>int main() {int i,temp,S=0;for (i=1;i<30;i++){temp=(int)pow(2,i);S+=temp;if (S>2500){S-=temp;printf("%d\n",S);break;}}return 0;}2.上机试题（十七）1.#include <stdio.h>#include <math.h>void main(){int i, j, sum = 0, s;for (i = 3; i < 200; i += 2){s = sqrt((double)i);for (j = 2; j < s; ++j){if (i % j == 0)break;}if (j == s)sum += i;}printf("3到200之间的所有非偶数非素数的数之和为：%d\n", sum); }2.重复上机试题（十八）1.#include<stdio.h>int prime(int m){int i,f=1;if(m==1)f=0;for(i=2;i<m;i++)if(m%i==0){f=0;break;}return f;}void main(){int m,s=0;for(m=101;m<=999;m=m+2){if(prime(m)&&prime(m%100)&&prime(m%10)&&(m/10%10)!=0) s+=m;}printf("%d",s);}2. #include<stdio.h>main(){int i,sum=0;for (i=200;i<=1000;i++)if (i%4==3&&i%7==4&&i%9==4)sum=sum+i;printf("sum=%d\n",sum);}上机试题（十九）1.重复2.#include<stdio.h>int main(){int x,y;int count = 0;for (x = -100; x <= 100; x++){for (y = -50; y <= 50; y++){if ((9 * x) - (19 * y) == 1){count++;}}}printf("整数解个数为:%d\n", count);return (0);}上机试题（二十）1. #include<stdio.h>main(){int i,sum=0;for (i=200;i<=1000;i++)if (i%4==3&&i%7==4&&i%9==4)sum=sum+i;printf("sum=%d\n",sum);}2.#include <stdio.h>#include <math.h>void main(){ int i,n=0,j,k;for (i=1;i<=100;i++)for (j=i;j<=100;j++)for (k=j;k<=100;k++)if (fabs(1.0/(k*k)+1.0/(j*j)-1.0/(i*i))<1e-10){ n++;printf("%d,%d,%d\n",i,j,k); }printf("%d\n",n);}上机试题（二十一）1.#include<stdio.h>void main(){int a,b,c,d,i=0,s;for(s=1000;s<10000;s++){if(s%15==0){a=s/1000;b=(s-a*1000)/100;c=(s-a*1000-b*100)/10;d=s%10;if(a+d==b+c)i=i+1;}}printf("%d\n",i);}2.#include<stdio.h>void main(){int i;float f1=1,f2=1,sum=0,t;for(i=1;i<=30;i++){sum=sum+f1/f2;t=f2;f2=f2+f1;f1=t;}printf("%.2f\n",sum);}上机试题（二十二）1.#include<stdio.h>void fun(int n);int main(void){ int n;printf("n=");scanf("%d",&n);fun(n);}void fun(int n){ int i;double s=0;for(i=1;i<=n;i++) s+=1.0/((i+1)*i);printf("%lf\n",s);}2.#include<stdio.h>#include<stdlib.h>#include<math.h>int main(){int i,j,k,sum=0;float num1,num2;for(i=1;i<=100;i++)for(j=i+1;j<=100;j++){num1=sqrt(i+j);num2=sqrt(j-i);//num1-(int)num1==0意思是num1是整数，也就是说i+j是平方数，num2同理if(num1-(int)num1==0&&num2-(int)num2==0)sum+=i-j;}printf("%d\n",sum);}上机试题（二十三）1.#include <stdio.h>int satisfy(int n) {return (n / 1000 + n / 100 % 10 + n/10%10+n%10) % 25 == 0; }int main() {int sum = 0, i;for (i = 1000; i != 10000; i += 1)if (satisfy(i))sum += i;printf("%d\n", sum);return 0;}2.#include <stdio.h>#include <math.h>int main() {int i,temp,S=0;for (i=1;i<30;i++){temp=(int)pow(2,i);S+=temp;if (S>1500){S-=temp;printf("%d\n",S);break;}}return 0;}上机试题（二十四）1.#include<stdio.h>int prime(int m){int i,f=1;if(m==1)f=0;for(i=2;i<m;i++)if(m%i==0){f=0;break;}return f;}void main(){int m,s=0;for(m=101;m<=999;m=m+2){if(prime(m)&&prime(m%100)&&prime(m%10)&&(m/10%10)!=0)s+=m;}printf("%d",s);}2.#include <stdio.h>int main(){int i,count=0;for(i=1;i<=800;i++)if(i%3==0&&i%8==0)count++;printf("count=%d\n",count);return 0;}上机试题（二十五）1.#include <stdio.h>int main(){long int i;int p_max=0,e;for (e=2;e<10;e++){for (i=1000;i<10000;i++){if ((i*e==i%1000*10+e)&& i>p_max)p_max=i;}}printf("%d\n",p_max);return 0;}2.#include"stdio.h"main(){int i,j,k,t=0;for(i=5;i<=50;i++)for(j=1;j<50;j++)for(k=j+1;k<50;k++)if(i*i==j*j+k*k)t=t+1;printf("%d",t);}上机试题（二十六）1.#include<stdio.h>void main(){int i,j,k,m=0;for(i=11;i<=33;i++)for(j=11;j<=22;j++)for(k=11;k<=15;k++){if(i+2*j+k*5==100)m+=1;}printf("%d",m);printf("\n");}2.#include<math.h>main(){int n=0;int a,b,c,d,e,m;for(m=32;m<=99;m++){e=m*m;a=e/1000;b=(e%1000)/100;c=((e%1000)%100)/10;d=((e%1000)%100)%10;if(a+b==10&&c*d==18){if(e==m*m)n=n+1;}}printf("\n%d\n",n);}上机试题（二十七）1.#include<stdio.h>void main(){int m;for(m=2;m<=1000;m++){if((m*m)%10==m || (m*m)%100==m || (m*m)%1000==m) {s+=1;}}printf("%d\n",s);}2.#include "stdio.h"main(){int i,j,k,n;printf("'water flower'number is:");for(n=100;n<1000;n++){i=n/100;/*分解出百位*/j=n/10%10;/*分解出十位*/k=n%10;/*分解出个位*/if(i*100+j*10+k==i*i*i+j*j*j+k*k*k){printf("%-5d",n);}}printf("\n");}上机试题（二十八）1.#include<stdio.h>void main(){ int i,j,a,b,c,k;for ( i=800;i>=300;i-- ){ a=i; c=a%10; a/=10; b=a%10; a/=10;if ( (c+b)%10==a ){ for ( j=2,k=1;j<=i/2;j++ ) if ( i%j==0 ) { k=0; break; }if ( k ) { printf("%d\n",i); break; }}}}2.#include<stdio.h>void main(){int i;for(i=1;i<=500;i++){if(i%5==0 || i%9==0)s+=1.0/i;}printf("%.2f\n",s);}上机试题（二十九）1.#include "stdio.h"#include "conio.h"main(){int a=100,b,c,d=0;for(a=100;a<200;a++) {c=a%10;b=a/100;if(b==c){printf("%d是回文数\n",a);}d=d+a;if(a==200)break;}printf("所有回文数的和是：%d \n",d);getch();}2.#include <stdio.h>int main(){int y,x;int cnt = 0;for (x = 1; x < 19; x++){for (y = 1; y < 32; y++){if (100-5*x-3*y>0){cnt ++;printf ("%d %d %d\n",x,y,100-5*x-3*y);}}}printf("共有%d种", cnt);return 0;}上机试题（三十）1.#include <stdio.h>int main(){int a[35];int i,sum;a[1]=0;a[2]=0;a[3]=1;sum=1;for(i=4;i<31;i++){a[i]=a[i-1]+a[i-2]+a[i-3];sum+=a[i];}printf("%d/n",sum);return 0;}2.#include <stdio.h>void main(){int c=60;int sum=0;for(int a=1;a<60;a++){for(int b=1;b<a;b++){if((a+b>c)&&(b+c>a)&&(a+c>b)&&(a-b<c)&&(a-c<b)&&(b-c<a)&&(b-a<c)&&(c-a<b)&&(c-b <a)){if((a+b+c)%3==0){sum++;printf("%d,%d,%d\n",a,b,c);}}}}printf("这类三角形一共有%d个\n",sum);}上机试题（三十一）1.#include<stdio.h>#include<math.h>int isprim(int n){int i,k;k=(int)sqrt(n);for(i=2;i<=k;i++)if(n%i==0) return 0;if(i>k) return 1;}void main(){ int i,n,count=0,k;printf("请输入一个偶数:");scanf("%d",&n);k=n/2;for(i=1;i<=k;i++)if(isprim(i) && isprim(n-i)){count++;printf("%3d +%3d =%4d\n",i,n-i,n );}printf("%d\n",count);}2.#include <stdio.h>void main(){int i,n=0;int g,s,b,q;for (i=1000;i<10000;i++){g=i%10;q=i/1000;s=i%100/10;b=i/100%10;if(q*q+s*s==g*g*g+b*b*b)printf("%2d:%6d\n",++n,i);}}上机试题（三十二）1.#include<iostream>using namespace std;int main(){int num=0;//分子int bum=0;//分母int num_s=0;//拆开后的分子int bum_s=0;//拆开后的分母int sum=0;//总和for (num = 10;num<100;num++){for (bum = (num + 1);bum<100;bum++){num_s = num/10 + num%10;bum_s = bum/10 + bum%10;if ( (num*bum_s) == (bum*num_s)){// cout<<num<<"/"<<bum<<endl;sum = sum + num + bum;}}}cout<<sum;return 0;}2.#include<stdio.h>#include<stdlib.h>#include<math.h>int main(){int i,j,k,sum=0;float num1,num2;for(i=1;i<=100;i++)for(j=i+1;j<=100;j++){num1=sqrt(i+j);num2=sqrt(j-i);//num1-(int)num1==0意思是num1是整数，也就是说i+j是平方数，num2同理if(num1-(int)num1==0&&num2-(int)num2==0)sum+=i-j;}printf("%d\n",sum);}上机试题（三十三）1.#include<stdio.h>void main(){int N=30,i;long a[31],sum;a[0]=1;a[1]=2;a[2]=3;sum=a[0]+a[1]+a[2];for(i=3;i<=N;i++){a[i]=a[i-1]+2*a[i-1]-5*a[i-3];sum+=a[i];}printf("sum=%d\n",sum);}2.#include "stdio.h"int main(void){int i,j,Value,Sum=0;for(i=200;i<=500;i++){Value=0;for(j=1;j<i;j++){if(i%j==0) Value+=j;}if(Value==i){#ifdef _DEBUGprintf("%d\t",i);#endifSum+=i;}}printf("200-500以内的完数的和为%d",Sum);return 0;}上机试题（三十四）1.#include<conio.h>#include<stdio.h>int main(){int i,sum=0;for(i=1;i<=5000;i++){if(i%7==0) sum+=i;if(sum>1500){sum-=i;break;}}printf("sum = %d",sum);getch();return 1;}2.#include <stdio.h>int prime(long p){long i;for(i=3;i<p/2;i++,i++)if(p%i==0) return 0; //原为return 1;return 1; //原为return 0;}void main(){int n,count=0;int a=40,b=119;long p;for(n=a;n<=b;n++){p=n*(n+1)-1;if(prime(p)) count++;}if(count!=0)printf("[%d,%d]之间友数对的数目是%d\n",a,b,count);elseprintf("[%d,%d]之间没有友数对!\n",a,b);getchar();}上机试题（三十五）1.#include "stdio.h"void main(){int a,b,c,i=0;//a为百位，b为十位，c为个位int is_prime(int x);for(a=1;a<10;a++)//范围100到999，所以百位从1到9，十位，个位，从0到9for(b=0;b<10;b++)for(c=0;c<10;c++)if(((b+c)%10==a)&&is_prime(a*100+b*10+c))//满足题中条件时，计数器加1 i++;printf("i=%d\n",i);}int is_prime(int x)//判断是否是素数的函数，是素数，返回1，不是则返回0{int i;for(i=2;i<=x/2;i++)if(x%i==0)return 0;return 1;}2.#include<stdio.h>void main(){int N=30,i;long a[31],sum;a[0]=1;a[1]=2;a[2]=3;sum=a[0]+a[1]+a[2];for(i=3;i<=N;i++){a[i]=a[i-1]+2*a[i-1]-5*a[i-3];sum+=a[i];}printf("sum=%d\n",sum);}上机试题（三十六）1.#include <stdio.h>int main(){int a;//定义循环变量。