C语言程序设计编写程序

#include <stdio.h>
int main()
{
    int i,j,is,count = 0,sum = 0;
    printf("100以内的素数有：\n");
    for(i = 2;i <= 100;i++){
        is = 1;
        for(j = 2;j*j <= i;j++){
            if(i % j == 0){
                is = 0;
                break;
            }
        }
        if(is == 1){
            printf("%d ",i);
            sum += i;
            count ++;
            if(count % 5 == 0){
                printf("\n");
            }
        }
    }
    printf("100以内素数之和为：%d",sum);
}