从键盘输入一个整数m

#include <stdio.h>
int main()
{
    int n;
    scanf("%d",&n);
    if(n%3==0 && n%7!=0)
        printf("yes!);
    else
      printf("no!");
    return 0;
}

#include<stdio.h>
int main() {
    int m;
    scanf("%d", &m);
    printf( m % 3 == 0 && m % 7 != 0 ? "yes" : "no");
}

结果:

15
yes