判定素数

未分类

include

include

int main(void)
{
int a,b;
printf("请输入一个自然数:\n");
scanf("%d",&b);
for(a=2;a<=b/2;a++)
{
if(b%a==0)
break;
if(a=b)
printf("yes");
else
printf("no");
}
return 0;
}