输出一个大于三的的整数n,判定它是否为素数

#include<stdio.h>int main(){int n,i;printf("please enter a integer number,n=?");scanf("%d",&n);for(i = 2;i <= n-1;i++){if(n%i == 0){break;}if(i > n){printf("%d is not a prime number.\n",n);}else{printf("%d is a prime number.\n",n);}}return 0;}