题解 | #判断一个数是不是质数#

#include <iostream>
using namespace std;

int main() {

    // write your code here......
    int n;
    cin>>n;
    int t,sum = 0;
    for(int i = 1;i <= n;i++)
    {
        t = n%i;
        if(t == 0)
        {
            sum += 1;
        }
        else {
        sum += 0;
        }
    }
    if(sum == 2)
    {
        cout<<"是质数"<<endl;
    }
    else
    {
    
        cout<<"不是质数"<<endl;
    
    }

    
}