题解 | #判断一个数是不是质数#

#include <iostream>
using namespace std;

int main() {

    // write your code here......
    int x;
    cin>>x;
    for(int i = 2; i<= x;i++){
        if (x ==i){
            cout<<"是质数"<<endl;
            break;
        }
        if(x % i == 0){
            cout<<"不是质数"<<endl;
            break;
            }
    }
    return 0;
}