檸檬的C語言初學日誌

#include <iostream>
#include <cstdlib>
using namespace std;

int main()
{
    //定義一個整數變數
    int inum;
    int refer;
    while(1){
       //輸入一個整數值
       cout << "請輸入一個整數值: ";
       cin >> inum;
       for( refer = 2 ; refer <= inum ; refer++ ){
          if(refer == inum) cout << "此數是質數" << endl;
          else if(inum % refer == 0) {
                cout << "此數不是質數" << endl;
                break;
          }
          else {
               continue;
               cout << "此數是質數" << endl;
          }
       }
    }
    return 0;
    system("pause");
}