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

void IsPrime(int);
int main()
{
  int Input;
  cout << "請輸入要判斷的數(shù)字：";
  cin >> Input;
  IsPrime(Input);
  cin.get();
  cin.get();
  return 0;
}

//判斷是否為質(zhì)數(shù)
void IsPrime(int x)
{
  if (1 == x)
  {
    cout << "1既不是質(zhì)數(shù)也不是合數(shù)！" << endl;
    return;
  }
  for (int i = 2; i <= sqrt(x); i++)
    if (x%i == 0)
    {
      cout << "您所輸入的數(shù)字為合數(shù)！" << endl;
      return;
    }
  cout << "您所輸入的數(shù)字為質(zhì)數(shù)！" << endl;
  return;
}