Is Prim

//Is Prime

//Author: Ahmed Sayed

#include <iostream>

using namespace std;

int main ()

{

  int num;

  do {

  cout << "Enter a number for checking or '0' to exit:_ "; cin >> num;

  bool flag = true;

  for (int i=2; i<=num/2; i++)

  if (num%i==0)

    flag = false;

   if (flag)

  cout << "Prim!\n" << endl;

     else

  cout << "Not Prim\n

  " << endl; }while (num!=0); 

  

system ("pause");

return 0;

}