Something

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
    cout<<"First program!\n";
    int num=0;
    
    do {
          cout << "What is 2 * 2: ";
          cin >> num;
          
          if(num!=4) cout << "WRONG! try again...\n";
    } while ( num != 4 );
    
    cout<<"CORRECT!\n";
    cin.get();
    system("PAUSE");
    return EXIT_SUCCESS;
}