// Example of re-validating CIN
//
// George Cross, Borland C++ Developer Support, April 1997
//
// Build with BC++ 5
//
//   bcc32 -v thisfile.cpp
//

#include <iostream.h>
void main()
{
  int x;
  do{
    cout << "Please enter a number greater than zero.  ";
    cin >> x;
    if (cin.fail()){
      cin.clear(); 
      cin.rdbuf()->overflow();
      x = 2;                    //force "Invalid number." 
    }
    switch (x){
    case 0:
      cout << "Terminating.\n";
      break;
    case 1:
      cout << "You've entered Sunday.\n";
      break;
    default:
      cout << "Invalid number. Please try again.\n";
    } 

  }while (x > 0);
}