#include <iostream.h>      // Allow me to use I/O operations.

int main()                 // C++ programs always have a main function
                           //   where execution starts.
{
  int x = 5;               // Like Scheme's define expression.
  int y = 8;

  int z = x + y;           // Declare *and* initialize z.

  z = x - y;               // like Scheme's set! expression.
                           // note: this throws away the previous value
                           //       just computed.
  
  cout << "This silly program computes ";
  cout << x;
  cout << " minus ";
  cout << y;
  cout << ", equals ";
  cout << z;
  cout << ".\n";

  return 0;               // Return error code 0, i.e., no error.
}