//
// Filename:      pgm2_9a.cpp
//
// Description:   Demonstration of logical OR and logical AND.
//
// ENSC 104:      Digital Computer Programming
//
// Instructor:    Dr. Walsh
//
// Section:       2
//
// Date Created:  02/23/98
// Last Modified: 02/23/98
//
// Name:          N/A
//

#include <iostream.h>

int main( int argc, char *argv[] )
{
   int x;
   int y;

   cout << " X " << " Y " << " X&&Y "
        << " X||Y "
        << " !X "
        << " !Y "
        << " !X||!Y "
        << " !(X&&Y) " << endl;
   cout << "*****************************************\n";

   for( x=0; x<=1; x++)
      {
      for( y=0; y<=1; y++)
         {
         cout << " "        << x
              << "  "       << y
              << "   "      << (x&&y)
              << "     "    << (x||y)
              << "     "    << (!x)
              << "   "      << (!y)
              << "    "     << ( !x || !y)
              << "        " << (!( x && y ))
              << endl;
         }
      }

   cout << "\n\nDEMORGAN'S LAW\n";
   cout << "****************\n\n";
   cout << " !(X&&Y) = !X || !Y\n\n";
   cout << "and\n\n";
   cout << " !(X||Y) = !X && !Y\n";

   return 0;
   }