WAP to use Macro expansion Logical operator

/*WAP to use Macro expansion Logical operator*/

#include<stdio.h>
#include<conio.h>
#define AND &&
#define OR  ||
main( )
{
 int  f = 1, x = 4, y = 90 ;

 if ( ( f < 5 ) AND ( x <= 20 OR y <= 45 ) )
  printf ( "\nYour PC will always work fine..." ) ;
 else
  printf ( "\nIn front of the maintenance man" ) ;
 getch();
}