14. Resolving overloaded function calls example

• 
      void print( char ch   );
      void print( int num   );
      void print( char* str );
  
      void foo()
      {
          print( 'g' );  // exact match with char
          print( 3 );    // exact match with int
          short xx = 2;
          print( x );    // promotes x to int
          print( 3.4 );  // error: ambiguous call to overloaded function
          print( "OK" ); // exact match with char*
          print( NULL ); // exact match with int (!!!)
      }