Resolving overloaded function calls

• Most cases are intuitive and unambiguous.

• Some ambiguities can be resolved by the compiler.

• If not, the call is an error and needs to be resolved by programmer.

• Resolution tries (in order):

  • exact match,   promotion,   and   conversion.

  
  void print( char c_  );
  void print( int i_   );
  void print( char* s_ );
  
  void f()
  {
      print( 'g' );  // exact match with char
      print( 3 );    // exact match with int
      short x;
      print( x );    // promote to int
      print( 3.4 );  // error: ambiguous call to overloaded function
      print( "OK" ); // exact match with char*
      print( NULL ); // exact match with int (!!!)
  }