5. A named rectangle

• Consider an "advanced" version of the rectange:

  1. The rectangle now has to be named when it is created:

     
         Rectangle rect( "first", 333, 222 );
     
     

  2. Additionally, we would like to have set_name() member function that changes the name:

     
         Rectangle rect2 = rect; // make a copy
         rect2.set_name( "second" );
     
     

• Named graphical primitives are very useful: they can display their name as a label when shown on the screen or identify themselves during program debugging.