3.1 Inheritance

Several technical aspects make inheritance unique in our context:

• Each member of the superclass is inherited exactly once.
• Can access protected and public members of the superclass.
• Members of the superclass can be masked by those of the subclass.
• The reference or address of a subclass object can be up casted to that of a superclass if it is a public inheritance.
• The reference or address of a superclass can be dynamically down casted to that of a subclass if it is a public inheritance, and the superclass is polymorphic.