The member functions of base class are preceded by the keyword virtual. If the virtual
keyword is
removed, both the function calls execute the member functions of base class. The member functions for derived
classes are not executed though the pointer has the address of the derived class. If the virtual keyword is not
removed, the first function calls, executes the member function of base class and later derived class.
19.6 ARRAY OF POINTERS
Polymorphism refers to late or dynamic binding i.e., selection of an entity is decided at run-time. In class hierarchy,
same method names can be defined ...
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