C++20 for Programmers: An Objects-Natural Approach, 3rd Edition

10. OOP: Inheritance and Runtime Polymorphism

Objectives

In this chapter, you’ll:

• Use traditional and modern inheritance idioms, and understand base classes and derived classes.

• Understand the order in which C++ calls constructors and destructors in inheritance hierarchies.

• See how runtime polymorphism can make programming more convenient and systems more easily extensible.

• Use override to tell the compiler that a derived-class function overrides a base-class virtual function.

• Use final at the end of a function’s prototype to indicate that function may not be overridden.

• Use final after a class’s name in its definition to indicate that a class cannot be a base class.

• Perform inheritance with abstract and concrete classes.

• See how C++ can implement ...