Lesson 1 Inheritance and pure polymorphism
		This module explores the fundamentals of inheritance and pure polymorphism, including the use of derived classes and virtual functions to create a class hierarchy. You will learn: What inheritance is and why it is so important to the object-oriented programming paradigm What virtual member functions are and how they are used How to derive a class from a base class and create a class hierarchy How public inheritance implements an ISA relationship between a derived class and the base class How a reference to the derived class may be implicitly converted to a reference to the public base class What pure virtual functions are and why they are useful in creating abstract base classes The uses of the C++-specific cast operators How to use Runtime Type Identification (RTTI) to safely determine the type pointed at by a base class pointer at runtime How to code exceptions to catch unexpected conditions