Chapter Goals

To be able to describe the information conveyed by a class hierarchy
To understand the concept of the polymorphic variable and its relationship to class hierarchies
To understand the interaction between polymorphism and memory management
To understand how to distinguish between virtual and nonvirtual overriding and the uses of each
To understand the concept of downcasting, moving both up and down the class hierarchy
To understand the concept of multiple inheritance
To learn how to design and use software frameworks