6. Inheritance and Object-Oriented Design
Object-oriented programming (OOP) has been the rage for almost two decades, so it's likely that you have some experience with the ideas of inheritance, derivation, and virtual functions. Even if you've been programming only in C, you've surely not escaped the OOP hoopla.
Still, OOP in C++ is probably a bit different from what you're used to. Inheritance can be single or multiple, and each inheritance link can be public, protected, or private. Each link can also be virtual or non-virtual. Then there are the member function options. Virtual? Non-virtual? Pure virtual? And the interactions with other language features. How do default parameter values interact with virtual functions? How does inheritance ...
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