Although polymorphism is not limited to virtual functions, we will discuss them in more detail because dynamic polymorphism is the most popular form of polymorphism in C++. And again, the best way to better understand a concept or technology is by implementing it on your own. Whether we declare a virtual member function in a class or it has a base class with virtual functions, the compiler augments the class with an additional pointer. The pointer points to a table that's usually referred to as a virtual functions table, or simply a virtual table. We also refer to the pointer as the virtual table pointer.
Let's suppose we are implementing a class subsystem for a bank customer account management. Let's say ...
