Runtime polymorphism is a C++ feature that allows objects of different classes to be treated as objects of a common base class. This is achieved through the use of virtual functions, which are member functions that are overridden in derived classes. When a virtual function is called on an object, the actual function that is executed is determined at runtime based on the object’s dynamic type.
Runtime polymorphism is a powerful tool that can be used to achieve a variety of design goals. Some of the most common uses for runtime polymorphism include: