Virtual Functions

Lecture 5 - Slide 6 : 40

Virtual Functions

A virtual member function in C++ works as expected:

The dynamic type of the receiver controls which function to call.

Destructors may also be virtual, §17.2.5 (4ed).

Conditions for getting polymophic behavior in C++: obj_ptr->f()
- A virtual member function f must be called
- The object must be accessed via a pointer or a reference
Avoiding polymorphic behavior with a virtual function f
- Activate f with a scope resolution operation: obj_ptr->A::f(...)