Virtual Function is declared with keyword 'virtual' at the declaration. Ex : virtual return_type function_name(function arguments); Pure-virtual functions need not be implemented in the base class, ...

* Description: Example of how to use a pure virtual destructor in C++. We * would use a pure virtual destructor when we want a class to be abstract BUT * we also don't want any of the other member ...

In C++, a pure virtual function is a virtual function that you declare in a base class but don't define. A class containing a pure virtual function is called an abstract class, and you can't create ...