C++: Create abstract class with abstract method and override the method in a subclass

Question

How to create in C++ an abstract class with some abstract methods that I want to override in a subclass? How should the .h file look? Is there a .cpp

Answer 1

In C++ you use the keyword virtual on your routines, and assign =0; into them. Like so:

class GameObject {
public:
    virtual void update()=0;
    virtual void paint(Graphics g)=0; 

}

Having a virtual method with a 0 assigned into it automagically makes your class abstract.