What are abstract classes in C++ inheritance?

What are abstract classes in C++ inheritance?

Abstract classes in C++ are classes that cannot be instantiated and are designed to be base classes. They can contain pure virtual functions.

Can you give me an example of an abstract class?

Sure! Here's a simple example:

class Shape {
public:
    virtual void draw() = 0; // Pure virtual function
};

What happens if I try to create an object of an abstract class?

If you try to instantiate an abstract class, you'll get a compilation error because abstract classes are meant to be inherited.

How do I implement an abstract class in a derived class?

You need to override the pure virtual functions in the derived class. For example:

class Circle : public Shape {
public:
    void draw() override {
        // Implementation for drawing a circle
    }
};