What are some examples of abstract classes in C++11?

Can you explain what an abstract class is in C++11?

An abstract class in C++11 is a class that cannot be instantiated and typically contains at least one pure virtual function.

Could you provide an example of an abstract class?

Sure! Here's a simple example:

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

What about a derived class that implements this abstract class?

Here's an example of a derived class:

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

Can you explain how to use these classes in a program?

Certainly! You can create a pointer of type Shape and assign it to an instance of Circle:

Shape* shape = new Circle();
shape->draw();