What are some examples of interfaces in C++?

What are some examples of interfaces in C++?

In C++, interfaces are typically created using abstract classes. An example would be a class IShape with a pure virtual function draw().

Can you show me a code example of that?

Sure! Here's a simple example:

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

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

class Square : public IShape {
public:
    void draw() override {
        // Implementation for drawing a square
    }
};

How do I use these interfaces in my code?

You can use these interfaces by creating objects of the derived classes and calling the draw() method. For example:

IShape* shape1 = new Circle();
shape1->draw();
IShape* shape2 = new Square();
shape2->draw();