What are interfaces in C++?

Can you explain what interfaces are in C++?

In C++, an interface is typically defined using abstract classes that declare pure virtual functions.

What is a pure virtual function?

A pure virtual function is a function declared in a base class that has no implementation and must be overridden in derived classes.

How do interfaces help in programming?

Interfaces promote a contract for classes, allowing for polymorphism and enabling different classes to be used interchangeably.

Can you give me an example of an interface in C++?

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
    }
};