What are some examples of polymorphism in C++?

What are some examples of polymorphism in C++?

Polymorphism in C++ allows methods to do different things based on the object that it is acting upon. For example, you can have a base class called 'Shape' with a method 'draw()'. Derived classes like 'Circle' and 'Square' can implement their own versions of 'draw()'.

Can you show me a code example?

Sure! Here's a simple example:

#include <iostream>
using namespace std;

class Shape {
public:
    virtual void draw() { cout << "Drawing a shape" << endl; }
};

class Circle : public Shape {
public:
    void draw() override { cout << "Drawing a circle" << endl; }
};

class Square : public Shape {
public:
    void draw() override { cout << "Drawing a square" << endl; }
};

int main() {
    Shape* shape1 = new Circle();
    Shape* shape2 = new Square();
    shape1->draw(); // Outputs: Drawing a circle
    shape2->draw(); // Outputs: Drawing a square
    delete shape1;
    delete shape2;
}

What is the difference between compile-time and run-time polymorphism?

Compile-time polymorphism is achieved through function overloading and operator overloading, while run-time polymorphism is achieved through method overriding using virtual functions.