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. A common example is method overriding in derived classes.

Can you give me a code example?

Sure! Here's a simple example:

class Animal {
public:
    virtual void sound() { std::cout << "Animal sound"; }
};

class Dog : public Animal {
public:
    void sound() override { std::cout << "Bark"; }
};

class Cat : public Animal {
public:
    void sound() override { std::cout << "Meow"; }
};

void makeSound(Animal* a) {
    a->sound();
}

int main() {
    Dog dog;
    Cat cat;
    makeSound(&dog); // Outputs: Bark
    makeSound(&cat); // Outputs: Meow
}

This demonstrates polymorphism through the sound method.

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.

Are there any other types of polymorphism in C++?

Yes, besides compile-time and run-time polymorphism, C++ also supports ad-hoc polymorphism through templates, allowing functions and classes to operate with any data type.