What are the best practices for inheritance in C++?

What are the best practices for inheritance in C++?

When using inheritance in C++, it's important to follow best practices like using public inheritance, favoring composition over inheritance, and ensuring proper use of virtual destructors.

Can you explain why composition is preferred over inheritance?

Composition is often preferred because it promotes code reuse and flexibility. It allows you to build complex types by combining simpler ones without the tight coupling that inheritance can create.

What is a virtual destructor and why is it necessary?

A virtual destructor ensures that the destructor of the derived class is called when an object is deleted through a base class pointer, preventing resource leaks.

Are there any specific scenarios where inheritance is actually beneficial?

Yes, inheritance is beneficial when you have a clear 'is-a' relationship, such as a class hierarchy for shapes where a 'Circle' is a 'Shape'. It allows for polymorphism and code organization.