Exploring C++20: The Programmer's Introduction to C++

© Ray Lischner 2020

R. LischnerExploring C++20https://doi.org/10.1007/978-1-4842-5961-0_38

38. Inheritance

Ray Lischner¹ 

(1)

Ellicott City, MD, USA

 

The previous Exploration introduced general OOP principles. Now it’s time to see how to apply those principles to C++.

Deriving a Class

Defining a derived class is just like defining any other class, except that you include a base class access level and name after a colon. See Listing 38-1 for an example of some simple classes to support a library. Every item in the library is a work of some kind: a book, a magazine, a movie, and so on. To keep things simple, the class work has only two derived classes, book and periodical.

import <iostream>;

import <string>;

import <string_view>;

class work

{

public:

  work() ...