C++20 for Lazy Programmers: Quick, Easy, and Fun C++ for Beginners

© Will Briggs 2021

W. BriggsC++20 for Lazy Programmershttps://doi.org/10.1007/978-1-4842-6306-8_15

15. Classes

Will Briggs¹  

(1)

Lynchburg, VA, USA

 

Till now, what we’ve covered has been essentially C with a few tweaks, notably cin and cout. Now it’s time to add the thing that puts the + in C++: classes. They won’t give us new abilities like cin/cout, SSDL functions, or control structures like loops. What they will do is help us keep things organized so we don’t get confused; minimize errors; and make expressing things simpler – so we can trust the code we write and use it for bigger and better projects.

As an example, here’s a class type to store a calendar date:

class Date

{

    int day_;

    int month_;

    int year_;

};

...

Date appointment; // Variables ...