What is a class?

Answer 1

A block of code which is used to store members, such as functions and variables. You can make a class on anything you like, such as an enemy in a video game, with members such as "int health" or "void attack()".

Classes are good for structuring code, and will make life a whole lot easier if you were to start writing much larger programs.

Classes are so useful in C++ especially, thanks to features such as inheritence and polymorphism.