Explore OOP in C++ to write cleaner, modular, and scalable code. Learn classes in C++, data hiding, encapsulation, abstraction, inheritance, and polymorphism in C++.

Become  a C++ Programmer

This module aims to teach us how to write cleaner, more modular, and scalable code in C++ by providing an understanding of OOP in C++. We'll start with the basics of object-oriented programming and build up to advanced concepts such as inheritance, data hiding, and polymorphism. Along the way, we'll explore how each concept applies to C++ and how various C++ features facilitate OOP.

Object-Oriented Programming in C++

## Custom Objects

In C++, we have several different data types like `int`, `string`, `bool` etc. An object can be created out of any of those types. An *object* is an instance of a class. Well, object-oriented programming wouldn't make sense if we couldn't make our own custom objects. This is where **classes** come into play.

Classes are used to create _user-defined data types._  We can use these basic data types to create our own class. The cool part is that our class can contain multiple variables, pointers, and functions which would be available to us whenever a class object is created.

Let's start off with an example of a **car** class. Below, we can see that a car object would contain:

# Custom Objects

In C++, we have several different data types like `int`, `string`, `bool` etc. An object can be created out of any of those types. An *object* is an instance of a class. Well, object-oriented programming wouldn't make sense if we couldn't make our own custom objects. This is where **classes** come into play.

Classes are used to create _user-defined data types._  We can use these basic data types to create our own class. The cool part is that our class can contain multiple variables, pointers, and functions which would be available to us whenever a class object is created.

Let's start off with an example of a **car** class. Below, we can see that a car object would contain:

This section will familiarize us with the basic building blocks of object-oriented programming: Classes. 

Introduction

Classes

Data Hiding

Inheritance

Polymorphism

Conclusion

What is a Class?

Custom Objects