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++

## The Purpose of Member Functions

Member functions define the behaviour of the class.

These functions can either alter the content of the data variables or use their values to perform a certain computation. Typically, member functions are declared as *public*, although, some functions which do not need to be accessed from the outside could be kept private.

## Declaration and Definition

Like all functions, member functions can either be defined straightaway, or they could be declared first and defined later. 

Here's an example of a function being defined in the class:

# The Purpose of Member Functions

Member functions define the behaviour of the class.

These functions can either alter the content of the data variables or use their values to perform a certain computation. Typically, member functions are declared as *public*, although, some functions which do not need to be accessed from the outside could be kept private.

# Declaration and Definition

Like all functions, member functions can either be defined straightaway, or they could be declared first and defined later. 

Here's an example of a function being defined in the class:

In this lesson, we will highlight the role of member functions in classes.

Introduction

Classes

Data Hiding

Inheritance

Polymorphism

Conclusion

Class Member Functions

The Purpose of Member Functions

Declaration and Definition