Gain insights into OOP with C#. Delve into practical coding examples and exercises, exploring OOP concepts through a real-world vending machine project to understand and apply them effectively.

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Project

Object-oriented programming (OOP) has been around for decades. As the original object-oriented language, C# is a mainstay in the world of computer programming.

All the concepts of object-oriented programming that C# developers love to have in their arsenal are explained in detail along with relevant coding examples and exercises in this course.

This course is unique in its nature as it follows a project-based learning approach. Throughout the course, a real-world example of vending machine is followed to help the learners develop a firm understanding of the stated OOP concepts.

The learners will not only be able to play around with the project,  they’ll also be able to see all the concepts in action in this project.

Learn Object-Oriented Programming in C#

`Composition` is the practice of accessing other class objects in your class. In such a scenario, the class which creates the object of the other class is known as the *owner* and is responsible for the lifetime of that *owner* object.

 Composition relationships are **Part-of** relationships where the part must be a constituent of the whole object and cannot exist independently of the whole. We can achieve composition by adding the classes together like parts in another class to make a complex unit.

So, what makes the composition unique? 

> In **composition**, the lifetime of the owned object depends on the lifetime of the owner. 

# Example

For the sake of simplicity, let's assume that a `VendingMachine` is composed of a *Display* and *KeyPad*. In this case, a `VendingMachine` owns these objects so it is an *Owner* class and `Display` and `KeyPad` classes are *Owned* classes. 

In this lesson, you'll learn how to achieve composition in C#.

Introduction to Object-Oriented Programming

Classes and Objects

Data Hiding

Inheritance

Polymorphism

Abstract Classes and Interfaces

Composition, Aggregation and Association

Composition