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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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#

# What Is Multiple Inheritance?
When a class is derived from more than a single base class, i.e., when a class has more than one immediate parent, it is an instance of **multiple Inheritance**.
Let's take an example of Redbull:



RedBull is an energy drink as well as a beverage.

# How to Implement?
As mentioned earlier, in C#, a class can't extend from more than one classes. So the question arises, "*How can we implement multiple inheritance?*" 

The answer to the above question is an ***Interface***. In C#, *multiple inheritance* can be implemented using interfaces.
>A class can implement multiple interfaces and an interface can `extend` from multiple interfaces.

So, in this way, we can achieve multiple inheritance in C#. We already know that interfaces can only contain `public abstract` members with no implementation details. These members **must** be implemented by the class implementing this interface. This is not a pure form of inheritance, but nonetheless, it helps us in implementing functionalities from multiple sources.

# An Example

Let's implement the example of `RedBull` given at the start of the lesson. This example can be implemented using:
* A base *class* named `Beverage`
* An *interface* named `IEnergyDrink`
* A `RedBull` class derived from `Beverage` and implementing `IEnergyDrink`

The above illustration then becomes:


In this lesson, you'll learn what multiple inheritance is and how it can be implemented in C#.

Introduction to Object-Oriented Programming

Classes and Objects

Data Hiding

Inheritance

Polymorphism

Abstract Classes and Interfaces

Composition, Aggregation and Association

Multiple Inheritance

What Is Multiple Inheritance?

How to Implement?