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#

# Definition

> The word **Polymorphism** is a combination of two Greek words, **Poly**, which means *many*, and **Morph** which means *forms*.



In OOP, *polymorphism* refers to the same object exhibiting different forms and behaviors.

Let's have a look at the example of a vending machine. We have several products in it. The customer can buy any of these products. All of these products have different properties.
This is an example of **Polymorphism**.

# A Brief Introduction
Assume there is a base class named `Product` from which the child classes `Beverage`, `Chocolate`, and `Snack` are derived.

In our vending machine, these products are placed at locations marked by numbers. A customer comes to our machine and inputs the location of a specific product using the keypad. Now in return, the machine's screen has to let the customer know about the selected product's price. We, the owners of the machine, have decided on specific criteria to calculate the selling price for each category of the products as follows:

In this lesson, the concept of polymorphism will be explained which is an important part of OOP.

Introduction to Object-Oriented Programming

Classes and Objects

Data Hiding

Inheritance

Polymorphism

Abstract Classes and Interfaces

Composition, Aggregation and Association

What Is Polymorphism?

Definition