JavaScript is one of the most popular languages used by programmers all around the world. In this course, you'll be introduced to the Object-Oriented Paradigm of JavaScript. The course will discuss OOP in both, ES5 and ES6 versions of JavaScript. It begins with a basic introduction to what Object-Oriented programming is, followed by its comparison to other languages. It then introduces the new  OOP features available in ES6 version and compares it to the ES5 version. The course then discusses objects in JavaScript followed by the use of function as objects in OOP. It goes over the interesting concepts of prototype objects, data encapsulation, and classes. It then delves into the more complex concepts of inheritance in both the versions, including prototypal inheritance, prototype chaining, method overriding and mixins. The course is filled with interesting illustrations to help in your understanding of the concepts as well as numerous quizzes and exercises to help you practice.

Learn Object-Oriented Programming in JavaScript

# Problem Statement
This exercise has **two parts**.

## First Part
The shop decided to offer a **10%** discount on `Cheese`. In the first part, you are required to write a **set** function `setPrice` which updates the `price` after computing the discount.

## Second Part
In the second part, you are required to implement the same functionality but this time you need to make the function using `set` keyword instead. As an addition, you also need to call `setPrice` in the `testFunc` function given.

>**Note:** We are using the `testFunc` function for testing purposes so no need to worry. Just call your function there.


## Sample Input

20

## Sample Output

18

>**Note:** The skeleton function for `setPrice` is given in both the code tabs. Right now it is not being passed any parameters but you need to pass it appropriate *parameter/parameters*, use appropriate *keywords* and write the code for implementation as well. 





In this exercise, you will be required to write a set function both with and without the set keyword.

Exercise 4: Discount? Wow

Problem Statement