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++

## Problem Statement

Write a C++ **class** called `Calculator` with 

* `private` *member variables*: 

  * `num1` and `num2` (**float** type)

And *member functions*:

* `add(float n1, float n2)`, a *function* which returns the addition of two numbers

* `Subtract(float n1, float n2)`, a *function* which returns the subtraction of n1 from n2
 
* `multiply(float n1, float n2)`, a *function* which returns the multiplication of numbers

* `divide(float n1, float n2)`, a *function* which returns the division of n2 by n1

* Define a default constructor which initializes both numbers by **zeros**

### Input
Pass floating point numbers in the member functions

### Output
Addition, Subtraction, division, and multiplication
### Sample Input
``` C++
calculator obj;
obj.add(10, 94)
obj.subtract(10, 94)
obj.multiply(10, 94)
obj.divide(10, 94)
```
### Sample output
``` C++
104
84
940
9.4
```

# Problem Statement

Write a C++ **class** called `Calculator` with 

* `private` *member variables*: 

  * `num1` and `num2` (**float** type)

And *member functions*:

* `add(float n1, float n2)`, a *function* which returns the addition of two numbers

* `Subtract(float n1, float n2)`, a *function* which returns the subtraction of n1 from n2
 
* `multiply(float n1, float n2)`, a *function* which returns the multiplication of numbers

* `divide(float n1, float n2)`, a *function* which returns the division of n2 by n1

* Define a default constructor which initializes both numbers by **zeros**

## Input
Pass floating point numbers in the member functions

## Output
Addition, Subtraction, division, and multiplication
## Sample Input
``` C++
calculator obj;
obj.add(10, 94)
obj.subtract(10, 94)
obj.multiply(10, 94)
obj.divide(10, 94)
```
## Sample output
``` C++
104
84
940
9.4
```

In this exercise, you have to implement a calculator which can perform addition, subtraction, multiplication, and division.

Introduction

Classes

Data Hiding

Inheritance

Polymorphism

Conclusion

Challenge 3: Implement a Calculator Class

Problem Statement