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 `student` with 

* `private` *member variables*: 

  * `name`(`string` type)

  * `mark1` and `mark2` (**float** type)

And *member functions*:

* `Get_Marks(int marknumber)`, a *function* which should return `mark1` if `marknumber` equals **1** and `mark2` otherwise.
 
* `calc_total()` *function* should take the **two** marks entered and *return* their **sum**. 

Also *define* **two** *constructors*:
* A *default constructor* that takes **no** *parameters* and *initializes* the values to **zeros** and `null`.
* A *constructor* that takes the **three** *variables* and *sets* them to given *values*.
### Input
Name of student, marks in first and second test
### Output
Sum of both marks
### Sample Input
``` C++
("Jack", 60, 70)
```
### Sample Output
``` C++
GetMarks(1)  => 60
GetMarks(2)  => 70
calc_total() => 130
```

# Problem Statement

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

* `private` *member variables*: 

  * `name`(`string` type)

  * `mark1` and `mark2` (**float** type)

And *member functions*:

* `Get_Marks(int marknumber)`, a *function* which should return `mark1` if `marknumber` equals **1** and `mark2` otherwise.
 
* `calc_total()` *function* should take the **two** marks entered and *return* their **sum**. 

Also *define* **two** *constructors*:
* A *default constructor* that takes **no** *parameters* and *initializes* the values to **zeros** and `null`.
* A *constructor* that takes the **three** *variables* and *sets* them to given *values*.
## Input
Name of student, marks in first and second test
## Output
Sum of both marks
## Sample Input
``` C++
("Jack", 60, 70)
```
## Sample Output
``` C++
GetMarks(1)  => 60
GetMarks(2)  => 70
calc_total() => 130
```

In this exercise, you have to calculate a student's total marks using the concept of Classes

Introduction

Classes

Data Hiding

Inheritance

Polymorphism

Conclusion

Challenge 2: Calculate Student's Total Marks

Problem Statement