Opps concept

OBJECT ORIENTED PROGRAMMING

Q1. What is Object Oriented Programming?

Ans:-
a) Object Oriented Programming decomposes a program into real world entities called as objects and then creates data and function around these objects. 
b)   Object Oriented Programming is based on 4 major pillars which are as follows:

                          i. Data  Abstraction:-

This deals with identifying the key aspects of a system. This is normally required during requirement analysis phase.

                          ii.ata    Encapsulation:-

The key aspects identified during abstraction are secured using encapsulation. This deals with hiding the interface from implementation. Hence its purpose is security.

                          iii.  Inheritance:-

This deals with incorporating the essential features from a base class in a derived class. Thus it helps in reusability of methods and its main purpose is for grouping.

                          iv. polymorphism:

   C++ Program Structure:

Let us look at a simple code that would print the words Hello World.

#include <iostream>
using namespace std;

// main() is where program execution begins.

int main()
{
   cout << "Hello World"; // prints Hello World
   return 0;
}