Why do we need object oriented programming?

The Object Oriented Programming Languages directly represent the real life objects like Automobile, Flower, Pen etc. The most used  and powerful features of OO programming are polymorphism, inheritance and encapsulation.

[Tip to remember : PIE - Polymorphism, Inheritence and Encapsulation.].

Benefits of OOP

Reusable: Using the concept of inheritance the implementation of other class can be used. For example, if we have a to create classes for birds, we can have a prent class Bird which can implement functionality fly(). This functionality remains same for all child bird classes which inherit the parent class Bird.

Simple: OOP represents the real life objects. This real mapping easy understanding, reduction of complexity and makes the program structure simpler.

Modular: Usage of objects, classes etc helps in clubbing the relevent functinality together. This helps in easy understanding if the system and also makes the implementation independent of each other. This makesThis in turn will make it very easy to modify the system when required.  

Maintainable: It becomes very easy to make minor changes to the system as this approach is modular and is loosely coupled. The entire system need not be modified to incorporate the changes and hence reduces the development time.

Extensible: It is specified that the system becomes loosely coupled. This makes it easy to plug in more features to the system. This way we can extend the application to provide more features to the user. 

Summary

Considering the above points we can conclude that using OOP can definetly help us in providing quality code. This can be achieved as we will be able to reuse the code which helps us avoid code and test the reuse sections. This not only helps us in reducing the defects but can also reduces the development time.

Maintainence of the application becomes very easy as OOP is more extensible, reusable and modular.