Explain the need of object oriented programming withsuitable program?

Object-oriented programming (OOP) is a programming paradigm that uses "objects" – data structures consisting of data fields and methods together with their interactions – to design applications and computer programs.

The need for object-oriented programming arises from the following benefits it provides:

1. Modularity for easier troubleshooting: When a program is divided into classes and objects, if something goes wrong, you know exactly where to look. You can fix that particular object without affecting other parts of your code.

2. Reuse of code through inheritance: Suppose you write a class and then need a modified version of it. Instead of rewriting the whole class, you can inherit the properties of the existing class and make your changes. This saves time and effort.

3. Flexibility through polymorphism: This allows you to use a child class as if it were the parent class. This gives you a way to write more efficient code.

4. Effective problem solving: OOP is good when you have fixed set of operations and the lists of things those operations apply to are likely to change.

Here is a simple example of OOP in Python:

class Car:
    def __init__(self, color, brand):
        self.color = color
        self.brand = brand

    def display(self):
        print("This is a", self.color, self.brand)

car1 = Car("red", "Toyota")
car1.display()

In this program, Car is an object, which has attributes (color, brand) and methods (display). This is a simple demonstration of how OOP can be used to encapsulate related properties and behaviors into individual objects.