Why Object Oriented Programming Is Preferred Over Structured Programming?


Angela Bailey

Object-Oriented Programming (OOP) has become the preferred paradigm over Structured Programming due to its numerous advantages and flexibility. In this article, we will explore the reasons why OOP is favored by developers and how it enhances code reusability, maintainability, and scalability.

What is Object-Oriented Programming?

Object-Oriented Programming is a programming paradigm that revolves around the concept of objects. It breaks down the problem into smaller entities called objects, which interact with each other to achieve a common goal.

These objects encapsulate data and methods that operate on that data.

Advantages of Object-Oriented Programming:

1. Code Reusability:

One of the key advantages of OOP is code reusability.

With OOP, developers can create reusable classes or objects that can be used in multiple projects without rewriting the entire code. This saves time, effort, and reduces the chances of introducing bugs.

2. Modularity:

OOP promotes modularity by breaking down complex problems into smaller modules (classes).

Each class represents a specific functionality or behavior, making it easier to understand, test, and maintain. Modularity also allows for better collaboration among team members as they can work on different modules independently.

3. Encapsulation:

Encapsulation is a fundamental principle in OOP that combines data and methods within an object, hiding internal details from outside access.

This protects the integrity of data and prevents accidental modifications from external sources. Encapsulation also enables abstraction by exposing only necessary information through well-defined interfaces.

4. Inheritance:

Inheritance is a powerful feature of OOP that allows classes to inherit properties and behaviors from other classes.

With inheritance, developers can create a hierarchy of classes, where the child classes inherit and extend the functionalities of parent classes. This promotes code reuse, reduces redundancy, and enhances maintainability.

5. Polymorphism:

Polymorphism allows objects of different types to be treated as objects of a common type.

This means that a single interface can be used to represent multiple implementations. Polymorphism enhances flexibility and extensibility, making it easier to introduce new functionality or modify existing behavior without affecting the overall system.

Why OOP is Preferred Over Structured Programming?

While Structured Programming has its merits, OOP offers several advantages that make it the preferred choice for modern software development. Let’s explore why OOP is considered superior:

1. Better Organization:

OOP enables better organization of code by grouping related data and behaviors into objects or classes.

This provides a clear structure to the codebase, making it easier to understand and navigate. In contrast, structured programming lacks this level of organization as it relies on functions operating on global data. Easier Maintenance:

OOP promotes modular design, which results in smaller and more manageable code units (classes).

This modularity allows developers to isolate and fix bugs or add new features without affecting the entire system. In structured programming, modifying one part of the code may require changes in multiple places, leading to maintenance nightmares. Greater Flexibility:

OOP’s flexibility comes from its ability to model real-world entities through objects.

This modeling approach allows developers to mimic real-world scenarios more accurately and handle complex relationships between objects effectively. Structured programming lacks this level of flexibility as it primarily focuses on procedures and functions. Enhanced Reusability:

OOP’s emphasis on code reusability allows developers to create libraries or frameworks that can be utilized across multiple projects.

This significantly reduces development time and effort, as existing code can be leveraged instead of reinventing the wheel. In structured programming, reusing code requires copy-pasting or rewriting the same logic multiple times. Scalability:

OOP provides a solid foundation for building scalable applications.

The modular nature of OOP allows developers to add new features or extend existing functionalities without impacting the entire system. This scalability is essential in today’s fast-paced software development, where requirements change frequently.


Object-Oriented Programming offers numerous benefits over Structured Programming due to its code reusability, modularity, encapsulation, inheritance, and polymorphism. With better organization, easier maintenance, greater flexibility, enhanced reusability, and scalability, OOP has become the preferred approach for modern software development projects.

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