OOP vs POP: Understanding the Key Differences

OOP vs POP: Understanding the Key Differences

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Vikram Singh
Assistant Manager - Content
Updated on Oct 25, 2023 09:46 IST

OOP is a fundamental programming concept that developer uses for binding data and functions together using the concept of object and class, whereas POP it is a step-by-step approach to decomposing a task into a set of variables and routines using a set of instructions. In this article, we will learn the key differences between OOP and POP.


Different programming languages uses different approaches to work. Programming languages like C++, JAVA, C# use classes and objects for creating the model, whereas programming languages like C, and FORTRAN uses step by step approach for breaking down a task into collection of routine and variables. Both methods have their advantages as well as disadvantage. In this article we will learn the difference between Object Oriented Programming and Procedure Oriented Programming.

Also Read: Difference Between C and C++

Table of Content

Difference Between OOP and POP

Parameter OOP POP
Definition This type of programming language uses objects and classes for creating models.  This programming language uses a step-by-step approach for breaking down a task into a collection of routines and variables by following a sequence of instructions.
Abbreviation Object-Oriented Programming Procedure Oriented Programming
Approach Bottom-up approach Top-down approach
Polymorphism Method overloading and overriding are used in OOP to achieve polymorphism. It doesn’t support polymorphism.
Inheritance Supports Do not support
Code Reusability Supports  Don’t support
Security Data handling is possible in OOP due to programming. It is less secure than OOP.
Problem-Solving Used for solving big problems. Not suitable for big problems.
Example C++, JAVA, C#, .NET C, FORTRAN

What is OOP

Object-Oriented Programming (OOP) is a fundamental programming concept that developer uses for binding data and functions together using the concept of object and class.

  • It helps the programmer to control and access the data.
  • It also improves the code readability and reusability.

Concepts used in OOP:

  • Abstraction: Abstraction is the property due to which non-essential units are not visible to the user. It is the process of identifying only the essential characteristics of an object while ignoring irrelevant details. 
  • Encapsulation: Encapsulation means wrapping up data within a single unit. It is a mechanism that binds together the code and data it manipulates. It protects the data from being accessed by using the code. In encapsulation, data or variables of a class are hidden from other classes.
  • Inheritance: Inheritance means one entity acquiring properties or attributes of another entity.
  • Polymorphism: Polymorphism is one of the essential pillars of Object-Oriented Programming concepts. It depicts the representation of one entity in multiple forms, such as method overloading, constructor overloading, etc. 

Advantages and Disadvantages of OOP

  • Maintenance of the Code: Maintaining and modifying the current program is very easy and time-saving.
  • Redundancy of Data: OOP allows users to write a common class definition that can be used further.
  • Security: It keeps security while offering the data.
  • Size and Speed: OOP applications are usually large in size, which makes them slower than other applications.
  • Difficult to Grasp: OOP has difficulty comprehending how objects, classes, methods, and actions interact.
  • Learning OOP takes time.

What is POP

Procedure-Oriented Programming (POP) is a programming method that focuses on the functions or procedures needed for computation rather than the data itself. In simple terms, it is a step-by-step approach to decomposing a task into a set of variables and routines using a set of instructions.

Advantages and Disadvantages of POP 

  • It has the ability to grasp the program very easily.
    • Follows the top-down approach that makes the flow very simple.
  • Allows to write the program without creating objects or classes.
  • High risk of security as data is exposed to the entire software.
  • Difficult to correlate with real-world objects.

Key Difference Between OOP and POP

  • The main purpose of OOP is on Data Security, whereas the main focus of POP is on how to get the task done. 
  • OOP is Object-Oriented Programming, and POP is Procedure-Oriented Programming.
  • OOP has three accessing modes: “Public”, “Private”, and “Protected,” while POP has no specific accessing modes.
  • POP doesn’t support inheritance, while OOP supports inheritance that allows using attributes and functions of other classes by inheriting.
  • In OOP, the virtual function supports polymorphism, whereas there is no concept of virtual function in POP. 


In this article, we have learned:

  • Key Differences between Object-Oriented Programming and Procedure Oriented Programming.
  • Advantages and Disadvantages of OOP.
  • Advantages and Disadvantages of POP.

Hope you will like the article.


What is Object-Oriented Programming or OOP?

Object-Oriented Programming or OOP is a programming paradigm based on the concept of objects, which can contain data and code: data in the form of fields (often known as attributes or properties), and code, in the form of procedures (often known as methods). OOP focuses on the objects that developers want to manipulate rather than the logic required to manipulate them. This approach is useful for large, complex, and actively updated or maintained software.

What is Procedure-Oriented Programming (POP)?

Procedure-Oriented Programming (POP) is a programming paradigm centered around procedures or routines. It involves writing a set of instructions to complete a task and organizing these instructions into groups known as functions. In POP, the primary focus is on functions rather than the data that is used by the functions. POP is generally used for small, simple, and less data-driven tasks.

How does OOP differ from POP in terms of program structure?

In OOP, programs are organized around objects and data rather than actions and logic. Here, data is hidden and cannot be accessed by external functions. In contrast, POP is organized around functions and procedures, focusing more on the actions that happen in the program. Data is typically not hidden and can be freely accessed throughout the program.

Can you compare OOP and POP based on their approach to data and functions?

OOP encapsulates the data, i.e. the data structures (objects) carry both data and functions. In OOP, data manipulation is implicit within the object's methods. POP, on the other hand, separates data and functions: data structures are typically separate from the functions that act on them, and data manipulation is explicit and visible in the code.

In what scenarios would POP be more advantageous than OOP?

POP might be more advantageous in scenarios where simplicity and straightforwardness are key. Small, simple scripts or programs where the overhead of objects and classes is not justified can benefit from the procedural approach. It's also easier to learn and understand, making it suitable for beginners or for use in educational contexts.

About the Author
Vikram Singh
Assistant Manager - Content

Vikram has a Postgraduate degree in Applied Mathematics, with a keen interest in Data Science and Machine Learning. He has experience of 2+ years in content creation in Mathematics, Statistics, Data Science, and Mac... Read Full Bio