POP and OOP

Difference between POP and OOP

Subject of Difference	Procedure Oriented Programming (POP)	No.	Object Oriented Programming (OOP)
Problem decomposition	Decompose the main problem in small parts called functions.	01	Decompose the main problem in small parts called objects.
Connections of parts	Connects small parts of the program by passing parameters & using operating system.	02	Connects small parts of the program by passing messages.
Emphasizing	Emphasizes on functions.	03	Emphasizes on data.
Use of data	In large programs, most functions use global data.	04	Each object controls data under it.
Passing of data	Data may get passed from one function to another.	05	Data never get passed from one object to another.
Security of data	Appropriate & effective techniques are unavailable to secure the data.	06	Data stay secured as no external function can use data of an object.
Modification of program	Modification of a completed program is very difficult and it may affect the whole program.	07	Modifications are easy as objects stay independent to declare and define.
Designing approach	Employs top-down approach for designing programs.	08	Employs bottom-up approach for designing.
Data identification	In large programs, it is very difficult to find what data has been used by which function.	09	As data and functions stay close, it is easy to identify data.
Used languages	Languages like C, FORTRAN, COBOL etc. use POP.	10	Languages like C++, JAVA etc. use OOP.

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