Procedure-oriented programming (POP) is a programming paradigm that focuses on breaking a program down into a series of procedures or functions. These procedures are self-contained units of code that perform specific tasks and can be called from other parts of the program.

In POP, the primary focus is on the functions and procedures that make up the program, rather than the data that is being processed. The program is structured as a series of steps, or procedures, that are executed in a specific order to achieve the desired result.

POP has a number of advantages:

1. Modularity: Functions and procedures can be defined independently of each other, which makes it easy to divide a program into smaller, more manageable units of code.
2. Reusability: Functions and procedures can be reused in different parts of a program or in different programs, which helps to reduce code duplication and increase efficiency.
3. Debugging: Functions and procedures are self-contained units of code, which makes it easier to identify and fix errors in a program.
4. Maintainability: Modular code is easier to maintain and modify because changes can be made to individual functions or procedures without affecting the rest of the program.

Overall, POP is a useful programming paradigm that can help you to write efficient, reusable, and maintainable code. However, it has some limitations, such as a lack of support for object-oriented programming (OOP) concepts, which can make it less suitable for large or complex programs.