Problem Decomposition-Modularization

Solutions for complex real-world problems are nevertheless going to be simple.Essentially, you should divide your proposed solution into subtasks. This is the idea of decomposition. Modularization takes it one step further by keeping the subtasks as independent as possible. These subtasks are known as modules.

A module is a named, self-contained block of statements that carries out some specific, well-defined task. The modules should have minimal interaction among them so that one module does not affect another.

Modularization is the process of breaking down a complex system, program, or task into smaller, self-contained units or modules. Each module is designed to handle a specific function or a related set of functionalities. These modules can be developed, tested, and maintained independently, yet they integrate seamlessly to achieve the desired system behavior.

Advantages of Modularization

1. Improved Maintainability: Easier to isolate and fix bugs or update specific parts of the system without affecting others.
2. Enhanced Reusability: Modules can often be reused across multiple projects or within the same project, saving development time.
3. Simplified Development: Teams can work on different modules simultaneously, speeding up the development process.
4. Better Understanding: Modular systems are easier to understand and document because they focus on well-defined tasks.
5. Scalability: New features or functionalities can be added as new modules without disturbing the existing ones.
6. Testing and Debugging: Each module can be tested independently, making the debugging process more manageable.
7. Encapsulation: Hides the implementation details within a module, ensuring that changes to the internal workings of a module do not affect other modules.

The portion of the function code that implements its functionality is known as function definition. For built-in functions, the definitions are provided by the interpreter itself. But, with user-defined functions, it is the duty of the programmer to define them. When we want to use the functionality provided by a function, we access it (technically known as a function call) by its name.