What is the purpose of creating functions in the C programming language?

The main purpose of establishing functions in the C language is to achieve code modularity and reusability. By encapsulating a specific function within a function, code can be divided, making the program structure clearer, easier to read, and maintain. In addition, functions can be called in different places, allowing for code reusability, reducing redundancy, and improving development efficiency. Functions can also improve the program’s scalability and maintainability. When requirements change, only the implementation within the function needs to be modified, without having to change the calling code.