Learning how to use functions means the coder will know how to work more efficiently. Not only that, but the code will be easier to read, and that is a boon if you’re working in a team.

Unfortunately, C does not explicitly support modular programming. The archetypal modular programming language is Nicklaus Wirth’s Modula-2 (and -3). A modular language, such as Modula, has syntax for ...