Structured Programming

[stylin]

So it's more of a way of accessing a mathematical equation?

It's a way of accessing any information from a routine. For example, in a string concatenation routine, you can return the result of the concatenation. In an open file routine, you can return the file handle of the open file. Whatever information is pertinent to the result of the function being executed you can return. In other words, you use functions (as opposed to subs) when you need some kind of information from the routine after it is finished executing.