USING PARAMETERS AND FUNCTION VALUES

[beingchinmay]

Functions are meant to be self-contained. This is good because the entire program can be too complex to understand. If you break the complex program into smaller functions, each function can be set up to work independently. When you work inside a function, you don’t have to worry about anything outside the function. If you create a variable inside a function, that variable dies as soon as you leave the function. This prevents many errors that can otherwise creep into your code.