In this chapter, we will examine how to organize our code into small independent units called functions . This allows us to build reusable components that we can call easily from anywhere we wish.
Typically, in software development we start with low-level components, then build on these to create higher and higher level applications. So far, we know how to loop, perform conditional logic, and perform some arithmetic. Now, we examine how to compartmentalize our code into building blocks.
We introduce the stack ; this is a computer science data structure for storing data. ...
