© Will Briggs 2019
Will BriggsC++ for Lazy Programmershttps://doi.org/10.1007/978-1-4842-5187-4_7

7.  Functions

Will Briggs
(1)
Lynchburg, VA, USA
 
In this chapter, we get the number one way to not get lost in pages of code till your eyes go blurry: functions.

Functions that return values

Consider how things are done in a candy factory. It has machines to make things we want. Each machine has things it needs piped in, and the thing it produces piped out. Want a candy bar? Activate the machine, give it its inputs, and it’ll provide the result (see Figure 7-1).
A477913_1_En_7_Fig1_HTML.png
Figure 7-1
Structure of a “makeCandyBar” machine
We have “machines” too (called “functions”): ...

Get C++ for Lazy Programmers: Quick, Easy, and Fun C++ for Beginners now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.