© Will Briggs 2021
W. BriggsC++20 for Lazy Programmershttps://doi.org/10.1007/978-1-4842-6306-8_7

7. Functions

Will Briggs1  
(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 and give it its inputs, and it’ll provide the result (see Figure 7-1).
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Figure 7-1

Structure of a “makeCandyBarmachine

C++ has “machines” too (called “functions”): ...

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