At the most basic level, a function has parameters, has code to manipulate the parameters, and returns a value. C++ gives you several ways to determine these three aspects. In the following section, we will cover those parts of a C++ function from the left to the right of the declaration. Functions can also be templated, but this will be left to a later section.
Defining C++ functions
Declaring and defining functions
A function must be defined exactly once, but through overloading, you can have many functions with the same name that differ by their parameters. Code that uses a function has to have access to the name of the function, and so it needs to have access to either the function definition (for example, the function...
