Chapter 6. Organizing Code with Functions
Although object-oriented programming has shifted attention from functions and toward objects, functions nonetheless remain a central component of any program. Global functions can exist outside of objects and classes, and member functions (sometimes called member methods) exist within a class and do its work.
In this lesson, you will learn
What a function is and what its parts are
How to declare and define functions
How to pass parameters into functions
How to return a value from a function
You’ll start with global functions in this lesson, and in Lesson 10, “Classes and Objects,” you’ll see how functions work from within classes and objects as well.
What Is a Function?
A function is, in effect, a subprogram that ...
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