Defining Functions

Segmenting a program into manageable chunks of code is fundamental to programming in every language. A function is a basic building block in C++ programs. So far every example has had one function, main(), and that has typically used functions from the Standard Library. This chapter is all about defining your own functions with names that you choose.

In this chapter you will learn:

  • What a function is, and why you should segment your programs into functions
  • How to declare and define functions
  • How data is passed to a function and how a function can return a value
  • What “pass-by-value” means
  • How specifying a parameter ...

Get Beginning C++ now with O’Reilly online learning.

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