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Modern C, Third Edition
book

Modern C, Third Edition

by Jens Gustedt
September 2025
Intermediate to advanced
552 pages
14h 5m
English
Manning Publications
Audiobook available
Content preview from Modern C, Third Edition

7 Functions

This chapter covers

  • An introduction to simple functions
  • Working with main
  • Understanding recursion

We have already seen the different means that C offers for conditional execution: execution that, based on a value, chooses one branch of the program over another to continue. The reason for a potential “jump” to another part of the program code (for example, to an else branch) is a run-time decision that depends on run-time data. This section starts with a discussion of unconditional ways to transfer control to other parts of our code: by themselves, they do not require any run-time data to decide where to go.

The code examples we have seen so far often used functions from the C library that provided features we did not want ...

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