Learning GNU C
by Ciaran O'Riordan
The aim of this book is to teach GNU users how to write software in C. It is written primarily as a tutorial for beginners but should be thorough enough to be used as a reference by experience programmers. The basics are layed down in full in the first few chapters.
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by Eric Huss
This guide provides a useful look at the standard C programming language. It will not teach one how to program in C, nor will it attempt to provide the history of C. It is merely a handy reference to the standard C library.
This online wiki book is a quick and easy introduction to the ANSI C programming language. It is written by a novice, and is intended for use by a novice. However, it does assume some familiarity with a programming language.
by J. H. M. Dassen, I. G. Sprinkhuizen-Kuyper - OOPWeb.com
This document describes several techniques and tools for debugging code in C-like languages in a Unix environment. We will also discuss some good coding practices that will diminish the occurrence of certain types of bugs.
by Zed A. Shaw - LCodeTHW
A clear and direct introduction to modern C programming. The purpose of this book is to get you strong enough in C that you'll be able to write your own software in it, or modify someone else's code. The text is not for beginners.