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 Sandra Loosemore, at al. - Free Software Foundation, Inc.
The GNU C library, described in this document, defines all of the library functions that are specified by the ISO C standard, as well as additional features specific to POSIX. This manual tells you how to use the facilities of the GNU library.
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 Jens Gustedt - ICube
The book introduces you to the very basics of programming with C, details most principal concepts and features such as control structures, data types, operators and functions, fully explains pointers, performance, reentrancy, atomicity, threads, etc.
C is the precursor for almost all of the popular high-level languages available today. This book represents a comprehensive look at the C programming language and its features. Basic computer literacy is assumed, but no special knowledge is needed.