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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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 Mark Burgess, Ron Hale-Evans - Free Software Foundation
This book is a tutorial for the computer programming language C. You should have some basic computer literacy: to be able to run a program, edit a text file, etc. The tutorial introduces basic ideas in a logical order and progresses steadily.
by Al Aho, Jeff Ullman - W. H. Freeman
Aho and Ullman have created a C version of their groundbreaking text. This book combines the theoretical foundations of computing with essential discrete mathematics. It follows the same organizations, with all examples and exercises in C.
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.