Learn C The Hard Way
by Zed A. Shaw
Publisher: LCodeTHW 2011
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, but for people who have at least read Learn Python The Hard Way or know one other programming language.
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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 A. D. Marshall - Cardiff University
This book is guide to UNIX software development in C for professional programmers and students. It focuses on the UNIX system call interface, the programming interface between the UNIX Kernel and applications running in the UNIX environment.
by K. Joseph Wesley, R. Rajesh Jeba Anbiah
This is an intermediate to advanced C programming book writen for C lovers, students, programmers, and other enthusiasts. The book is written to open many secrets of C, it alos introduces various approaches to solve different problems.
by Pieter Hartel, Henk Muller - Addison-Wesley
The book teaches how to program in C, assuming that the student has already learnt how to formulate algorithms in a functional style. The student will become a better C programmer, capable of writing programs that are easier to maintain.