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 Simon Long - Raspberry Pi Ltd.
Learn to code with C across 13 packed chapters: Create variables and do arithmetic; Control the flow of your C programs; For loops and case statements; Understand and create functions; Work with arrays and strings; and much more.
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 Tim Bailey - University of Sydney
This textbook is a thorough introduction to the C programming language, with an emphasis on software design and code organisation. The author shows how to apply the language features to build scalable modular software systems.
by Ciaran O'Riordan
The book teaches GNU users how to write software in C. It is written 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.