C Unleashed is a very comprehensive book on the ANSI C programming language. This book promotes solid, portable programming using ANSI C, thus benefiting programmers on any platform, including mainframes. Covers the New Standard for C, known as C9X, and includes embedded systems, simulation processing, threading and multiprocessing, digital signal processing, and natural language processing.
This book was overwhelming when I first read it during school days. Could not complete it cover to cover but did read interesting parts like CGI, threading etc. I learnt a lot from this.