This text is designed for beginning to intermediate level users who need a quick, easy-to-use C reference. As a tutorial for beginners and a reference for experienced programmers, it shows code techniques and the thoughts behind them. The accompanying disk features source code and executable versions of the example programs, shows how to use the C language to solve realworld programming problems, and discusses techniques such as finite state machines, GREP, bit twiddling, tokenized parsers and mini-interpreters.