ANSI C Yacc grammar
Including Lex tokenizer.
This site features tips, tutorials and information for C (and C++) students and programmers.
C Language forum at Tek-Tips
C Language technical support forums and mutual help system for computer professionals. Selling and recruiting forbidden.
Articles about C/C++ programming and C function libraries for calendar date conversion and multidimensional dynamic array allocation; links.
Area for C programming technical support, help with projects by qualified experts.
An assortment of links with some pointers to tools and papers you probably haven't seen before. Needs much better organization.
Previous IOCCC Winners
Past winners of The International Obfuscated C Code contest
Softpanorama University Annotated C Webliography
A collection of links and information.