This article is from the alt.comp.lang.learn.c-c++ Frequently Asked Questions. Compiled by Sunil Rao firstname.lastname@example.org.
http://www.lysator.liu.se/c/ is an excellent resource for C, containing a number of extremely useful links and pointers.
For beginners to C (and C++), Jack Klein has put up an excellent page with tips, suggestions and expanded answers to a number of commonly asked beginners' questions. http://home.att.net/~jackklein/c/c_main.html
The Comeau Computing web site features several highly informative and useful resource pages, including http://www.comeaucomputing.com/resources/litsuggs.html http://www.comeaucomputing.com/faqs/cppfaq.html
Steve Summit has archived some of his longer and more informative Usenet posts at http://www.eskimo.com/~scs/readings/index2.html
Check out the C++ Virtual Library for some useful C++ links. http://www.desy.de/user/projects/C++.html
You may wish to look at the C Language Online Journal at http://www.cs.wustl.edu/~jxh/CLOJ/
For some useful code snippets (some portable; others not), check out Bob Stout's SNIPPETS archive at http://www.snippets.org/
Karim Ratib's well-indexed code page has links to many useful resources. http://www.iro.umontreal.ca/~ratib/code Martin Leslie's C Programming reference site is at http://www.gator.net/~garyg/C/c.html
Jamie Blustein's C Programming Language resources are at http://www.csd.uwo.ca/~jamie/.Refs/C-refs.html
Scott McMahan's C Programmer's Notebook, which discusses a number of issues C programmers encounter as their experience grows, is at http://www.skwc.com/essent/prognotebook.html
Some questions relating to what standard C is all about are answered at http://lglwww.epfl.ch/~wolf/c/
Also, check out The Mining Company's C/C++ site, http://cplus.miningco.com/ Jon Morris Smith's C++ resources directory, http://www.cs.bham.ac.uk/~jdm/cpp.html
Robert Davies' list of online C++ references, http://nz.com/webnz/robert/cpp_site.html
The #C++ site, http://www.cl.ais.net/morph/c++/main.html
and Simo Salminen's Programmers' Oasis C and C++ page. http://www.utu.fi/~sisasa/oasis/oasis-cc++.html