What are the best web sites for C programming?

kind of sites where you can research for source codes and get variety of sources.. and topics in C as well.. i am looking for site that is clean and spam-free(is that what you call it?) .... i am working for a project and it needs lots of styling ang coding, you know... do tell me if you know... thanks...

What are the best web sites for C programming?
http://www.cprogramming.com/tutorial.htm...


http://www.learn-programming.za.net/prog...


http://www.cyberdiem.com/vin/tutorials.h...


http://www.obsolyte.com/learnc/


http://www.phys.unsw.edu.au/~mcba/c001.h...


http://www.cs.cf.ac.uk/Dave/C/


http://www.phim.unibe.ch/comp_doc/c_manu...


http://www.paulgriffiths.net/program/c/


http://people.scs.fsu.edu/~burkardt/c_sr...