IOCCC 2014 Now In Progress
leob (154345) writes In case you haven't noticed yet, the 23rd International Obfuscated C Code Contest is now in progress. A pre-announcement was made on Twitter in the end of August; the online submission tool is now available until 2014-Oct-19 18:17:16 UTC.
A particular sin() implementation by IBM has always looked scary to me. I found it via an interesting Stack Overflow thread which talks about trigonometric functions.
int printf(char*,...);char q='"',n='\n',b='\\',*s="int printf(char*,...);char q='%c',n='%c%c',b='%c%c',*s=%c%s%c;int main() { printf(s,q,b,'n',b,b,q,s,q,n); return 0; }%c";int main() { printf(s,q,b,'n',b,b,q,s,q,n); return 0; }