The International Obfuscated C Code Contest (abbreviated IOCCC) is a programming contest for the most creatively obfuscated C code. It was held annually between 1984 and 1996, and thereafter in 1998, 2000, 2001, 2004, 2005, 2006 and 2011.
The most recent competition started in 2012. The winning code for the 18th and 19th contests, held in 2005 and 2006, was released in November 2011.
Prior to 2004, entries were submitted by email. In 2004, for the 17th IOCCC, the competition switched to using a web-based submission process.
Entries are evaluated anonymously by a panel of judges. The jud...