Logo by winner Matt Zucker

The 25^th IOCCC will be open from 2017-Dec-29 05:38:51 UTC to 2018-Feb-28 05:29:15 UTC.

Please see the following news items.

Goals of the Contest

• Obfuscate: tr.v. -cated, -cating, -cates.
  1. 1. To render obscure.
     2. To darken.
  2. To confuse: his emotions obfuscated his judgment.
     [LLat. obfuscare, to darken : ob(intensive) + Lat. fuscare,
     to darken < fuscus, dark.] -obfuscation n. obfuscatory adj
     
  
  
• The IOCCC:
  • To write the most Obscure/Obfuscated C program within the rules.
  • To show the importance of programming style, in an ironic way.
  • To stress C compilers with unusual code.
  • To illustrate some of the subtleties of the C language.
  • To provide a safe forum for poor C code. :-)

IOCCC news

• 2017-12-29
  • The 25^th IOCCC will be open from 2017-Dec-29 05:38:51 UTC to 2018-Feb-28 05:29:15 UTC.
  • The submission tool will be available on 2018-Jan-15 09:09:09 UTC.
  • Draft Rules, Guidelines and IOCCC size tool are available.
  
  
• 2016-10-29
  • There will not be an IOCCC competition in 2016.
  • The IOCCC is on hiatus until mid 2017.
  
  
• 2016-04-07
  • The source code for the winners of the 24^th IOCCC has been released.
  
  
• 2015-10-25
  • The winners of the 24^th IOCCC have been announced. Congratulations!
  
  
• 2015-10-10
  • The 24^th IOCCC is now closed and Judging has commenced.
  
  
• 2015-07-19
  • Minor edits to the draft Guidelines have been made.
  
  
• 2015-07-14
  • The source code for the winners of the 23^rd IOCCC has been released.
  
  
• 2015-07-13
  • The 24^th IOCCC will be open from 2015-Jul-08 09:10:11.12 +/- .13 seconds UTC to 2015-Oct-10 10:10:10.10 +/- .10 seconds UTC.
  • The submission tool will be available on 2015-Sep-09 09:09:09 UTC.
  • Draft Rules, Guidelines and IOCCC size tool are available.
  
  
• 2014-10-27
  • The winners of the 23^rd IOCCC have been announced. Congratulations!
  
  
• 2014-10-20
  • The 23^rd IOCCC is now closed and Judging has commenced.
  
  
• 2014-09-23
  • A critical patch to the IOCCC size tool that fixes // comments has been made. Thanks goes to Matt Zucker for discovering this bug.
  • Be sure that you use version 2014-09-23-v19 (or greater) of the IOCCC size tool when you submit your IOCCC entries!
  • If you submitted an entry under Version 2014-09-04-v18 of the size tool, recheck your code using 2014-09-23-v19. If needed, modify your previously submitted entry.
  
  
• 2014-09-15
  • The final Rules, Guidelines and IOCCC size tool are now available.
  • The 23^rd IOCCC online submission tool is now available.
  
  

Older news has been archived, but is not currently available

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