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The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984.
IOCCC purpose:
* 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. :-)
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
Good news @everyone, :nerd:
We’re planning to announce the winners of IOCCC29 on the Our Favorite Universe YouTube Channel (@OurFavoriteUniverse@www.youtube.com) on June 6, 2026, at 11:00 a.m. Pacific Time.
Here is the official live show YouTube link:
https://www.youtube.com/live/MoWCwZx1Swc
Please click the ((Subscribe)) button.
It is not really a subscription, and it is free. The ((Subscribe)) button simply tells YouTube that you enjoy Our Favorite Universe YouTube Channel.
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
We have **tentatively scheduled** announce the winners of **IOCCC29** on the Our Favorite Universe ( @OurFavoriteUniverse@www.youtube.com ) YouTube Channel for 2026 June 06 10:00 (10AM) Pacific.
The winners of **IOCCC29** will be released to https://www.ioccc.org at the end of the show.
Please **((Subscribe))** to the YouTube Channel, and click the notification bell :bell: to be notified when the show is formally scheduled, w/Q&A on Discord https://discord.gg/Wa42Qujwnw afterwards.
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
Part 2 of 2
We have made great progress on getting ready to present the winning entries for IOCCC29. Since April 5 we made a number of important changes to the IOCCC winner repo (https://github.com/ioccc-src/winner) that is used to create the www.ioccc.org website. See the git log for details.
Our producer has also made substantial progress on getting ready the Our Favorite Universe YouTube channel @OurFavoriteUniverse@www.youtube.com - the show & release the source code in May 2026.
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
Thank you very much for the feedback we received regarding the audio problems with our recent Patreon-recorded videos. With the help of our producer, we made an effort to improve the sound quality.
Please watch/listen to: https://www.patreon.com/posts/ioccc29-update-w-157768321
Part 1 of 2
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
We are making good process on both the IOCCC29 2025 web site directory, as we as building the content of the Our Favorite Universe YouTube channel show. Stay tuned for further updates!
For more information please watch: https://www.patreon.com/posts/progress-report-156933057
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
Hello,
We are making good progress on creating the assets needed to present the winning entries of IOCCC29 on the Our Favorite Universe YouTube channel (@OurFavoriteUniverse@www.youtube.com), as well as starting the work to convert submission directories into the www.ioccc.org website form.
Please stay tuned for further updates!
For more details watch:
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
Hello,
We are working on materials we are using for the Our Favorite Universe live YouTube show, where the "assets" are being collected for each submission that will be declared a winner of IOCCC29.
Be sure you are "subscribed" to the Our Favorite Universe YouTube channel, @OurFavoriteUniverse@www.youtube.com , and click the notification bell 🛎️ so you can be notified as to when the show will "go live".
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
We are in the process of converting the submissions to IOCCC29 into winning entry form, as well as to create the items needed to present the winning entries during a live show won by the Our Favorite Universe YouTube channel.
Please subscribe to the Our Favorite Universe YouTube channel: https://www.youtube.com/ourfavoriteuniverse and click the notification bell so you can be informed when we schedule the show.
p.s.: Watch https://www.patreon.com/posts/ioccc29-judging-155384007
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
Tomorrow, 2026 Apr 2, Landon will begin the long process of converting submissions into winning entry form. This includes improving Makefiles, try.sh, & README.md files. Then we will begin to create the content for the Our Favorite Universe YouTube show to present the winners. Last, we verify were ready to git push the 2025 directory to the website.
ETA to announcing the winners: 1 month. Sorry (tm Canada 🇨🇦) to the impatient: your wait will be well worth it.
Go Artemis!
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)
Happy April Fools’ Day: The rest is NOT an April Fools’ joke:
The IOCCC judges have paused their work today to watch what we hope will be a successful Artemis II launch and successful orbit insertion.
We are beginning to do the formal write-ups of the final round submissions. We have made some adjustments to the set of submissions based on this work. We have a better idea of the set that might win IOCCC29.
The International Obfuscated C Code Contest (IOCCC) is the Internet's oldest contest that started in 1984. IOCCC purpose: * 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. :-)