IOCCC image by Matt Zucker

The International Obfuscated C Code Contest

How to contact the IOCCC

WAIT!!! - Before you send that email

If you are trying to:

Instead of sending us email, PLEASE consider using the GitHub pull request process against the master branch of the ioccc-src/winner repo. See the FAQ on “submitting a pull request”.

If you are trying to:

In general, unless you have a fix, if you want to report something, you should instead first look at the IOCCC issues to see if the problem has already been reported. If it has been reported, feel free to add a comment to the issue. Otherwise, if you do not see the same issue reported, then feel free to open a new IOCCC issue.

If you are trying to:

Those FAQ entries will help guide you on how to make public comments and suggestion in the relevant places.

See the above FAQ entries for more details.

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Try Mastodon

Please follow the IOCCC on Mastodon

We use Mastodon to make minor announcements, in addition announcing major events such as the opening of a new IOCCC, or who won.

See the FAQ on “Mastodon” for more information on Mastodon.

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If you really need to send email the IOCCC judges

Did you look at the above section?

If you must contact the IOCCC judges by email, then please send email to: q.YYYY@ioccc.org

IMPORTANT: The YYYY in the above email address MUST be changed to the current 4 digit year!

You MUST include the following two words (separated by a space) in the subject of your email, otherwise the email will be rejected:

    IOCCC YYYY

IMPORTANT: The YYYY in the above email address MUST be changed to the current 4 digit year!


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