IOCCC image by Matt Zucker

The International Obfuscated C Code Contest

IOCCC Rules and Guidelines

Rules and Guidelines

IMPORTANT: Did you read the Important disclaimers about scope and did you check the current IOCCC status?

You may also wish to review the mkiocccentry tool repo, especially when the rules and guidelines are official, to be sure you are using an up to date official mkiocccentry tool set.

Important disclaimers about scope

When the IOCCC status is closed

When the IOCCC status is closed, the rules and guidelines are OUT OF DATE.

They are a very tentative proposal for the next IOCCC that is VERY LIKELY to be updated before the next IOCCC. They are are provided as a tentative hint at what might be used for the next IOCCC.

IMPORTANT: All tentative rules and guidelines are subject to change by the IOCCC judges at ANY time. See both the IOCCC news and the IOCCC Mastodon feed as sometimes the IOCCC judges mention changes there.

When the IOCCC status is pending

When the IOCCC status is pending, the rules and guidelines are tentative.

One might think of them as a beta release for the IOCCC that is about to open.

IMPORTANT: All tentative rules and guidelines are subject to change by the IOCCC judges at any time. See both the IOCCC news and the IOCCC Mastodon feed as sometimes the IOCCC judges mention changes there.

When the IOCCC status is open

When the IOCCC status is open, the rules and guidelines are OFFICIAL.

Unless some significant problem turns up (such as a need to delay in when the IOCCC will close, or some major bug is discovered) they will remain OFFICIAL for this IOCCC.

SUGGESTION: Watch both the IOCCC news and the IOCCC Mastodon feed for the latest news about any changes.

When the IOCCC status is judging

When the IOCCC status is judging, the rules and guidelines are for the current IOCCC that is no longer open for new submissions.

See the IOCCC news as well as the IOCCC Mastodon feed for updates on the IOCCC judging process as well as for the announcement of who won the IOCCC.