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The International Obfuscated C Code Contest (abbr. IOCCC) is a programming contest for the most creatively obfuscated C code

held annually since 1984 (with the exception of 1997, 1999, 2002 and 2003). There are many winning entries each year, and each entry gets a category like "Worst Abuse of the C Preprocessor" or "Most Erratic Behavior".

The IOCCC was started by Landon Curt Noll and Larry Bassel . They were talking together about the horrible code it was their jobs to maintain. They decided to hold a contest for the worst possible C code.

An example entry would be [1]:

#define _ -F<00||--F-OO--; int F=00,OO=00;main(){F_OO();printf("%1.3f\n",4.*-F/OO/OO);}F_OO() { _-_-_-_ _-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_ _-_-_-_ }

This program calculates pi by looking at its own area; a more accurate value can be received by using a bigger program.

Some ways in which contributions are notable include:

The appearance of the source code, which may resemble images, text, etc.
Preprocessor redefinitions to make code harder to read
Self-modifying code

External link

IOCCC web site

Programming Public domain software Satire

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