國際C語言混亂代碼大賽（IOCCC, The International Obfuscated C Code Contest）是一項國際編程賽事，從1984年開始，每年舉辦一次（1997年、1999年、2002年、2003年和2006年例外）。目的是寫出最有創意的最讓人難以理解的C語言代碼。?

Best of Show獎作品，點擊查看大圖

第20屆（2011年度）IOCCC獲獎情況：

Most devolving

Philip Blakely(UK) - Life/reverse life

Best data utility

Szabolcs Borsanyi(Germany) - Bar graph plotter

Most self deprecating

David Lowe(USA) - Neural network classifier

Best ball

Peter Eastman(USA) - Bouncing Ball in ANSI Graphics

Most useful

Kimmo Fredriksson(Finland) - Aproximate grep

Most artistic

Uri Goren(Israel) - Magritte tribute

Best self documenting program

Hou Qiming(China) - Scientific calculator

Best one liner

Taketo Konno(Japan) - QWERTY keyboard position identifer

Best solved puzzle

Shinichiro Hamaji(Japan) - Paint by number puzzle

Best solved puzzle

bsoup(Japan) - Paint by number puzzle

Most surprisingly portable

Gregor Richards(USA) - JIT dc

Best non-chess game

Oscar Toledo G.(Mexico) - Dual player tank shooter game

Most sound

Daniel Vik(USA) - Tracker player

Most shiny

Matt Zucker(USA) - Text raytracing

Best of Show - Most Shrinkable

Don Yang(USA) - Downsampler with 3 embeded programs

附：所有得獎代碼下載地址