The 29th International Obfuscated C Code Contest (IOCCC) 2025 Winners(ioccc.org)

416 points by matt_d 4 months ago | 94 comments

Official IOCCC page for the 2025 29th International Obfuscated C Code Contest, listing the winning entries.

Diels-grabsch2: Self Hashing C Program (2019)(ioccc.org)

10 points by icwtyjj 7 months ago | 2 comments

International Obfuscated Python Code Competition: Submissions Open(pyobfusc.com)

33 points by juliusgeo 3 years ago | 8 comments

What the QWAC? An EV Certificate all over again(scotthelme.co.uk)

146 points by charleyablaze 3 years ago | 71 comments

COBOL for GCC Development(cobolworx.com)

64 points by pantalaimon 2 years ago | 19 comments

Xmas.c (1988)(udel.edu)

532 points by evah 2 years ago | 91 comments

A personal page dissecting xmas.c, Ian Phillipps' 1988 IOCCC-winning obfuscated C program, explaining how the code works.

The 29th International Obfuscated C Code Contest (IOCCC) 2025 Winners(ioccc.org)

416 points by matt_d 4 months ago | 94 comments

Official IOCCC page for the 2025 29th International Obfuscated C Code Contest, listing the winning entries.

Programmer interrupted: The cost of interruption and context switching (2022)(contextkeeper.io)

468 points by jeron 3 years ago | 220 comments

A ContextKeeper blog post from July 2022 on the cost of interruptions and context switching for programmers.

D4D4(nmichaels.org)

440 points by csense 1 year ago | 52 comments

A blog post investigating mysterious unreachable d4d4 instructions found in disassembled ARM code, which objdump decodes as a relative branch.

Olympus: Correcting the power dynamic of code (2024)(danieltemkin.com)

5 points by jarmiaq 12 days ago | 0 comments

Daniel Temkin's page for Olympus, an esoteric programming language that reframes the programmer-computer power dynamic by having code petition gods.

Competitive Programmer's Handbook (2018) [pdf](cses.fi)

302 points by vinhnx 23 days ago | 79 comments

PDF of the Competitive Programmer's Handbook by Antti Laaksonen (July 2018 draft), a free book on algorithms for programming contests.

The C3 Programming Language(c3-lang.org)

348 points by y1n0 9 months ago | 212 comments

Homepage of the C3 programming language, a C-like systems language, with links to docs, examples, downloads, and current version 0.7.8.