2004 IOCCC Winners Source Code Released

Langly writes "The IOCCC have finally released their source code for 2004. My thoughts goes out to the poor guys that actually wrote this code. Reader discretion is advised." Every time I see an obfuscated code contest, I wonder if 'Winner' is the right word to describe the victor ;)

Comments

frist?

[Anonymous Coward]

void main(void) {
printf("frist prost");
}

Re:frist?

[Anonymous Coward]

You succeed, but also half fail it:

frist_prost.c: In function `main':
frist_prost.c:1: warning: return type of `main' is not `int'

Re:frist?

[Anonymous Coward]

Various standard C library functions are known to the compiler, and the compiler is allowed to optimise them. For example, here's a little trick. If you compile:

printf("Hello\n");

With max opt, GCC will convert it into:

puts("Hello");

How cool is that? You've saved one byte in your string and called a much quicker/smaller function!

Re:frist?

[gorre]

Arrggh, main returns an int god dammit!

Re:frist?

[aled]

So what? it's just a warning. Much the better to ofuscation.

Re:frist?

[aled]

The objetive is ofuscation, not efficience.

Re:frist?

[Tony Hoyle]

It also doesn't take a void argument.

Re:frist?

[quigonn]

gcc -std=c99 -o frist_prost frist_prost.c works perfectly without warning. By default, gcc still interprets the code as C89.

Re:frist?

[pchan-]

It also doesn't take a void argument.

sure it does. int main(void) is completely legitimate. there's no reason why your program needs to take in commandline arguments. the loader will probably pass them to you anyway, but you don't need to acknowledge their existance.

$ cat x.c
#include <stdio.h>

int main(void)
{
printf("sweet\n");
return 0;
}

$ gcc -Wall -std=c99 x.c
$

Re:frist?

[Kusunose]

No. main() can take argc, argv pair: int main(int argc, char *argv[])
or no arguments: int main(void).

Re:frist?

[runderwo]

Obviously you are calling the printf() in the C standard library, since -lc is implied when you compile a C program. If your standard library does not provide printf(), it is broken.

Re:frist?

[Anonymous Coward]

gcc -std=c99 -o frist_prost frist_prost.c works perfectly without warning. By default, gcc still interprets the code as C89.

This has nothing to do with C89 or C99. The only standard-compliant forms of main are those that return 'int', regardless of which C standard you are talking about. Also, the -std argument to gcc is not sufficient to make it a standard C compiler. RTFM.

The -ansi option does not cause non-ISO programs to be rejected gratuitously. For that, -pedantic is required in addition to -ansi. ...
The -std options specifying some version of ISO C have the same effects as -ansi, except that features that were not in ISO C90 but are in the specified version (for example, // comments and the inline keyword in ISO C99) are not disabled.

Re:frist?

[Anonymous Coward]

You need to add the -pedantic argument for this to be very meaningful. From the gcc manual:

-pedantic
Issue all the warnings demanded by strict ISO C and ISO C++; reject all programs that use forbidden extensions, and some other programs that do not follow ISO C and ISO C++. For ISO C, follows the version of the ISO C standard specified by any -std option used.

Valid ISO C and ISO C++ programs should compile properly with or without this option (though a rare few will require -ansi or a -std option specifying the required version of ISO C). However, without this option, certain GNU extensions and traditional C and C++ features are supported as well. With this option, they are rejected.

The gcc manual also says:

Some users try to use -pedantic to check programs for strict ISO C conformance. They soon find that it does not do quite what they want: it finds some non-ISO practices, but not all--only those for which ISO C requires a diagnostic, and some others for which diagnostics have been added.

A feature to report any failure to conform to ISO C might be useful in some instances, but would require considerable additional work and would be quite different from -pedantic. We don't have plans to support such a feature in the near future.

So this is not a perfect way of checking compliance, but it is usually fairly good.

Re:frist?

[BreadMan]

For GCC, at least, the entry point as far as Linux is concerned is _init, defined in /usr/lib/crti.o.

_init opens the standard file descriptors, gathers the command line arguments and does a but of housekeeping before calling main, your program's entry point. GCC links to this by default; but you can change this if necessary, for instance an embedded project running without an OS would need very different initialization code, and for that matter it could define the entry point of the application as something other than main().

If you want to see what GCC is doing for a compilation, try

gcc =### x.c

And you'll be able to see what gcc passes to the underlying tools to pre-process, compile, assemble and link.

Re:frist?

[Anonymous Coward]

Your post was only six words long, and you fucked up three of them.

Objective.
Obfuscation.
Efficiency.

Re:frist?

[LanceUppercut]

Firstly, 'void main' is illegal. 'main' is always 'int'. Secondly, calling a variadic function ('printf' in this case) without declaring it first is illegal.

Re:frist?

[LanceUppercut]

Read it yourself, lamer. You don't need to declare an ordinary (non-variadic) functions. Variadic functions (as 'printf') need to be declared first. Otherwise, the behavior is undefined.

Re:frist?

[LanceUppercut]

Well, it a matter of defining "illegal". The program is well-formed, but produces UB. That's what I meant by "illegal". Whether it will display a diagnostic is a QoI issue.

Re:frist?

[LanceUppercut]

Wrong. C89/C90 (6.3.2.2) and C99 (6.5.2.2/6) clearly and explicitly state that if a function has a prototype that ends with an ellipsis (a variadic function) then calling this function without declaring it first leads to undefined behavior. Take the document and read it, if you know how to read. End of discussion.

Re:frist?

[LanceUppercut]

Would you please clarify? What "it can" are talking about and what is not exactly declared?

Re:frist?

[LanceUppercut]

I don't understand what are you trying to say here. The standard requires that the function is declared in the same translation unit _before_ (i.e. above the point where) it is called. This requirement is violated by the code in question.

Re:frist?

[LanceUppercut]

Well, that's exactly what we have in this case. This translation unit neither declares nor defines 'printf'. Which immediately means that calling it without a prototupe leads to undefined behavior.

Re:frist?

[dtfinch]

I'm sure it was intentional.

Re:frist?

[Mr Z]

Actually, the code does not work fine on some compilers.

Re:frist?

[Mr Z]

errrr... I don't think there's anything in ANSI or ISO C that defines _start. When you say "conforming," do you mean "conforming to my system's ABI"?

--Joe

Re:frist?

[BreadMan]

>> When you say "conforming," do you mean "conforming to my system's ABI"?

Good point. :-) What happens before main() is left to the implementation, so it is a matter of the system's ABI as to the entry point's actual name. IIRC, Windows expects _mainCRTStartup as the entry point, which then calls main().

obfuscated server

[LiquidCoooled]

The code running on the webserver must be AMAZING.
Its so obfuscated that I cant even see it!

ahhhhhh its finally shown up.

Doesnt bode well though.

ouch

[mpost4]

I would hate to have to be the one that either updates that code or has to read it. Some nice ASCII art in there, I am not brave enough to test to see if the programs do what they say they do. I went to the spoiler page so I could get the synopsis of them. That code would be a good Halloween costume it is just scary.

Re:ouch

[ajs]

I'm so tired of this. Every time the IOCCC winners are announced someone has to go off on how unmaintainable the code is.

For those who are unable to grasp the point, I'll say it slowly: this code is written by people who understand C well enough to twist it into any shape they please. Of course, they could write clean, maintainable code, but then they would LOSE the competition. The goal is to write obfuscated code.

The IOCCC is an expression of source-code as art in a compettitive forum. If that isn't your cup of tea, don't hurt your brain by reading the submissions.

Re:ouch

[Artifakt]

We hope the contest obfuscation is all intentional. Personally, if I write obfuscated C it's mostly inadvertent, and if I write obfuscated C++ it's the PHB's fault.

Re:ouch

[Megaweapon]

Perhaps the person would rather try to enter a "Maintainable Brainfuck" competition. The true beauty of the IOCCC is the fact that it will hurt your brain to comprehend it.

Article text?

[Moby Cock]

Man, /.'ed already. Anybody manage to grab the text? Please?

Re:Article text?

[RPI Geek]

Unfortunately it's really just a list of the entries. I couldn't even get to the challenge description before it caught fire.

Big deal

[Anonymous Coward]

When I was learning programming, I would obfuscate code so bad that even the compiler couldn't understand it, let alone humans...

Re:Big deal

[jonadab]

> When I was learning programming, I would obfuscate code so bad that even
> the compiler couldn't understand it, let alone humans...

The trick is to write the code so that the compiler understands it in a
completely different way from any human reader, so that, upon seeing the
output, the poor human goes, "How does it DO that? This code shouldn't
get that result... heck, it shouldn't even compile!"

Re:Big deal

[UserGoogol]

No, the trick is to write code which human readers interpret in one way and the compiler interprets in a completely different way. Obfusteganography, if you will.

"Hey! Why's that Hello World program running a four function calculator?"

That would be really cool, in a stupid sort of way.

great performance

[fizze]

wow, the early /. effect seems to be quite popular these days. no comments by now, and almost slashdotted already.....

Re:great performance

[saintp]

It doesn't even look like Coral or Mirrordot got caches of the page before it Hindenburged. Dang.

Follow up story.

[AtariAmarok]

"Within 20 minutes of the code release, SCO sued claiming that it contained something of theirs".

More C-related sillyness

[cjellibebi]

Slightly offtopic, but this will serve the needs of those of us reading this thread for a fix of C-related humour. The Infrequently asked questions in C (C-IAQ).

Oh the irony

[agent dero]

An obfuscated code contest article has a Microsoft "Get the Facts" ad beneath it.

Does the OSTG try to be subtle or what? :-P

Re:Oh the irony

[ch-chuck]

even better if it was this one

Mirrors

[mozingod]

Google cache with different mirrors across the globe: http://64.233.167.104/search?q=cache:LAIfxt7dfOEJ: www.ioccc.org/+ioccc&hl=en

Re:Mirrors

[yorugua]

This one is still working : http://www.es.ioccc.org.nyud.net:8090/years.html . please, use nyud.net:8090 while at it...!! :)

Re:Mirrors

[fintler]

Asia
www.tw.ioccc.org

Australia and other Pacific
www.au.ioccc.org

Europe
www.de.ioccc.org
www.es.ioccc.org
www.gr.ioccc.org

North America
www0.us.ioccc.org
www1.us.ioccc.org

Re:Mirrors

[DocMax]

Of course, if the "Yes-No-No-No-No-No..." poll taught us anything, it's that even when we have 10 mirrors to choose from, most of us will end up hitting the same mirror. For the mirrors it's like a game of Russian roulette.

clueless submitters

[jbellis]

I wish the submitters for these things understood that 90% of the obfuscation is done post-debugging with perl scripts... (The remaining 10% is the clever part.)

Re:clueless submitters

[RangerRick98]

Actually, 90% of obfuscation is perl scripts. :)

<runs>

Re:clueless submitters

[willisachimp]

Actually, I work with the guy who wrote the 'gavin' (the best of show this year), and know for a fact that the final version you see is *very* similar to his development version. Pretty much the only difference is shorter, meaningless variable names and running it through indent (thus giving no information in the indentation, by using a standard indentation tool)

What you see is how he wrote it - he really is that sick :-D

I'm so glad he doesn't write like this when he's working. Well, not often, anyway.

Re:clueless submitters

[jonadab]

Yeah, but if you want to write Perl code that many Perl programmers have
trouble reading, you have to use functional programming techniques that you
learn from the lisp/scheme programmers. Running the input through a map
that returns a closure each iteration is a good place to start.

Mirror of source tarball

[spydir31]

here we go, Mirror
please don't kill me

Re:Mirror of source tarball

[spydir31]

okay, seeing as there are official mirrors, I'm removing mine

Time to brush up on your l33t coding skills

[GillBates0]

How to write unmaintainable code

Some gems:
Naming variables :
#1 Baby names: Buy a copy of a baby naming book and you'll never be at a loss for variable names. Fred is a wonderful name, and easy to type. If you're looking for easy-to-type variable names, try adsf or aoeu if you type with a DSK keyboard.

#17 Bedazzling Names: Choose variable names with irrelevant emotional connotation. e.g.:
marypoppins = ( superman + starship ) / god;
This confuses the reader because they have difficulty disassociating the emotional connotations of the words from the logic they're trying to think about.

#26 Misleading names: Make sure that every method does a little bit more (or less) than its name suggests. As a simple example, a method named isValid(x) should as a side effect convert x to binary and store the result in a database.

Re:Time to brush up on your l33t coding skills

[smcdow]

How to write unmaintainable code...

Code maintanence is a business consideration, not one for computer scientists.

Re:Time to brush up on your l33t coding skills

[itsNothing]

The weirdest naming i saw was while trying to help an undergraduate work on a program:

one = 4
two = 3
three = one + two

The benefit is that you're pretty sure not to run out of variable names. The downside is that this is a real problem to try to follow after a VERY short time.

Re:Time to brush up on your l33t coding skills

[cavebear42]

I always liked using similer variable names and names that mean things to programmers

Class
class
CLASS
c1ass
Classe
classe
case
Case
CASE

all in the same code.

Re:Time to brush up on your l33t coding skills

[jonadab]

I prefer, if the language in question allows it, to use variable names
containing unicode characters that are similar in appearance, so that for
example one variable might have the letter omicron where another has the
Latin letter o, and one variable might have a capital rho where another
has a Latin capital P. This will be possible for example in Perl6. Abuse
of soft references that do mildly exotic things (e.g., call a closure) to
determine the variable name can also be fun.

In Perl it's also possible, at least in theory, to just about completely
avoid supplying any variable names, by abusing magic variables, such as $_
(in Perl5) or the current topic (in Perl6). However, this is only hard to
read for people who don't think in Perl, so it needs to be combined with
additional obfuscatory techniques, such as mimicry of other languages,
extensive abuse of pack and unpack, nested self-modifying string evals,
and so on and so forth.

The value of not being seen

[downward dog]

In this film we hope to show how not to be seen. This is "Hello World" by Mr. E. R. Bradshaw of Cambridge, MA. It can not be seen. Now I am going to ask the code to stand up. "Hello World," will you stand up please. This demonstrates the value of not being seen.

Re:The value of not being seen

[Drantin]

If anyone doesn't get the joke, go watch some of Monty Python's "And Now, For Something Completely Different"

Obfuscated webserver

[dk.r*nger]

Their webserver is actually written in obfuscated c++ .. Sure, it's slow, but the binary plays a technoversion of Star Sprangled Banner when piped through /dev/dsp ..

Re:Obfuscated webserver

[achowe]

Yes. I wrote it and I'm rather proud of that entry. You can see it working here:

http://hibachi.snert.org:8008/

Version 2.1, the Unobfuscated Posix Windows threaded version will be released sometime soon. If anyone is interested in testing it, email me.

Re:Obfuscated webserver

[Eneff]

I was so unbelievably depressed when I read your entry, I just about went into my Boss's room and quit on the spot.

I bow and commit seppaku in honor of your programming prowess.

Every day

[3770]

Hey,

I write code like that every day for a living.

I'm just about to finish a world wide, 3-tier, trouble ticketing system in the shape of a Maze.

Re:Every day

[RobertB-DC]

Sometimes, .sigs mesh with comments in particularly interesting ways:

I'm just about to finish a world wide, 3-tier, trouble ticketing system in the shape of a Maze.
Don't write code, generate it using XML and XSLT with Visual Studio XGen

I just hope the XGen development team has a good sense of humor...

Re:Every day

[3770]

I couldn't tell you if the XGen development team has a good sense of humor. What I _can_ tell you is that I'm the only developer in that project.

It is also an open source project so you could see the source code.

Re:Every day

[Anonymous Coward]

I'm just about to finish a world wide, 3-tier, trouble ticketing system in the shape of a Maze.

So you're the one who's developing PeopleSoft 9?

Re:Every day

[3770]

Hahaha... :)

Good comeback.

Re:Every day

[TheLink]

"I'm just about to finish a world wide, 3-tier, trouble ticketing system in the shape of a Maze"

"It[Xgen] is also an open source project so you could see the source code."

Right. Next thing you'd be linking to goatse.cx.

Re:Great article summaries lately...

[RPI Geek]

International Obfuscated C Code Contest (I think).

This groups releases a challenge each year that the entrants have to solve using the most obfuscated C code possible. They judge tne entries and award prizes to the best of the worst. Previous entries have used the precompiler to do much of the work, eliminated brackets and spaces, hacked the stack, and generally used many other tricks to complete the challenge.

Official IOCCC mirrors

[Anonymous Coward]

IOCCC Mirrors

Asia

• http://www.tw.ioccc.org/ - Hsin-Chu, Taiwan (24 48' N 120 59' E)
  Australia and other Pacific
  
• http://www.au.ioccc.org/ - Sydney, Australia (34 0' S 151 0' E)
  

Europe

• http://www.de.ioccc.org/ - Hamburg, Germany (53 33' N 10 2' E)
  
• http://www.es.ioccc.org/ - Madrid, Spain (40 25' N 3 41' W)
  
• http://www.gr.ioccc.org/ - Athens, Greece (38 00' N 23 44' E)
  

North America

• www0.us.ioccc.org - Sunnyvale California, US (37 22' N 122 02' W)
  
• www1.us.ioccc.org - Saint Paul, Minnesota US (44 57' N 93 06' W)
  

Re:Great article summaries lately...

[Noksagt]

And just what the hell is an IOCCC?

International Obfuscated C Coding Contest.

I actually thought it was clever how the story on an obfuscated coding contest was, iteself, obfuscated.

Re:Mirror this already!

[Anonymous Coward]

There are several mirrors. I know, I run one of them. Why the submitter hardcoded the us one is beyond me.

• Antarctica
  none yet :-)

• Africa
  none

• Asia
  
• www.tw.ioccc.org - Hsin-Chu, Taiwan (24 48' N 120 59' E)

• Australia and other Pacific
• www.au.ioccc.org - Sydney, Australia (34 0' S 151 0' E)

• Europe
  
• www.de.ioccc.org - Hamburg, Germany (53 33' N 10 2' E)
• www.es.ioccc.org - Madrid, Spain (40 25' N 3 41' W)
• www.gr.ioccc.org - Athens, Greece (38 00' N 23 44' E)

• Extraterrestrial
  SETI is looking for some sites :-)

• North America
• www0.us.ioccc.org - Sunnyvale California, US (37 22' N 122 02' W)
• www1.us.ioccc.org - Saint Paul, Minnesota US (44 57' N 93 06' W)

• South America
  none

ugh.

[numbski]

I went looking for the classic Larry Wall obfuscation for classic's sake, but now I'm having a hard time finding it. *sigh*

Double-rot-13 obfuscation! :)

Re:ugh.

[mislinux]

This is still one of the best. Had a friend show it to me after look at this year's "winners" http://www1.us.ioccc.org/1988/phillipps.c

Mirrors ...

[foobsr]

http://www.de.ioccc.org/years.html#2004

also tw, au, es, www1.us

CC.

Wow, that's the ultimate obscuring....

[Dj]

You can't get better than obfuscation by slashdotting.

OK Mr Supar Comuputar

[stratjakt]

I wonder if 'Winner' is the right word to describe the victor

This is coming from the dingus behind slashcode.

Another mirror

[DoctorEternal]

HERE

Simple trick for beginners

[grungeman]

Name your variables A1, Al, B1, Bl, and so on. With some fonts (especially those fixed width fonts in code editors) a "l" (small "L") looks exactly the same as a "1" (a one), which makes sure that the guy maintaining the code will have fun a-plenty.

Re:Simple trick for beginners

[JollyFinn]

It isn't usefull unless you make sure that automatic search and replace will break the code. You should USE that in somewhere else like "Al" or "Bl" or A1h or B1h it will make it more funny indeed. Then reuse that as a FILE name. And make sure to use clever arithmetics to generate OTHER file name from that file name so that you won't out run a save file names ;)

Re:Simple trick for beginners

[mopslik]

Bah, why use "A" and "B" when "I" (capital i) will do the trick even better?

Examples:

I1I1 (eye one eye one)
IlIl (eye ell eye ell)
lIll (ell eye ell ell)

etc.

Re:Simple trick for beginners

[Ford Prefect]

With some fonts (especially those fixed width fonts in code editors) a "l" (small "L") looks exactly the same as a "1" (a one), which makes sure that the guy maintaining the code will have fun a-plenty.

For ease of writing such horrid code, I recommend the Bistream Vera Sans Mono typeface. All those characters can be distinguished from each other, and there are bold, italic and bold-italic variants for your syntax highlighting needs. Just because you want to confuse and antagonise your fellow cow-orkers doesn't mean you have to suffer yourself!

Download 'em here... :-)

Re:Simple trick for beginners

[PrestoChango]

I'm more partial to sequences of zeroes and capital "O"s. It doesn't look to strange in HTML, but I've seen a few default editor fonts where 0 and O differ by 2 pixels.

O0OO00O0 = ( O0OO + OO0O) / OO0

Re:Simple trick for beginners

[antispam_ben]

It isn't usefull unless you make sure that automatic search and replace will break the code. You should USE that in somewhere else like "Al" or "Bl" or A1h or B1h it will make it more funny indeed.

The A1h's (that some assemblers would take as a hex value A1) should remind one to also use these strings as hex constants: 0xA1, 0xB1, and of course have idenfifiers starting with the letter O as OxA1, OxBl, Oxe4c. (okay, I had to use a little hac|3r 5p33|k - hmm, don't recall seeing any of that in these entries. Is it disallowed, the judges not like it, none of the winning entries happened to have any, or did I miss one?).

I attempted to write something obfuscated many years back, I though it would be funny to have some #defines and such that would make the code's main body look like FORTRAN, Cobol or BASIC code, or even just a short sentence, "Now is the time for all good men to come to the aid of their country" or "The quick brown fox jumped over the lazy dog."

C is absolutely the perfect programming language for such a contest.

That's nothing

[Anonymous Coward]

I could obfuscate code so bad that it would crash the compiler, impregnate the linker and produce a fat binary.

Free iPod Photo | Free Flat Screens | It really works!

Is This Necessary?

[Mignon]

Hasn't obfuscated C already been perfected?

Re:Is This Necessary?

[Nicolay77]

Well, then you should know that Larry Wall was a winner of the IOCCC in 1987.

Oh noooooo

[ewe2]

Every time I see an obfuscated code contest, I wonder if 'Winner' is the right word to describe the victor ;)

I certainly feel like a loser when I read obfuscated code!

Gotta love it.

[jcuervo]

Check out vik1.c:

/* Some more code */

I think they gave him extra points for the comment.

Re:Great article summaries lately...

[Scarblac]

And best of all, that ridiculous code is REALLY AMAZINGLY POWERFUL in many cases.

I only looked at the first entry, anonymous.c. It's 47 utterly incomprehensible lines. What it does is convert text into one of Tolkien's Elvish fonts - and the result looks rather nice, for such a tiny C program (that doesn't use any libraries apart from stdlib, stdio and string).

I took the example from the hint file, pasted only the first half ("ash nazg durhbatuluhk, ash nazg gimbatul") and created a picture, then converted it to PNG with ImageMagick. The result is here. I think that's rather good.

And that's just the first one of this year. Many of the entries of earlier years were stunning.

Size does matter!

[mwvdlee]

Why not just differentiate by varying the length of the names?

xxxxxxxxxxxxxx = xxxxxxxxxxxx + xxxxxxxxxxxxxxxxxxxxx / xxxxxxxxxxxxxxxx;

Makes sense, doesn't it? And it works with every letter of the alphabet too!

Even more obfuscated code

[Anonymous Coward]

If you want to take a look at some code that's a real mess, try this code here.

Ugh.

Re:Even more obfuscated code

[fbonnet]

Rottenflesh ain't bad either as a Freshmeat parody.

IOC code?

[MrCocktail]

I read the title a little too fast, collapsed all the C's together, and wondered out loud when coding became an Olympic sport...

Obfuscation of the English language

[Byzandula]

"My thoughts goes out to the poor guys that actually wrote this code."

I've never had more than one thought GOES out anywhere. Perhaps it is time for a language obfuscation contest.

Re:Obfuscation of the English language

[Dr. Shim]

It's called Engrish.com. And no, the above entry wouldn't make it in, unfortunatly.

mkentry.c?

[hkb]

Jesus, I thought that since mkentry.c was so obfuscated, and at the top that is was the winning entry.

Imagine my surprise when I found out that this was supposed to be normal, radable code.

Re:mkentry.c?

[hkb]

err, readable.

Centrinia

[Ann Coulter]

Centrinia has a base library that is written in C. Since C does not have namespace features, I did the next "best" thing: explicitly have the entire namespace in each global identifier. Take a look at my web site at http://www.student.gsu.edu/~zliu2/centrinia.html to see my rationel. An example of my natural number routine name is

centrinia___base___N___large___arithmetic___multip lication

(without the space(s)). Again, the rationel for this is on the web site.

Re:Centrinia

[Ann Coulter]

That is why i'm going to have a code prepended to each identifier. This will look extremely ugly but the premise is that there will be a certain number of characters, about 6 for 56800235584=(62 = 26 + 26 + 10)^6 unique identifiers. I originally thought that 30 "digit" identification "numbers" be prepended. But a later thought is to have a total of m = (62^30 + 62^29 + ... 62) identifiers. This can be done because the underscore is not in the 62 digit character set and can be used to denote the end of an identifier. I would use about three (n=238328) or four (n=14776336) digits followed by the path and function name. This should make it portable to all compilers.

Re:Centrinia

[p3d0]

From the rationale...

In the future, the Author will create a language that emphasizes speed and portability.

Aha. Join the club. Here's hoping you're one of those special few who actually succeed in creating a useful programming language that others actually use.

Re:Centrinia

[pclminion]

My God dude, I downloaded that library a long time ago and was wondering what the hell you were smoking...

I still don't agree with it at all :-/

Re:Centrinia

[jonadab]

> Since C does not have namespace features, I did the next "best" thing:
> explicitly have the entire namespace in each global identifier.

Much of Emacs is written this way. (I'm talking about the parts written in
elisp, not the basic pieces written in C.)

Re:Centrinia

[multipartmixed]

static

dlopen

ever heard of either of them?

Re:Centrinia

[Old Wolf]

All names containing double-underscores are reserved for use by the implementation, if you want to be portable then you should switch them to singles.

Inline Article Links

[Dr. Shim]

Clicking on inline hyperlinks in articles on Slashdot is really amusing. What you guys next time can do, is just post a link to the Google cache of the website in particulare.

I'm sure it'll save a few expensive phone-calls. ;)

A tutorial

[Smallest]

How to obfuscate Mandelbrot code.

text formatting? please.

[mgoodman]

the entries that relied simply on obfuscation via text formatting (although that anime one looked kinda cool), kind of took the easy way out.

i mean, realistically, how hard is it to strip out white space in vi or some other editor that has find/replace? once the white place is gone, place tabs as appropriate.

real obfuscation comes from indecipherable variable names, unused variables, complex algorithms that accomplish no more than simple iteration, etc.

besides, the best way to write obfuscated code in C is to write it in one big string that is really just PERL -- and then use C to recreate PERL. I mean, come on guys: PERL = OBFUSCATION.

pussies.

Re:text formatting? please.

[jonadab]

Agree about whitespace, but...

> real obfuscation comes from indecipherable variable names, unused variables,

No, these things are pretty trivial to deobfuscate. Like the whitespace,
you do them, just for the added visual effect, but they only contribute a
little to the overall difficulty of deciphering the code.

> complex algorithms that accomplish no more than simple iteration, etc.

Counterintuitive algorithms are good. Abuse of obscure language (or compiler)
quirks can also be fruitful territory. Most of the best obfuscations that
I've seen, however, center around obfuscating the code in entirely another
language from the one the contest centers on, then writing an obfuscated
interpreter for that language in the contest language. For example, for the
Obfuscated Perl Competition, you might write the actual functional part of
your code in obfuscated Postscript and integrate a PostScript interpreter
written in the best/worst obfuscated Perl you can manage. For the IOCCC,
you might write your entry in Threaded Intercal and then wrap it up in a
Threaded Intercal interpreter that you write in the most obfuscated C you
can manage.

Re:Great article summaries lately...

[An ominous Cow art]

Bah, you could do the same with 2 lines of Perl and be 10e8 times more obfuscated :-).

But seriously that is very impressive.

hee hee

[mattyrobinson69]

wouldn't look good on a CV: ...and in 2004 i wrote the most obfusicated code known to man..

Re:hee hee

[achowe]

Actually having mentioned I won previous years of the IOCCC on my CV has helped me get interviews. Some are just curious, others want to know how wacko I might be.

My Contribution

[AnalogDiehard]

I submitted a M$ Windows XP EULA. The code parser exploded and it was disqualified.

Re: #define tricks are usless for obfuscation

[Anonymous Coward]

step 1: cpp -E -nostdinc unreadable.c | grep -v '^#' | indent > readable.c
step 2: ?
step 3: profit!

This method also works on lame tricks like:

a;bunch;of;stuff;x\
x = 3;

Re:Great article summaries lately...

[Coryoth]

And best of all, that ridiculous code is REALLY AMAZINGLY POWERFUL in many cases.

I only looked at the first entry, anonymous.c. It's 47 utterly incomprehensible lines. What it does is convert text into one of Tolkien's Elvish fonts

I was fairly impressed with Gavin.c. It's 165 lines of nicely indented/formatted C code that's pretty much incomprehensible. What does it do? It's a 32 bit multitasking operating system complete with a GUI, a shell, and a text viewer called vi.

Or perhaps Vik1.c - 63 lines (including a comment :-), that when compiled gives you an X11 racing game. But check out the feature list:

• Drive on a road in a 3-d landscape with hills and curves
• Mountains in the horizon
• A sun in the sky when driving during the day.
• Dark sky and reduced visibility when driving at night.
• Snow when driving in the winter.
• Slippery road when driving in the winter.
• When driving off the road, the car slows down to a halt
• Three different race tracks that takes about one minute to complete.
• Speed meter.
• Computer driven opponent cars.
• Collision detection when driving into other cars.
• Lap time measurement.
• The best lap time is stored as reference.

Not bad for 63 lines of C code.

Jedidiah.

nethack/vi keys for arachnid

[lilmouse]

Yay! I understood the code enough to change the movement keys to vi/nethack standard!

--LWM

Re:nethack/vi keys for arachnid

[multipartmixed]

That's nothing, I've already got it running in a 3D rendered OpenGL environment.

Re:nethack/vi keys for arachnid

[lilmouse]

Does it still use its own sourcecode as a good default maze?

--LWM

Re:What happened to the voting software?

[Xcott Craver]

Do a Google search on "obfuscated v" to see the entries of the obfuscated voting contest. The contest was judged a while ago, and there are some clever submissions there. One of them still baffles me.

I submitted this as a story when the winners were announced, but it was rejected.