The Challenge

Let's get down to business. You hate me, /prog/, and I hate you. Being a Calculus, I am unsatisfied with my programming skill and seek improvement. I challenge any of you who take pride in your skill with C to engage in the following game:

- Put down a challenge. A criteria for a program that both of us shall implement with C.
- Wait for me to accept your challenge. I don't accept those stupid challenges you find on that project euler website. Math doesn't interest me, "such that there exists"-boys. The exercises in K&R2 and, perhaps simple Unix programs, are good examples of the kinds of programs that interest me. You know, useful ones.
- Post your code.
- Wait for me to post my code.

If your program is fancier than my own and yields little criticism from one Lambda A. Calculus, I shall leave /prog/. I'm open to other stakes as well.

I await your challenges and, if any stupid stack boys want to challenge me, go for it.

>>40
GO REED A FUCKIN BOOK U RETOID.

>>41
butt i already read hairy potter. or u mean more like index LNs?

>>32
KODAK THE CAMERA'S A SHIT PROGRAMMER BTW. U THINK HE'S GOOD, SEND HIM INTO THIS FUCKING THREAD WITH A DECENT SET OF CRITERIA FOR A PROGRAM. WE'LL SEE HOW GOOD YOUR LITTLE BUTT BUDDY IS. OTHERWISE FUCK OFF.

>>42
GO SHOVE A POT UP YOUR ASS, POTTER.

>>42
GO SHOVE A POT UP YOUR ASS, POTTER.

CMON YA FUCKIN WIMPS. GIMME A DECENT CHALLENGE ALREADY.

>>46
all right, ill take the bait. write something that calculates the gamma function of an arbitrary real faster than my program. heres the pseudocode:

gamma(x){
if(x<-0.5||x>0.5)useRecurrenceRelations();
else useTaylorSeriesOfTheReciprocalOfTheGammaFunction();
}

>>47
'NOTHER MATH BOY CHALLENGE.

>>47
ALSO, SPEED VARIES BASED ON DA C IMPLEMENTATION. U CAN ANALYSE GROWTH RATES INDEPENDENTLY OF YOUR C IMPLEMENTATION, SURELY, BUT RUN-TIMES THEMSELVES CAN ALWAYS VARY FROM ONE C IMPLEMENTATION TO ANOTHER.

>>47
IN ANY CASE, IF UR SERIOUS ABOUT DIS, DIS PROBABLY OUTPERFORMS YOUR CODE ON A FAIR NUMBER OF C IMPLEMENTATIONS:

#include <stdio.h>
#include <math.h>

int main(void)
{
    double f;

    while (scanf("%lf", &f) == 1)
        printf("%f\n", tgamma(f));
}

>>47
OF COURSE, I'M NOT VERY SERIOUS ABOUT DIS MYSELF. STILL WAITING FOR A DECENT CHALLENGE.

>>47
THOUGH I MUST SAY, I APPRECIATE YOUR ENTHUSIASM FOR PROGRAMMING. WE'RE JUST NOT HIRING AT THIS TIME. DIG?

WELL, WE'RE NOT HIRING MATH BOYS.

WHATEVER POIADJS

NEXT CHALLENGE

check em !!!

>>50
I forgot to say that it must be at least as accurate as my code (assume the taylor series contains enough terms to approximate to the long double precision between 0.5 and -0.5)
tgamma or tgammal is very inaccurate.

>>56
DAS A CHALLENGE FER MATH BOYS. REAL PROGRAMS IS THE GAME, AND LAMBDA ARTHUR CALCULUS IS THE NAME.

Write a Shiichan HTML to BBCode converter.

The output of the following should print exactly what was entered into the comment box:
curl -s http://dis.4chan.org/read/prog/<threadnum>/<postnum>; | ./html2bbcode

>>58
Some documentation for these HTML and BBCode conventions would be nice. I don't have a list of all the support BBCode tags, nor what they translate to in HTML.

>>59
http://wakaba.c3.cx/shii/shiichan3960.zip

>>60
OH DATS REALLY NICE.

abbc/abbc.cfg.php seems like the relevant file, but as far as interpretting the replacement html tags go, it seems like gibberish.

WHAT DA FUCk, I DIDN"T EVEN KNOW THERE WAS SMILEY SHIT ON DESE BOARDS :-)

[:finger:]

The thing that makes it nontrivial is shit like [i]fake[/i] [b][/b][code] [m]failures[/m].

Or
shit
like
this.

>>58
UNLESS U GOT SOME MORE STRAIGHTFORWARD DOCUMENTATION (EITHER OF DA WHOLE THING OR A SUBSET OF IT DAT SHALL BE IMPLEMENTED BY DA PROGRAM) I SURE AS FUK AINT PARTICIPATING IN DIS.

>>58
AND BESIDES, DAT SHIT DON'T EVEN WORK ON DIS WEBSITE. DER AINT ANY FUCKIN QUOTE TAGS FOR INSTANCE [quote] SEEE?[/quote]

Write GENTOO

>>68
WAT DA FUCK IS UR PROBLEM?

>>68 then do it

Write SKYNET

>>67
$abbc_cfg['subsets'] = ABBC_ALL & ~ABBC_PARAGRAPH & ~ABBC_SMILEYS & ~ABBC_LIST & ~ABBC_FONT & ~ABBC_IMG & ~ABBC_QUOTE & ~ABBC_SPECIAL & ~ABBC_URL;

Not all the tags are active, or can't you figure out simple configuration code?

WAT KIND OF FUCKED UP PROGRAMS DO U GUYS WRITE?

U GOT SOME RETARDED NIKITA CLOWN WHO WANTS TO WRITE A FUCKING META CIRCULAR EVALUATOR. IN C? YEAH SURE U FUCKING CLOWN. LIKE DAT CAN BE DONE EASILY IN A WHOLE FUCKING DAY. GET REAL.

THEN U GOT A RETOID WHO COMES UP WITH HIS STUPID FIZZBUZZ SHIT. WHAT'S THAT? ONLY SEVEN LINES OF FUCKING CODE OR SOMETHING. U MAY AS WELL HAVE JUST GIVEN ME A FUCKING HELLO WORLD PROGRAM TO WRITE.

THEN THERE'S A STACK BOY, WHO SAYS HE'S GOT A cat AND IT TURNS OUT HE'S JUST GOT AN UNPORTABLE PROGRAM THAT COPIES stdin TO stdout.

THEN U GOT SOME CLOWN WHO WRITES THIS STUPID BANANA SIMULATION SHIT. IT'S DRESSED UP AS A FUN BANANA SIMULATION THING BECAUSE IT'S REALLY JUST A SHITTY PROJECT EULER PROBLEM.

THEN U GOT SOME OTHER KID WHO'S WRITING HIS GAMMA FUNCTION THING. FINE PROJECT, I GUESS, BUT IT SURE AS FUCK AINT SUITABLE FOR THIS CHALLENGE.

THEN U GOT SOME OTHER GUY WHO'S WRITING SOMETHING THAT TAKES TEXT IN ONE FORMAT AND OUTPUTS IT IN ANOTHER FORMAT. TOTALLY FINE IDEA FOR THIS CHALLENGE EXCEPT THAT THERE'S NO FUCKING DOCUMENTATION SO WE'RE STUCK GUESSING AT WHAT DA FUCKIN PROGRAM'S MEANT TO DO.

THEN WE HAVE SOME OTHER SHIT HEAD WHO WANTS US TO DUPLICATE A FUCKING CANOE SLASH LOONIX DISTRIBUTION. YEAH, GOOD ONE YOU STUPID RETOID.

AND FINALLY WE HAVE A STUPID KID WHO WANTS TO MIMICK THE PREVIOUS FUCKER, EXCEPT HE WANTS TO TAKE IT TO TAKE IT UP A LEVEL IN RETOIDATION. HE WANTS TO WRITE SKYNET! WELL WOOP DI FUCKING DOO! WE HAVE A CANDIDATE FOR THE /prog/ AWARD FOR RETOIDATION. CONGRATU-FUCKING-LATIONS, >>71, YOU'RE A FUCKING WINNER.

NOW ARE THERE ANY MORE RETOIDS WHO WANT TO CHALLENGE >>71, THE BIGGEST FUCKIN RETOID IN THIS THREAD SO FAR?

>>72
WAT DA FUCK DO I LOOK LIKE TO YOU? I'M A FUCKIN C PROGRAMMER, NOT A FUCKIN PHP INTERPRETER.

DEANIS RICKY'S PROBABLY TURNING IN HIS FUCKIN GRAVE.

WE'RE STUCK GUESSING AT WHAT DA FUCKIN PROGRAM'S MEANT TO DO
The output of the program, when reposted to /prog/ should produce a post identical to the input. Why is that so hard to figure out?

>>76
ALRIGHT, I'LL TAKE ANOTHER LOOK AT IT.

>>72
WE GOT DIFFERENT SUBSETS. DA ONE I GOT DISABLED CODE TAGS. WAT DA FUCK IS WITH DAT?

>>72
AND WAT DA FUCK, sup AND sub ARE PART OF FONT YET IT'S DISABLED? THOSE ARE ENABLED ON /prog/. WAT DA FUCK IS WITH DIS SHIT?

>>72
AND DER'S NO FUCKING MENTION OF SHIT LIKE POST REFERENCES, THE '>' STYLE QUOTES, AND ALL DAT OTHER SHIT. DIS IS FUCKIN STUPID.

Write a program that writes the standard to an ANSI text file.