Picture this program

chephy · Post by **chephy** » Thu Oct 21, 2010 9:26 pm

I wonder how people who have not seen the obfuscated C contest entry »Pi« (http://www.cise.ufl.edu/~manuel/obfuscate/pi.c) solve this. Googling? Guessing? Actually trying to make sense of the code?

the hellridden Baron · Sat Nov 06, 2010 2:12 pm

Guessing. :o
Took me (about) 5 seconds after seeing this challenge for the first time. :D

Karian · Post by **Karian** » Mon Nov 29, 2010 11:22 am

I tried making sense of the code, then going for the guess based on the visual look

Fri Jun 24, 2011 11:25 am

I recognized it immediately because I know of the IOCCC. But I think even if you don't, you could always grab a C compiler and just run the program (and remove the warnings

). The result of 3.156 together with looking at the source code reveals the answer pretty quickly.

DaymItzJack · Post by **DaymItzJack** » Thu Jul 21, 2011 7:10 pm

"What is this attempting to calculate"
"Which numbers do I know...?"
pi.

Straight up guess =/

CodeX · Post by **CodeX** » Thu Jul 21, 2011 8:13 pm

pasting it on codepad would also do the trick, but it probably is too guessable for it's own good

aurora · Post by **aurora** » Sat Feb 04, 2012 11:24 am

guessing [2] ... the answer is imo obvious

haellowyyn · Post by **haellowyyn** » Sun Mar 10, 2013 7:29 pm

Compiling and executing the code gives you '3.156'. Then, it's easy to guess

Hippo · Post by **Hippo** » Mon May 12, 2014 11:38 pm

Yes, I have decided to run it on online c interpretter and 3.156 was not accepted so I read the challenge forum and answered pi. I have not looked at expanded code till now ... OK each "disk pixel" decrements F, but OO is decremented only on the line start otherwise -F>0 is evaluated to true so OO is not decremented. Therefore F/OO/OO is disk to square ratio ...