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[17:. - [ brainfuck ] [tefx] :. ]
[tefx@b0g.org] :. ]
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its a self descriptive langauge really. it does fuck your brain up.
it was designed to be a turing complete language with the smallest
possible compiler. Brainfuck was created by a weird german guy,
called Urban Mueller. Originally for the amiga, it has graced other
platforms too.
brainfuck is a minimalist langauge, it has 8 commands. these
commands
work on a char array, and a counter.
Cmd Effect Equivalent in C
--- ------ ---------------
+ Increases element under pointer array[p]++;
- Decrases element under pointer array[p]--;
] Increases pointer p++;
[ Decreases pointer p--;
[ Starts loop, counter under pointer while(array[p]) {
] Indicates end of loop }
. Outputs ASCII code under pointer putchar(array[p]);
, Reads char and stores ASCII under ptr array[p]=getchar();
if you're wondering what turing complete is, it means that it can
solve
any solvable mathematical problem.(I hope). Someone has written a
primes
program, two people have written quines in brainfuck. a quine is a
program
that prints its source code. But this is not comparable to the guy
who has
written a brainfuck interpreter in brainfuck.
see:http://home.wxs.nl/~faase009/
trying to write programs in brainfuck will really screw with your
brain.
after seeing lines of code that are
++++++++++[]++++++++++++]++++++++++[[-]]----.]+.+.[++++.
you get a small headache.
but when you get bored you end up producing stuff like this :
++++++++++[]+]+++]++++++++++]++++++++++++]++++++]++++++]+++++]
+++++++++[[[[[[[[-]]]++]-----]++++]++]]---]++[[[[[[.].....[...
]....[...]....[..]..[..]..[[.]]].[.[...].].[[.]].[[..]..].[[.]
].[[..]..].[[.]]]]]].[[[[[[.]]]]]].[.[[[[[.]]]]].[[[[[[.]..]].
[[.]].[[...]].[[..]..].[[.]].[[..]..].[[..]]].[[[..]]]].[[[[[.
]..]].[.].[[...]].[....].[[.]].[.].[[....]]]]].[[[[.]]]].].[[[
[[.]]]]].[[[[[[[.[
social life, what social life?
Before you run off to write an interpreter, some other sad people
have done
it for you.
I was told that this interpreter was written by mr brainfuck himself
char
m[9999],*n[99],*r=m,*p=m+5000,**s=n,d,c;main(){for(read(0,r,4000);c=
*r;
r++)c-']'||(d]1||(r=*p?*s:(--s,r)),!d||d--),c-
'['||d++||(*++s=r),d||(*p+=c==
'+',*p-=c=='-',p+=c==']',p-=c=='[',c-'.'||write(2,p,1),c-
','||read(2,p,1));}
so have fun, and watch those hours fly by as you try and debug
brainfuck.
some other people have written compilers for brainfuck, however I
have only seen it
for dos.
see:
http://www.mines.edu/students/b/bolmstea/randlang/index.html#brainf
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