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./brainfuck: Brainfuck programming language interpreter
See <http://en.wikipedia.org/wiki/Brainfuck> for more details
Usage: ./brainfuck [options] [file]
Size of each data cell is 4 byte(s)
All data cells are zeros initially
Options (defaults are in brackets):
-s num stack size (128)
-d num data size (1024)
-t trace execution for debugging
-O optimize code
-C translate into C (to stdout)
-p cow translate into Cow (to stdout)
Formats for operators '.' and ',' (output and input):
-c, -i, -u, -o, -x char, signed int, unsigned int, octal, hexadecimal
octal number must be prepended by '0' (zero),
and hexadecimal - by '0x'
Default i/o format -u
-h this help message
file file to execute,
if omitted read stdin
Standard operators: <>+-[].,
Extensions:
ciuox - change i/o format (same as -c & others above)
; - end of code (useful when reading stdin)
# - comment to the end of line (useful when reading files)
Examples:
echo '+++[.-]' | ./brainfuck # count down from 3 to 1
echo ',+++.;5' | ./brainfuck # shows 8
echo ',>,<[->+<]>.;4 5' | ./brainfuck # shows 4+5=9
echo 'c,u.;h' | ./brainfuck # shows 104 (ASCII code for 'h')
echo ', [-[->+<]>];4' | ./brainfuck -t # move data pointer by 4
echo ',>,< [> [->+<] < -[->+<]> ]; 3 7' | ./brainfuck -t # move '7' by 3
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