Syntax.md

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The eight language commands each consist of a single character:

Command	Meaning
>	Increment the data pointer (to point to the next cell to the right).
<	Decrement the data pointer (to point to the next cell to the left).
+	Increment (increase by one) the byte at the data pointer.
-	Decrement (decrease by one) the byte at the data pointer.
.	Output the byte at the data pointer.
,	Accept one byte of input, storing its value in the byte at the data pointer.
[	If the byte at the data pointer is zero, then instead of moving the instruction pointer forward to the next command, jump it forward to the command after the matching [ command.
]	If the byte at the data pointer is nonzero, then instead of moving the instruction pointer back to the next command, jump it forward to the command after the matching ] command.

(Alternatively, the ] command may instead be translated as an unconditional jump to the corresponding [ command, or vice versa; programs will behave the same but will run more slowly, due to unnecessary double searching.)
[ and ] match as parentheses usually do: each [ matches exactly one ] and vice versa, the [ comes first, and there can be no unmatched [ or ] between the two.

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Brainfuck programs can be translated into C using the following substitutions, assuming ptr is of type char* and has been initialized to point to an array of zeroed bytes:

Command	C equivalent
>	++ptr;
<	--ptr;
+	++*ptr;
-	--*ptr;
.	putchar(*ptr);
,	*ptr = getchar();
[	while (*ptr) {
]	}