The brainfuck programming language is an esoteric programming language noted for its extreme minimalism. It implements a Turing-complete language.
brainfuck was created in 1993 by Urban Müller with the intention of designing a language which could be implemented with the smallest possible compiler.
The language consists of eight commands:
Cmd Effect
— ——
+ Increases element under pointer
– Decrases element under pointer
> Increases pointer
< Decreases pointer
[ Starts loop, flag under pointer
] Indicates end of loop
. Outputs ASCII code under pointer
, Reads char and stores ASCII under ptr
The equivalent C notation for brainfuck "+" is the following:
++*ptr
It increments the current cell by 1,
The equivalent C notation for brainfuck "-" is the following:
--*ptr
It decrements the current cell by 1.
If you want to set a "B" char in the current cell of memory you shell increment the cell with 66 + (if the current cell value is 0). Now if you want to set the value of this cell to a "A" char you only need to add a "-", the following example prints "BA".
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++.-.
The equivalent C notation for brainfuck ">" is the following:
++ptr
New current cell is the next cell
The equivalent C notation for brainfuck "<" is the following:
--ptr
New current cell is the prevoius one.
If you want to set the first ten cell to "1" you can do the following:
+>+>+>+>+>+>+>+>+>+
and now if you want to come back to the first cell you can do:
<<<<<<<<<<
The equivalent C notation for brainfuck "." is putchar(*ptr), while the equivalent C notation for brainfuck "," is the following:
*ptr=getchar();
The "," operator will be implemented in a next version of brainfucktory.
The equivalent C notation for brainfuck "[" and "]" is the following:
while(*ptr)
{
}
if you want to do the following:
i=10;
while(i){printf("%d",i); i--}
you can do:
++++++++++[.-]