Brainfuck hello world

Introduction to Brainfuck




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Have you ever heard about a programming language that's designed to be as minimalistic and mind-boggling as possible? Say hello to Brainfuck! This esoteric language is both fascinating and frustrating, making it a fun challenge for curious coders.

Purpose

The purpose of Brainfuck is not necessarily to facilitate efficient or practical programming; instead, it exists to push the boundaries of programming language design. With only
eight commands
and an extremely simple memory structure, Brainfuck forces developers to think in a completely different way compared to most traditional languages. It's an exercise in
minimalism
and
creativity
more than anything else.

Basic Commands

Brainfuck has only eight commands, which manipulate a memory array and a data pointer:


: Increases the data pointer.

: Decreases the data pointer.

: Increments the byte at the data pointer.

: Decrements the byte at the data pointer.

: Outputs the byte at the data pointer.

: Accepts one b


Welcome to yet another installment of Hello World in Every Language. Today, we’re taking a look at Hello World in Brainfuck brought to us by Christoph Böhmwalder, one of our biggest contributors to the Sample Programs collection.

Table of Contents

Brainfuck Background

According to Wikipedia, Brainfuck is an esoteric programming language created in 1992, and notable for its extreme minimalism. As people have implemented more and more ridiculous programs with the language, it has become relatively well-known over the years. Nowadays some see it as the ultimate coding challenge to create something useful in Brainfuck.

At the core of the language is a more-than-compact instruction set, comprising of a whopping eight instructions. Brainfuck uses a machine model consisting of an infinite list of one-byte cells, an instruction pointer, and a cell pointer. The instructions can be used to interact with this environment:  and  move the cell pointer,  and  increment or decrement the value of the cell at the current pointer, and  and  denote a loop.

A loop only starts when the value of the current cell is non-zero,

The Art in Code



Snippet source


It doesn’t look like source code at first, but this snippet is actually valid code written in a language called Brainfuck.

Brainfuck supports only 8 commands, each represented with a single character. These valid commands are: . Everything else is ignored.

Brainfuck is considered an
esoteric programming language
meaning it has no practical purpose and is made for exploratory and research purposes, as a proof of concept or just for fun.

Try it out

You can run the snippet above by following this link.

Explanation

Brainfuck operates on top of a single “data” array and it can only manipulate a single element at a time, either changing its value or printing it out. and are used to move on to the next or previous element respectively, making Brainfuck function in a way that’s similar to a Turing machine.

Wikipedia has an in-depth explanation of the Hello World program above.






anilsathyan7


/


helloworld.bf





+++++ +++++ initialize counter (cell #0) to 10



[ set the next four cells to 70 100 30 and 10 respectively



> +++++ ++ add 7 to cell #1



> +++++ +++++ add 10 to cell #2



> +++ add 3 to cell #3



> + add 1 to cell #4



<<<< - decrement counter (cell #0)



]





> ++ . print 'H' (H = ASC (72))



> + . print 'e' (e = ASC (101))



+++++ ++ . print 'l'



. print 'l'



+++ . print 'o'





> ++ . print ' '





<< +++++ +++++ +++++ . print 'W'



> . print 'o'



+++ . print 'r'



----- - . print 'l'



----- --- . print 'd'



> + . print '!'



> . print '\n'