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Brainfuck interpreter written in C

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Statistics on brainfuck

Number of watchers on Github 147
Number of open issues 2
Average time to close an issue 28 days
Main language Brainfuck
Average time to merge a PR 5 days
Open pull requests 0+
Closed pull requests 8+
Last commit almost 3 years ago
Repo Created almost 9 years ago
Repo Last Updated over 2 years ago
Size 693 KB
Organization / Authorfabianishere
Latest Release2.7.1
Page Updated
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brainfuck Build Status

Brainfuck interpreter written in C.


brainfuck [-veh] file...
-e --eval       run code directly
-v --version    show version information
-h --help       show a help message.

The interactive console can be accessed by passing no arguments.

We also provide a C api:

#include <stdio.h>
#include <stdlib.h>
#include <brainfuck.h>

int main() {
    BrainfuckState *state = brainfuck_state();
    BrainfuckExecutionContext *context = brainfuck_context(BRAINFUCK_TAPE_SIZE);
    BrainfuckInstruction *instruction = brainfuck_parse_string(",+++++.");
    brainfuck_add(state, instruction);
    brainfuck_execute(state->root, context);
    return EXIT_SUCCESS;


Look in the examples directory for a large amount of brainfuck examples.

Getting the source

Download the source code by running the following code in your command prompt:

$ git clone https://github.com/fabianishere/brainfuck.git

or simply grab a copy of the source code as a Zip file.


Create the build directory.

$ mkdir build
$ cd build

Brainfuck requires CMake and a C compiler (e.g. Clang or GCC) in order to run. It also depends on libedit, which is available in the main repositories of most Linux distributions (e.g. as libedit-dev on Debian) and comes with the macOS XCode command line tools. Then, simply create the Makefiles:

$ cmake ..

and finally, build it using the building system you chose (e.g. Make):

$ make


See LICENSE file.


Fabian Mastenbroek https://github.com/fabianishere
aliclubb https://github.com/aliclubb
diekmann https://github.com/diekmann
SevenBits https://github.com/SevenBits
Alex Burka https://github.com/durka
outis https://github.com/outis
rien333 https://github.com/rien333
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brainfuck list of languages used
brainfuck latest release notes
2.7.1 2.7.1
  • Add a make install option (#52)
  • Add option to install a shared library (#48)
  • Add Travis CI integration (#46)
  • Add option to toggle an editline enabled build (#43)
2.7.0 2.7.0
  • add basic readline functionality from the NetBSD editline library to interactive console.
  • reduce newline output in interactive console as to make it more like other consoles.
  • read in only one byte of input on the , command, as per the bf language specification.
  • make codebase c89 compatible
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