These are some of mine implementations of the Brainfuck programming language in the form of interpreters.

Why?

It happens to be a really good way to acquire a shallow grasp of a programming language, make comparisons.

It contains const, variables, maps, list, stacks, vector, bit fiddling, if-else-switch, output, file reading, error treatment, usage of standard libraries, etc.

So, implementing a brainfuck interpreter is fun and gives you a quick and basic overview of any language you want to learn.

python3 brainfuck.py <program>

cc brainfuck.c -o brainfuck

./brainfuck <program>

clang++ brainfuck.cpp -o brainfuck

./brainfuck <program>

go run brainfuck.go <program>

node brainfuck.js <program>

See programs folder.

Not mine, scraped from the Internets.

Brainfuck is simple.

Memory use to be 30.000 cells with byte size initialized to zero.

There is a pointer pointing to one of the cells anytime.

Canonical Brainfuck programs are limited to these operands: < > + - , . [ ]

< > moves the pointer along the memory.

+ - increment, decrements the cell values.

. print the character pointed by pointer.

, input (not implemented in my interpreters yet)

[ if memory[pointer] is zero jump to the matching ] position.

] if memory[pointer] is NOT zero return to the matching [ position.

That's all. There are variants: wrapping memory, extended operants, cell size, etc. Almost all unchallenging.