TL;DR: It's just a big one dimension character array where all values are set to 0 and you can control the pointer with its 8 commands. A character holds ASCII values, so by increasing a value one by one(like a caveman) you can get to characters such as 'a', '1', 'space'.
| Commands | Meaning |
|---|---|
| , | Get user input and store in the pointer |
| . | Print what is in the pointer |
| + | Increase the char by one |
| - | Decrease the char by one |
| > | Move the pointer to the right |
| < | Move the pointer to the left |
| [ | Start a loop |
| ] | End a loop if the pointer is 0, otherwise, go back where [ was and loop again |
For more details see.
Some tests I'm using to test my implementation, feel free to use it too.
Warning: it still doesn't support nested loops.
- Compile with:
gcc -o brainfuck brainfuck.c
- Create a text file example.txt or with any extension you want
- Run:
brainfuck example.txt