bfk

Brainf*ck programming language interpreter in multiple languages.

• Python
• Rust

https://en.wikipedia.org/wiki/Brainfuck

Characters

Memory

• > Increment the data pointer by one.
• < Decrement the data pinter by one.

Values

• + Increment the byte at the data pointer by one.
• - Decrement the byte at the data pointer by one.

Input & Output

• . Output the byte at the data pointer.
• , Accept one byte of input and store it in the byte at the data pointer.

Loop

• [ If the byte at the data pointer is zero, then instead of moving the instruction pointer forward to the next command, jump it forward to the command after the matching ] command.
• ] If the byte at the data pointer is nonzero, then instead of moving the instruction pointer forward to the next command, jump it back to the command after the matching [ command.

Examples

# Hello World!
++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.

# Hello World!
>+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]>++++++++[<++++>-] <.#>+++++++++++[<+++++>-]<.>++++++++[<+++>-]<.+++.------.--------.[-]>++++++++[ <++++>-]<+.[-]++++++++++.

# Fibonacci sequence.
>++++++++++>+>+[ [+++++[>++++++++<-]>.<++++++[>--------<-]+<<<]>.>>[ [-]<[>+<-]>>[<<+>+>-]<[>+<-[>+<-[>+<-[>+<-[>+<-[>+<- [>+<-[>+<-[>+<-[>[-]>+>+<<<-[>+<-]]]]]]]]]]]+>>> ]<<< ]