Brainfuck Examples

Counter

Outputs the digit '5' (ASCII 53).

Output: 5

Echo

Reads one character and outputs it.

Input: Any visible character

Output: Same character

Move Value

Moves a value from one cell to another. Input two visible characters, outputs their sum as a character. For example, input '1' and '2' (ASCII 49 and 50) will output 'c' (ASCII 99).

Input: Two visible characters (e.g., 1 and 2)

Output: Sum as visible character (e.g., 'c')

Hello World

The classic 'Hello World!' program.

Output: Hello World!

Multiplication

Multiplies two single-digit numbers. Input two digits (e.g., '3' and '4'), outputs their product as a character (e.g., 'L' for 3*4=12+48=60, ASCII 60 is '<').

Input: Two digits (e.g., 3 and 4)

Output: Product as visible character (e.g., '<')

Truth Machine

If input is '0', outputs '0'. If input is '1', outputs infinite '1's. (Input must be the digit '0' or '1')

Input: 0 or 1 (as digit)

Output: 0 or infinite 1s

Cell Copy

Copies a value to multiple cells. Input a visible character, result is value copied to next cell.

Input: One visible character (e.g., 'A')

Output: Value copied to next cell