Learn BRAINFUCK with Real Code Examples

Updated Nov 25, 2025

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Code Sample Descriptions

1

Hello World in Brainfuck

++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++.>.+++.------.--------.>+.>.

A classic 'Hello World!' program written in Brainfuck using its 8 commands.

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2

Brainfuck Simple Addition

++>+++<[->+<]>.

Adds two numbers and outputs the result as a character.

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3

Brainfuck Multiply Two Numbers

++>+++<[>[->+>+<<]>>[-<<+>>]<<<-]>>.

Multiplies two small numbers and outputs the result.

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4

Brainfuck Print Numbers 0-9

+++++[>++++++++++<-]>.[-]>+++++[>++++++++++<-]>.[-]>+++++[>++++++++++<-]>.[-]>+++++[>++++++++++<-]>.[-]>+++++[>++++++++++<-]>.[-]>+++++[>++++++++++<-]>.[-]>+++++[>++++++++++<-]>.[-]>+++++[>++++++++++<-]>.[-]>+++++[>++++++++++<-]>.[-]

Prints ASCII characters for numbers 0 to 9.

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5

Brainfuck Echo Input

,.

Reads a single character from input and outputs it.

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6

Brainfuck Loop Example

+++++[.-]

Decrements a value and outputs until zero.

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7

Brainfuck Print 'A'

++++++++++[>++++++++++<-]>+.

Outputs the ASCII character 'A'.

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8

Brainfuck Print Alphabet

++++++++++[>++++++++++<-]>+++++.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.+.

Prints uppercase letters A-Z sequentially.

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9

Brainfuck Simple Subtraction

+++++>++<[->-<]>.

Subtracts two values and outputs the result.

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10

Brainfuck Clear Cell

+++++[-]

Sets a memory cell to zero.

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11

Brainfuck Hello Brainfuck

++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++.>.+++.------.--------.>+.>.

Prints 'Hello Brainfuck' as a Brainfuck program.

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