Learn Brainfuck - 11 Code Examples & CST Typing Practice Test

Brainfuck is an esoteric programming language created to challenge and amuse programmers. It uses a minimalistic set of eight commands to manipulate an array of memory cells and control a data pointer.

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Hello World in Brainfuck Brainfuck Simple Addition Brainfuck Multiply Two Numbers Brainfuck Print Numbers 0-9 Brainfuck Echo Input Brainfuck Loop Example Brainfuck Print 'A'Brainfuck Print Alphabet Brainfuck Simple Subtraction Brainfuck Clear Cell Brainfuck Hello Brainfuck

Learn BRAINFUCK with Real Code Examples

Updated Nov 25, 2025

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Code Sample Descriptions

Hello World in Brainfuck

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

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

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Brainfuck Simple Addition

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

Adds two numbers and outputs the result as a character.

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Brainfuck Multiply Two Numbers

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

Multiplies two small numbers and outputs the result.

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Brainfuck Print Numbers 0-9

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

Prints ASCII characters for numbers 0 to 9.

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Brainfuck Echo Input

,.

Reads a single character from input and outputs it.

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Brainfuck Loop Example

+++++[.-]

Decrements a value and outputs until zero.

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Brainfuck Print 'A'

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

Outputs the ASCII character 'A'.

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Brainfuck Print Alphabet

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

Prints uppercase letters A-Z sequentially.

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Brainfuck Simple Subtraction

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

Subtracts two values and outputs the result.

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Brainfuck Clear Cell

+++++[-]

Sets a memory cell to zero.

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Brainfuck Hello Brainfuck

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

Prints 'Hello Brainfuck' as a Brainfuck program.

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Frequently Asked Questions about Brainfuck

What is Brainfuck?

What are the primary use cases for Brainfuck?

Learning low-level computation concepts. Understanding memory manipulation and pointer arithmetic. Programming challenges and contests. Code obfuscation and esoteric programming exploration. Benchmarking minimal interpreters and compilers

What are the strengths of Brainfuck?

Extremely minimal and lightweight. Excellent for learning low-level programming and memory manipulation. Turing-complete with minimal constructs. Fun for code-golf and programming puzzles. Widely supported by interpreters and compilers for experimentation

What are the limitations of Brainfuck?

Very hard to write, read, and debug. No standard library or abstractions. Not suitable for practical software development. Error-prone due to pointer and loop management. Limited industrial or research applications

How can I practice Brainfuck typing speed?

CodeSpeedTest offers 11+ real Brainfuck code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.

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Code Sample Descriptions

Hello World in Brainfuck

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

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

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Brainfuck Simple Addition

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

Adds two numbers and outputs the result as a character.

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Brainfuck Multiply Two Numbers

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

Multiplies two small numbers and outputs the result.

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Brainfuck Print Numbers 0-9

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

Prints ASCII characters for numbers 0 to 9.

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Brainfuck Echo Input

,.

Reads a single character from input and outputs it.

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Brainfuck Loop Example

+++++[.-]

Decrements a value and outputs until zero.

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Brainfuck Print 'A'

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

Outputs the ASCII character 'A'.

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Brainfuck Print Alphabet

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

Prints uppercase letters A-Z sequentially.

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Brainfuck Simple Subtraction

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

Subtracts two values and outputs the result.

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Brainfuck Clear Cell

+++++[-]

Sets a memory cell to zero.

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Brainfuck Hello Brainfuck

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

Prints 'Hello Brainfuck' as a Brainfuck program.

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Frequently Asked Questions about Brainfuck

What is Brainfuck?

What are the primary use cases for Brainfuck?

What are the strengths of Brainfuck?

What are the limitations of Brainfuck?

How can I practice Brainfuck typing speed?

CodeSpeedTest offers 11+ real Brainfuck code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.