We are currently working on new rules for what content should and shouldn't be allowed on this website, and are looking for feedback! See Esolang:2026 topicality proposal to view and give feedback on the current draft.
extendedFuck
Jump to navigation
Jump to search
ExtendedFuck (shorthand bf4h) is a brainfuck derivative by User:TeslaX93 designed in February 2024. It adds some useful commands to Brainfuck.
Instructions
Current instruction set
| Instruction | Description |
|---|---|
| < | Move the pointer left |
| > | Move the pointer right |
| + | Increment the value of the current cell |
| - | Decrement the value of the current cell |
| . | Output the ASCII value of the current cell |
| , | Input character and stores it to the current cell |
| [ | Jump if zero (begin loop) |
| ] | Jump unless zero (end loop) |
| ^ | Clears current cell value (sets to zero) |
| ? | Puts random value (0-255) in current cell |
| : | Output the numerical value of current cell |
| _ | Open file named customNNN.txt (where NNN is a number 000-255) located in the same folder as script and print it |
| = | Open file named customNNN.exf (where NNN is a number 000-255) located in the same folder as script and run it |
| / | Copy current cell value on a stack. |
| \ | Removes cell from top of the stack and puts it in current cell |
Examples
2024
Displays "2024".
++:>:<:++:
Cat
^[>,.<]