This code is written in the esoteric programming language called...
September 12, 2025 at 06:24 PM
This code is written in the esoteric programming language called Brainf*ck. Brainf*ck operates on a memory array (or "tape") of cells, all initially set to 0, and a data pointer that starts at the first cell. It uses a very minimalistic set of commands.
Brainf*ck Commands Recap:
>
: Move the data pointer one cell to the right.<
: Move the data pointer one cell to the left.+
: Increment the value of the current cell by 1.-
: Decrement the value of the current cell by 1.[
: Begin a loop. If the current cell is 0, jump to the command after the matching]
.]
: End a loop. If the current cell is non-zero, jump back to the command after the matching[
..
: Output the ASCII value of the current cell as a character.,
: Read one input character and store its ASCII value in the current cell (not used in this case).
Analysis of the Code:
Let’s go through the commands step by step to figure out what is happening.
>++
: Move the pointer to the second cell, increment its value to2
.<
: Move back to the first cell (value is still0
).++++++++
: Increment the first cell's value to8
.[>---<->]
: This is a loop.- As long as the value at the first cell is not
0
, execute the loop:>---
: Move to the second cell and decrement it by3
.<-
: Move back to the first cell and decrement it by1
.>
: Move to the second cell again (to recheck the condition at the first cell).
- Essentially, this loop will decrement both cells (first and second) until the first cell is
0
. Afterward:- The first cell will be
0
. - The second cell will hold a value of
-24
. (The loop runs 8 times, multiplying the decrement of-3
.)
- The first cell will be
- As long as the value at the first cell is not
>
: Move to the second cell.++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
: Increment the value of the second cell by96
. (This turns-24
into+72
.).
: Output the value of the second cell (72
) as an ASCII character. ASCII72
corresponds to the letterH
.+
: Increment the second cell by1
.
Final Behavior:
The program outputs the character H
, then increments the second cell by 1 (effectively holding 73
now, which corresponds to the ASCII character I
, but it does not output this).
So, this code outputs the single character H
.
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