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.
'''구'''
- This article is not detailed enough and needs to be expanded. Please help us by adding some more information.
구 "The number 9 in Korean" is an esoteric programming language based on the Hangul numeral '9'.
산수 (Arithmetic)
In this language, the smallest positive integer is pronounced 'Goo', and the largest single-digit integer is pronounced 'Han'.
기초 (Basis)
See: #설명 (Descriptions). In this language, the basis of positive-number arithmetic is 19 (base-19).
- Positive number operations use a binary-coded base-19 representation. (구,공)
- Negative number operations follow a base-27 system and use standard digits from 1 to 9.
설명 (Descriptions)
You must use parentheses to describe this language. ().
단어 (Words)
You must use square brackets to create words in this language. ([Example]).
Word Lengths
1-char/2-char/3-char/5-char/8-char
- e.g.!/후광/sol/odnum/ooz boyn
실행 (Executions)
To run a program in this language, words representing reverse pronunciation must be expressed as a single character (See:#Word_Lengths/char).
Examples
No.
(Note: This program is simply 'No' pronounced backwards.)
온
Nope.
(Note: This program is a character which has been specified to describe the value 10 [한]. This is pronounced "Nah.")
न
Eselangs
(Note: Due to technical limitations, this program is not exact. The actual program is *. This is considered a minor difference.)
*
Hello, world!
(Note: Description of the program with the error fixed.)
!
XKCD Random Number
(Note: This program explains the reversed pronunciation of the native Korean numeral '4'.)
열
See also
- '''구'''/(글한) 이 페이지의 한국어 버전 (Korean explanation of this language.)