This esolang is not a push-down automata
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This esolang is not a push-down automata (or TEISNPDA or simple TEI) is, unlike its name, a push-down automata. It is invented by User:None1.
Memory model
It uses only a stack that can contain nonnegative numbers of any size.
Commands
| Command | Meaning |
|---|---|
0~9 |
Push corresponding number onto the stack |
+ |
Pop a and b, push b+a
|
- |
Pop a and b, push b-a
|
* |
Pop a and b, push b*a
|
, |
Reads an integer and push it onto stack |
. |
Pop a and output as decimal, followed by a space
|
? |
Reads a character and push its ASCII value onto the stack |
! |
Pop a and output as ASCII
|
Other characters (including whitespaces and line feeds) push their ASCII values onto the stack.
Examples
Hello World
H!e!l!l!o! !W!o!r!l!d!184*+!
Nope. interpreter
N!o!p!e!159*+!
One time cat
?!
A+B Problem
,,+.
XKCD Random Number
4.
Polyglot
4.@
Usefulness
The language is pretty useless if you ask me, but you can feed a suffix arithmetic expression with only addition, subtraction and multiplication and one-digit numbers to this language to compute it.
External Resources
- Interpreters for This esolang is not a push-down automata in C#, Java and Python.