Inputer

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Inputer is a stack-based esolang by User:ChuckEsoteric08 which is based on inputing and inspired by Volatile.

Commands

Command	Operation
'	input number and push it to the stack.
+	pop two number, a and b, push b+a.
-	pop two number, a and b, push b-a.
*	pop two number, a and b, push b*a.
/	pop two number, a and b, push b/a.
!	NOP, but needs to match with ?.
?	pop top element and if it is not equal to element on the top go back to matching !.
(...)	loop while top element is not zero.
#	debug command. Outputs stack.

Examples

Cat program

A one-time cat program is implemented in the following:

'#

A repeating cat program, which terminates on a user input of zero, comprises this:

'#('#)

Truth-machine

This program aspires to approximate a truth-machine:

'(#)#

Number guessing game

This example program simulates a number guessing game, querying the user for the correct answer, then letting him probe for the same, while concomitantly printing each twain on the stack:

'!'#?

Addition

The throughout simplistic program below queries the user for two numbers, pushes their sum unto the stack, and prints the result:

''+#

Computational class

It is Turing-complete by reduction from VolatiIO, version of Volatile where ~ inputs a number and push it to the stack:

+-*/() are the same

VolatilIO	Inputer
~	'
:	Unknown

Interpreter

• Common Lisp implementation of the Inputer programming language.