3x

3x is a stack-based esolang. It is inspired mainly by 1+ in that 3 is the only literal. Stack items can be any rational number.

Commands

Command	Meaning
`3`	Pushes 3 to the stack
`x`	Pop `A`, `B`, and `C`, and push `(A-B)/C`
`?`	Push 1 number from input
`!`	Pop and print top of stack
`v`	Pop `A` and `B`, store `A` in variable `B`
`^`	Pop `A`, push value of variable `A` (3 if unassigned)
`#`	Swap top 2 items
`(...)`	Loop while top value isn't 0 (like BF `[]`)
`[...]`	Print `...`

Hello World

[Hello World]

Truth Machine

?([1])[0]

Multiply 2 Numbers (Note: Potentially incorrect, see discussion)

??3#v3333x3x3333x3x3^x(3#v3333x3x3333x3x3^x#3#v3^3^(3#v3333x3x3333x3x3^x#3#v3333x3x33333xx3^x#)#)!