EchoLang

EchoLang is an esolang created by I rember in February 2023. It's kind of a mix between ><> and BASIC. It is stack-based, tape-based, AND variable-based, but mostly stack-based.

Here are the commands:

Command	Description
{any number}	Push a number onto the stack.
"{string}"	Push a letter's ASCII value onto the stack. If the string is more than one letter long, each value will be pushed individually.
pop	Pop a value off the stack and discard it.
shout	Pop and print as a number.
say	Pop and print as text.
add	Pop a and b, push a+b.
subtract	Pop a and b, push b-a.
multiply	Pop a and b, push b*a.
divide	Pop a and b, push b/a.
modulo	Pop a and b, push b%a.
and	Pop a and b, and if both are 1, push 1; if not, push 0.
or	Pop a and b, and if either or both are 1, push 1; if not, push 0.
not	Pop, if the value is 0, push 1; if not, push 0.
equal	Pop a and b, and if a=b, push 1; if not, push 0.
greater	Pop a and b, and if b>a, push 1; if not, push 0.
less	Pop a and b, and if b<a, push 1; if not, push 0.
listen	Push user's input.
reverse	Reverse the stack.
swap	Swap the top two items on the stack.
label()	Define a label.
goto()	Go to a label.
goif()	Pop, and go to a label if the value is 1.
gosub()	Go to a label as a subroutine.
subif()	Pop, and go to a label as a subroutine if the value is 1.
return	Return from a subroutine.
returnif	Pop, and return from a subroutine if the value is 1.
locate	Pop, and set the position on the tape to popped value.
location	Push position on the tape.
read	Push value at position on the tape.
write	Pop, and set the value at position on the tape to popped value.
var()	Define a variable.
get()	Push a variable's value.
set()	Pop, and set a variable's value to popped value.

If you attempt to read a value that doesn't exist (e.g. popping when the stack is empty; getting the value of a variable that doesn't exist) or divide by zero, the interpreter will read it as -1.

Programs

Truth Machine

listen
goif()
shout
label()
shout
goto()

Made by ZachChecksOutEsolangs (talk)