User:Unname4798/Esolangs/Deadfsh

I am not signed up on Esolang Wiki. Deadfsh is an esoteric programming language like Deadfish, but this one doesn't have an increment command.

Commands

D: Decrement
S: Square
O: Output

Interpreter

var input = "dso";
var number = 0;
for (var i = 0; i < input.length; i++) {
 if (input[i] == "d") {
  number -= 1;
 }
 if (input[i] == "s") {
  number *= number;
 }
 if (input[i] == "o") {
  console.log(number);
 }
}