// https://editor.p5js.org/whatmakeart/sketches/pTLKbwWNp

let number1 = 2;

let number2 = 24;

let myNumber;

let operation = "add";

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

}

​

function jimmysCalculator(a, b, operation) {

  let result;

  if (operation === "add") {

    result = a + b;

  } else if (operation === "subtract") {

    result = a - b;

  }

  return result;

}

​

function mousePressed() {

  if (mouseButton === LEFT) {

    operation = "add";

    console.log("Added " + number2);

  }

  if (mouseButton === CENTER) {

    operation = "subtract";

    console.log("Subtracted " + number2); 

  }

  myNumber = jimmysCalculator(number1, number2, operation);

  number1 = myNumber;

  console.log(myNumber);

}

​