var answer = 0

var banana = 0

​

function setup() {

  createCanvas(400, 400);

  button = createButton('CONVERT m/s to km/h!');

  button.position(0, 0);

  button.mousePressed(alrt);

}

​

function draw() {

  background(220);

  text(banana, 50, 50)

}

​

//------------------------------

​

function alrt() {

  banana = convert(prompt("How many m/s?"))

  return banana

}

​

function convert(num){

  var answer = num * 3.6

  return answer

}