createCanvas(400, 400);

}

​

function draw() {

  background(220);

  // Make a calculation by calling plus5().

  let ans = plus5(10);

  // Style the text.

  textAlign(CENTER);

  textSize(30);

  // Display the text.

  text(`10 + 5 = ${ans}`, width / 2, height / 2);

}

​

function plus5(x) {

  let ans = x + 5;

  return ans;

}