function setup() {
  createCanvas(200, 200);
  rectMode(CENTER);
  background(245);
  noFill();

  // Test with different parameters
  // sqircle(100, 100, 140, 1);
  sqircle(100, 100, 150, 3);
  // sqircle(100, 100, 180, 5);
  // sqircle(100, 100, 200, 12);
}

function sqircle(x, y, diameter, count) {
  // [Your Code Here]
  angleMode(DEGREES);
  list_diameter = [];

  // 1 set square and circle
  circle(x, y, diameter);
  square(x, y, diameter);
  list_diameter.push(diameter);

  for (i = 1; i < count; i++) {
    new_diameter = (list_diameter[i - 1] / 2) * cos(45) * 2;
    circle(x, y, new_diameter);
    square(x, y, new_diameter);
    list_diameter.push(new_diameter);
  }
}