class Vect2 (val x: Float, val y: Float) {}

def add(other:  Vect2*):Vect2 = {
  var xTot = 0f; var yTot = 0f
  other.foreach(pt => {xTot += pt.x; yTot += pt.y})
  new Vect2(xTot, yTot)
}

add(new Vect2(3,4), new Vect2(3,4), new Vect2(3,4))