class Point {
  public int X;
  public int Y;
}

// Нарисовать карту памяти по шагам:

static void Main() {
  // 1
  var ps = new Point[] {
  new Point(),
  new Point(),
  new Point()
  };
  // 2
  var es = new Point[0];
  // 3
  var ns = new Point[4];
  // 4
  ns[2] = ps[2]
  // 5
  ps[2].X = 5;
  // 6
  var d = 2.0;
  // 7
  var xs = new double[3];
  xs[2] = 5;
  // 8
  var ys = new double[3];
  ys[1] = xs[2];
  xs[2] = 4;
  //9
}