class Point {

    private double _x;
    private double _y;

    public Point(double x, double y) {
        this._x = x;
        this._y = y;
    }

    public Point() {
        this._x = 0;
        this._y = 0;
    }

    public double XPoint
    {
         get { return _x; }
         set { _x = value; }
    }

    public double YPoint
    {
         get { return _y; }
         set { _y = value; }
    }
}