static void Main(string[] args)
{
//Point point = new Point(10, 20);
//Point point2 = point;
//point2.x = 56;
//Console.WriteLine($"x = {point.x} y = {point.y}");
//Console.WriteLine($"x = {point2.x} y = {point2.y}");
Point p = new Point("Some point", 10, 20);
Point p2;
p2 = p;
Point p3 = new Point("P#3", -5, 11);
//p2.SetX(50);
DemoPoint(p2);
Console.WriteLine($"x = {p.GetX()} y = {p.GetY()}");
Console.WriteLine($"x = {p2.GetX()} y = {p2.GetY()}");
Console.WriteLine($"Counter = {Point.counter}");
//обращение к статическим данным класса Point
Point res = Point.Sum(p2, p3);
Console.Read();
}