interface IPoint { // Property signatures: int x { get; set; } int y { get; set; } } class Point : IPoint { // Fields: private int _x; private int _y; // Constructor: public Point(int x, int y) { _x = x; _y = y; } // Property implementation: public int x { get { return _x; } set { _x = value; } } public int y { get { return _y; } set { _y = value; } } } class MainClass { static void PrintPoint(IPoint p) { Console.WriteLine("x={0}, y={1}", p.x, p.y); } static void Main() { IPoint p = new Point(2, 3); Console.Write("My Point: "); PrintPoint(p); } } // Output: My Point: x=2, y=3