using System;

public class Program

{

    public struct Point 

    {

        public Point(double x, double y) {

            X = x;

            Y = y;

        }

        public double X { get; init; }

        public double Y { get; init; }

        public override string ToString() => $"({X}, {Y})";

    }

    public static void Main()

    {

        var p1 = new Point(10, 10);

        var p2 = p1 with { Y = 12 };

        Console.WriteLine(p1);

        Console.WriteLine(p2);

        var a1 = new { X = 10, Y = 10} ;

        var a2 = a1 with {X = 12 };

        Console.WriteLine(a1);

        Console.WriteLine(a2);

    }

}