static void Main(string[] args)
{
Angle angle = new Angle();
angle.X = 5;
angle.Y = 10;
Console.WriteLine(angle);
var p1 = new MutaBlePoint(1, 2);
var p2 = p1;
p2.Y = 200;
Console.WriteLine($"{nameof(p1)} after{nameof(p2)}is modfied:{p1}");
Console.WriteLine($"{nameof(p2)}:{p2}");
MutateAndDisplay(p2);
Console.WriteLine($"MutateAndDisplay{nameof(MutateAndDisplay)},{nameof(p2)},{p2}");
}
private static void MutateAndDisplay(MutaBlePoint p)
{
p.X = 100;
Console.WriteLine($"Point mutated in a method:{p}");
}
