static void ReferenceTypeAssignment()
{
Console.WriteLine("Assigning reference types\n");
PointRef p1 = new PointRef(10, 10);
PointRef p2 = p1;
// Print both point refs
p1.Display();
p2.Display();
// Change p1.X and print again
p1.X = 100;
Console.WriteLine("\n=> Changed p1.X\n");
p1.Display();
// Since p2 tracks the same reference, it's X value also changes
p2.Display();
}