Write a code snippet to show copy constructor?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace CopyConst
{
    class Program
    {
        int x, y;
        public Program(int xx, int yy)
        {
            x = xx;
            y = yy;
        }
        public Program(Program p)
        {
            x = p.x;
            y = p.y;     // Copy constructor
        }
        static void Main(string[] args)
        {
            Program obj1 = new Program(10, 20);
            Console.WriteLine(obj1.x + " " + obj1.y);
            Program obj2 = new Program(obj1);
            Console.WriteLine(obj2.x + " " + obj2.y);
            obj1.x = 50;
            obj1.y = 70;
            Console.WriteLine(obj1.x + " " + obj1.y);
            Console.WriteLine(obj2.x + " " + obj2.y);

            Console.ReadKey();
        }
    }
}

Since the above example consist of two constructors, so we can confirm that the constructor can be overloadable.