// -*- java -*-

using System.Collections;

class csharp {
    struct s_point {
	public int x, y;
    }

    class point {
	public int x, y;
    }

    static string show(string[] a) {
	return System.String.Join(" ", a);
    }

    static string show(ArrayList p) {
	string s = "";
	foreach (string e in p) s += e + " ";
	return s;
    }

    static string show(s_point p) {
	return "{ x = " + p.x + ", y = " + p.y + " }";
    }

    static string show(point p) {
	return "Point(" + p.x + ", " + p.y + ")";
    }

    static void Main() {
	int i = 1;
	int i2 = i;
	i2++;
	System.Console.WriteLine("i2: " + i2 + "\n" + " i: " + i);

	string s = "hello";
	string s2 = s;
	s += "!";
	System.Console.WriteLine("s2: " + s2 + "\n" + " s: " + s);


	string[] a = { "hello", "" };
	string[] a2 = a;
	a2[1] = "world";
	System.Console.WriteLine("a2: " + show(a2) + "\n" + " a: " + show(a));

	ArrayList l = new ArrayList();
	l.Add("hello");
	ArrayList l2 = l;
	l2.Add("world");
	System.Console.WriteLine("l2: " + show(l2) + "\n" + " l: " + show(l));

	s_point sp;
	sp.x = 0; sp.y = 1;
	s_point sp2 = sp;
	sp2.x++; sp2.y++;
	System.Console.WriteLine("sp2: " + show(sp2) + "\n" + " sp: " + show(sp));

	point p = new point();
	p.x = 0; p.y = 1;
	point p2 = p;
	p2.x++; p2.y++;
	System.Console.WriteLine("p2: " + show(p2) + "\n" + " p: " + show(p));
    }
}