// Test string class.
public static void Main( )
{
    string s = "chicago";
    char[] a = { 'x', 'm', 'e', 'm', 'p', 
                 'h', 'i', 's', 'r', 'u' };
    string t = new string(a, 1, 7);

    Console.WriteLine("{0} {1}", s, t);
    string u = String.Format("{0} {1}", s, t);
    Console.WriteLine(u);

    Console.WriteLine(s.CompareTo(t));
    Console.WriteLine(t.CompareTo(s));
    Console.WriteLine(s.CompareTo("chicago"));
    
    string v = "     new york   ";
    Console.WriteLine(v.Trim( ));
    string w = "*******minneapolis****";
    Console.WriteLine(w.Trim('*'));

    Console.WriteLine(s.ToUpper( ));

    Console.ReadLine( );
}