// Test Person class.
public static void Main()
{
    Person p = new Person("Alice", 'F', 12);
    Console.WriteLine(p.ToString());
    Console.WriteLine(p);
    Console.WriteLine("{0} {1} {2}", p.Name, p.Gender, p.Age);
    p.HaveBirthday();
    Console.WriteLine(p);
    Console.WriteLine();

    Person q = new Person();
    Console.WriteLine(q);
    q.HaveBirthday();
    Console.WriteLine(q);

    Console.ReadLine();
}
}