public static void Main()
{
var person = new Person(31, "James");
Console.WriteLine(person.BuildMessage());
var doctor = new Doctor(60, "The Doctor");
doctor.UpdateAge(62);
Console.WriteLine(doctor.BuildMessage());
var things = new Dictionary <string, string>();
things.Add("Marty", "McFly");
things.Add("Jason", "Thamboy");
things.Add("Roger", "Pinup-Panella");
foreach (var item in things)
{
Console.WriteLine(item.Key + ": " + item.Value);
}
}