#175 – The default Clause of a switch Statement

Normally, if the value of the expression in a switch statement doesn’t match any of the values listed in the case clauses, control falls through the switch statement and none of the clauses are executed.

Optionally, you can provide a default clause, which will get executed if none of the case clauses are satisfied.

            switch (surname)       // surname is a string
            {
                case "Aarhus":
                case "Enevoldsen":
                    Console.WriteLine("Norwegian");
                    break;
                case "Brosnan":
                case "McGill":
                    Console.WriteLine("Irish");
                    break;
                case "Afonso":
                case "Silva":
                    Console.WriteLine("Portuguese");
                    break;
                default:
                    Console.WriteLine("UNKNOWN origin");
                    break;
            }