The Switch function argument list consists of pairs of expressions and values. The expressions are evaluated from left to right, and the value associated with the first expression to evaluate to True is returned. If the parts aren't properly paired, a run-time error occurs. For example, if expr-1 is True, Switch
returns value-1. If expr-1 is False, but expr-2 is True, Switch returns value-2, and so on.
Switch(expr-1, value-1[, expr-2, value-2 … [, expr-n,value-n]])