yes or no?
You're working on an interactive text-based menu that asks the user Yes-or-No questions. Users are supposed to reply with just 'y' or 'n', but sometimes they add other characters, such as "yes" or "no".
Complete a method that checks the first character of a String and returns an String according to the following table:
|first character of input||return following String|
(Note: all input will be lowercase.)