1 Input: A text string, using prompt
Output: either"valid name" or "invalid name",depending on whether the input names fit the required format, which is Last name, first name, middle initial
where neither of the names can have more than 15 characters
2 Input : A line of text, using prompt.
Output: The words of the input text, in alphabetical order.
3 Function: e_names
Parameter: An array of names, represented as string.
Returns : the number of names in the given array that ens in either "ie" or "y".
4 Function: first_vowel
Parameter: A string.
Returns : the position in the string of the leftmost vowel.