Write a program which asks the user to enter their first name and then display each character of their name on a separate line.

If no name is entered, inform the user accordingly.

If the name is valid then use a for loop to display the character number and each character of their name on a separate line. A valid name is one which contains only alphabetic characters excluding any possible name separators such as a space or a $-.$

At the end, display the number of alphabetic letters entered.

Enter 'ermintrude", get

$1$ E

$2$ r

$3$ m

$4$ i

$5$ n

$6$ t

$7$ r

$8$ u

$9$ d

$10$ e

but if enter no value for the user's first name, display 'You did not enter any characters.$\text{'}$

if enter 'Erm$1$ntrude" for the first name, display 'Non alphabetic characters were entered.$\text{'}$