$1$: Write a program that identifies all the vowels in a string which is entered by a user.

$2$: Write a program that takes all the letters of a string which is entered by a user and prints them out in

reverse order. Your code should ignore any nonletters in the string.

Make sure you use meaningful variable names and that you add comments to your code.

You should submit your code and a sample of the input and output in a single pdf document.

with c$++$