Program Design

Standard stuff will be assumed for now on.

1. Declare variables
2. Prompt user for the first string
3. Get a valid response from the user and save it in a variable
4. Prompt user for the second string
5. Get a valid response from the user and save it in a second variable
6. Find out how many are in common and output it.

NOTE:

Most of the work is done in the methods. I recommend you write the methods in the order outlined in lab discussion and get them to work before you write the main method. This design is for the main method.