1) Eversoft Eraser Company has a list of names of the customers` (not in alphabetical order) and the telephone numbers in the file named customer with the records of following form: Last name, first name, phone number

a) Enable the user to input the last name; then search file and display all the names and phone numbers corresponding to that last name.

b) Load the file into the parallel arrays and show the list of customers` names and phone numbers in the alphabetical order.