Eversoft Eraser Company has a list of the customers' names (not in alphabetical order) and telephone numbers in a file named customer with records of the following form: Last name, first name, phone number
a. Allow the user to input a last name; then search the file and display all ames and phone numbers corresponding to that last name.
b. Load the file into parallel arrays and display the list of customers' names and phone numbers in alphabetical order.