Write an interactive, file-oriented C program that will maintain a list of names, addresses and telephone numbers in alphabetical order (by last names). Process the information associated with each name as a separate record.
Represent each record as a structure.
Include a menu that will allow the user to select any of the following features:
(a) Add a new record.
(b) Delete a record.
(c) Modify an existing record.
(d) Retrieve and display an entire record for a given name.
(e) Generate a complete list of all names, addresses and telephone numbers.
v) End the computation.
Be sure to rearrange the records whenever a new record is added or a record is deleted, so that the records are always maintained in alphabetical order.