I need help with the extPerson class within the problem. I've already defined the classes that this class will extend, however I have no idea how to start this problem. The problem is located below:

Using classes, design an online address book to keep track of the names, addresses, phone numbers, and birthdays of family members, close friends, and certain business associates. Your program should be able to handle a maximum of 500 entries.

a. Define the class Address that can store a street address, city, state, and zip code. Use the appropriate methods to print and store the address. Also, use constructors to automatically initialize the data members.

b. Define the class ExtPerson using the class Person (as defined in Example 8-8, Chapter 8), the classDate (as designed in this chapter's Programming Exercise 2), and the class Address. Add a data member to this class to classify the person as a family member, friend, or business associate. Also, add a data member to store the phone number. Add (or override) methods to print and store the appropriate information. Use constructors to automatically initialize the data members.

c. Define the class AddressBook using previously defined classes. An object of type AddressBookshould be able to process a maximum of 500 entries.

The program should perform the following operations:

i. Load the data into the address book from a disk, or file.

ii. Sort the address book by last name.

iii. Search for a person by last name.

iv. Print the address, phone number, and date of birth (if available) of a given person.

v. Print the names of the people whose birthdays are in a given month or between two given dates.

vi. Print the names of all the people between two last names.

Links to the classes I've built are located below:

https://pastebin.com/0yNVFnNk - person class

https://pastebin.com/M527dnWh - date class

https://pastebin.com/KT4SmYnA - address class

Any help is appreciated!!