Using classes, design an online address book to keep track of the names, addresses, phone numbers and dates of birth of family members, close friends, and certain business associates. your program should be able to handle a maximum of 500 entries.
a. define a class, addresstype, than can store a street address, city, state, and zip code. use the appropriate functions to print and store the address. also, use constructors to automatically initialize the data members.

b. define a class extpersontype using the class persontype(as shown below), the class datatype (as shown below), and the class addresstype. add a data member to this class to classify the person as a family member, friend, or business associate. also, add and store the appropriate information. use constructors to automatically intialize the data members.