in C++,
design various classes and write a program to
computerize the billing system of a hospital.
a. Design the classdoctorType, inherited from the classpersonType,
defined in Chapter 10, with an additional data member to store a
doctor’s speciality. Add appropriate constructors and member func-
tions to initialize, access, and manipulate the data members.
b. Design the class billType with data members to store a patient’s
ID and a patient’s hospital charges, such as pharmacy charges for
medicine, doctor’s fee, and room charges. Add appropriate construc-
tors and member functions to initialize, access, and manipulate the
data members.
c. Design the class patientType, inherited from the class
personType, defined in Chapter 10, with additional data members
to store a patient’s ID, age, date of birth, attending physician’s name,
the date when the patient was admitted in the hospital, and the date
when the patient was discharged from the hospital. (Use the class
dateType to store the date of birth, admit date, discharge date, and
the class doctorType to store the attending physician’s name.) Add
appropriate constructors and member functions to initialize, access,
and manipulate the data members.
d. Write a program to test your classes.