Treatment.cs

using System;

namespace Hospital

{

            class Treatment

            {
                                    private String Date;

                                    private String StartTime;

                                    private String EndTime;

                                    public String getDate() { return Date;}

                                    public String getStartTime() { return StartTime; }

                                    public String getEndTime() { return EndTime; }

                                    public void setDate(String date) { Date = date; }

                                    public void setStartTime(String time) { StartTime = time; }

                                    public void setEndTime(String time) { EndTime = time; }
            }

}

Person.cs

using System;

namespace Hospital

{

            class Person

            {

                        private System.String Name;

                        private System.String DateOfBirth;

                        public String getName() { return Name; }

                        public String getDob() {return DateOfBirth; }

                        public void setName(String name) { Name = name; }

                        public void setDob(String date) { DateOfBirth = date; }

            }

}

DoctorPerson.cs

using System;

namespace Hospital

{

            class DoctorPerson:Person

            {

                        private System.String DateEmployed;

                        private System.String Specialty;

                        public String getDateEmployed() { return DateEmployed; }

                        public String getSpecialty() { return Specialty; }

                        public void setDateEmployed(String date) { DateEmployed = date; }

                        public void setSpecialty(String specialty) { Specialty = specialty; }

            }

}

PatientPerson.cs

using System;

namespace

{

            class PatientPerson:Person

            {

                        private System.String Employer;

                        private System.String InsuranceCo;

                        private Treatment[] treatment

                        public String getEmployer() { return Employer; }

                        public String getInsuranceCo() { return InsuranceCo; }

                        public void setEmployer(String person) { Employer = person; }

                        public void setInsuranceCo(String company) { InsuranceCo = company; }

                        public String getTreatmentDate(int i) { return treatment[i].getDate(); }

                        public String getStartTime(int i) { return treatment[i].getStartTime(); }

                        public String getEndTime(int i) { return treatment[i].getEndTime(); }

                        public void setTreatmentDate(int i, int date) { treatment[i].setDate(date); }

                         public void setStartTime(int i, int date) { treatment[i].setStartTime(date); }

                       public void setEndTime(int i, int date) { treatment[i].setEndTime(date); }

            }

}