#include <string>
#include <iostream>
#include <vector>

using namespace std;

class Person
{
public:
Person(string name);
virtual void display() const;
string get_name() const;
void set_name(string name);
string get_birthDay() const;
void set_birthDay(string birthDay);
private:
string name;
string birthDay;
};

Person::Person(string name)
{
this->name = name;
}

string Person::get_name() const
{
return name;
}

void Person::set_name(string name)
{
this->name = name;
}

string Person::get_birthDay() const
{
return birthDay;
}

void Person::set_birthDay(string birthDay)
{
this->birthDay = birthDay;
}

void Person::display() const
{
cout << get_name() << " " << get_birthDay() << endl;
}

class Student : public Person
{
public:
Student(string name, string major);
virtual void display() const;
string get_major() const;
void set_major(string major);
private:
string major;
};

Student::Student(string name, string major)
:Person(name)
{
this->major = major;
}

string Student::get_major() const
{
return major;
}

void Student::set_major(string major)
{
this->major = major;
}

void Student::display() const
{
cout << get_name() << " " << get_major() << endl;
}
int main()
{
vector <Person*> person_list;
person_list.push_back(new Student("Student","IT"));
//person_list.push_back(new Instructor("Instrructor", 2500));

for(int count=0; count< person_list.size(); count++)
{
    person_list[count]->display();
}

return 0;
}