// try a vector of pointers to Students!
#include <string>
#include <iostream>
#include <vector>

using namespace std;


class Student{
public:
	Student(){}
	string type(){ return "other"; }
};
class Undergraduate : public Student{
public:
	Undergraduate(){}
	string type(){ return "undergraduate"; }
};
class Graduate : public Student{
public:
	Graduate(){}
	string type(){ return "graduate"; }
};

int main()
{
	vector <Student*> cs595(3);
	Student a;
	Undergraduate b;
	Graduate c;
	cout << "a.type() =" << a.type() << endl;
	cout << "b.type() =" << b.type() << endl;
	cout << "c.type() =" << c.type() << endl;

	cs595[0] = &a;
	cs595[1] = &b;
	cs595[2] = &c;

	for(int i=0; i<3; ++i)
		cout << "cs595["<<i<<"]->type() =" <<cs595[i]->type() << endl;
}