/********************************************************************************************
 ***   FILE: virtual_methods.cpp
 ***   DATE: 03/01/2004
 *** AUTHOR: Daniel Dementiev
 ***   GOAL: This is an example program for IST482 class. It illustrates how we can use
 ***         dynamic binding by soecifying methods as virtual.
 ********************************************************************************************/

#include <iostream>
#include <string>

using namespace std;

class Person {
   protected:
      string name;
   public:
      Person() : name("unknown") {};
      Person(char *n) : name(n) {};
      virtual void Print() const { cout<<"Person::Print(): "<<name; };
      virtual void PrintAll() const {};
};

class Student : public Person {
   private:
      float gpa;
   public:
      Student() : gpa(0) {};
      Student(char *name, float GPA) : Person(name), gpa(GPA) {};
      void Print() const { cout<<"Student::Print(): "<<gpa; };
      void PrintAll() const { cout<<"Student::PrintAll(): "; Person::Print(); cout<<": "<<gpa; };
};


void main()
{
	Person *person = new Student("Bob Tester", 3.90);
	cout<<"Pointer to an object Person:\n";
	person->Print();       // calling Student::Print()
	cout<<endl;
	person->PrintAll();    // calling Student::PrintAll()
}

/********************************************************************************************/