// Define and use a class that utilizes the virtual function's concept.
// Assignment-29
// virtprs.cpp, Author - Krishna Kumar Khatri.

// Uncomment ONLY the following line if you are using Turbo/Borland compiler.
// #define TC
#ifdef TC
	#include <iostream.h>
#else
	#include <iostream>
	using namespace std;
#endif
#include <conio.h>  // For getch.
const int MAXLEN = 50;

#ifdef TC
	enum bool {false, true};
#endif

class Person
{
        char* name;
        char dob[11];
    public:
        Person() : name(new char[MAXLEN])
            { }
        virtual void getdata();     // Will be overriden.
        virtual void putdata();     // Will be overriden.
		virtual bool outstanding() = 0; // Pure virtual function.
};

void Person::getdata()
{
	cout << flush << "Enter name: "; cin.getline(name, MAXLEN, '~');
    cout << "Enter DoB (mm/dd/yyyy): "; cin >> dob;
}

void Person::putdata()
{
	cout << endl << name;
    cout << ", DoB: " << dob;
    cout << ", Outstanding: ";
    outstanding() ? cout << "Yes" :
                    cout << "No";
}

class Student : public Person
{
		float gpa;  // Avg grade point.
    public:
        void getdata();
        void putdata();
        bool outstanding();
};

void Student::getdata()
{
    Person::getdata();
    cout << "Enter GPA: "; cin >> gpa;
}

void Student::putdata()
{
    Person::putdata();
    cout << ", GPA: " << gpa;
}

bool Student::outstanding()
	{ return gpa > 90.0 ? true : false; }

class Professor : public Person
{
        int numpubs;    // Number of papers published.
	public:
        void getdata();
        void putdata();
        bool outstanding();
};

void Professor::getdata()
{
    Person::getdata();
    cout << "Enter number of papers published: "; cin >> numpubs;
}

void Professor::putdata()
{
    Person::putdata();
	cout << ", Papers published: " << numpubs;
}

bool Professor::outstanding()
    { return numpubs > 100 ? true : false; }

int main()
{
    #ifdef TC
        clrscr();
    #endif
    Student std;
    Professor pfs;
    Person* prs;

    prs = &std;
    prs->getdata();
	prs->putdata();

	cout << endl << endl;

	prs = &pfs;
	prs->getdata();
	prs->putdata();

	cout << endl << endl << "Program over. Press any key to exit...";
	getch();
	return 0; // Successful termination.
}