virtual_functions.cpp

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

static int professorID, studentID;

class Person {
private:
    string name;
    int age;

public:
    virtual void getdata() {
        cin >> name;
        cin >> age;
    }
    virtual void putdata() {
        cout << name << " " << age << " ";
    }
};

class Professor : public Person {
private:
    int publication;
    int id;

public:
    Professor() {
        professorID++;
    }

    void getdata() {
        Person::getdata();
        cin >> publication;
        id = professorID;
    }

    void putdata() {
        Person::putdata();
        cout << publication << " " << id << endl;
    }
};

class Student : public Person {
private:
    int marks[6];
    int id;


public:
    Student() {
        studentID++;
    }

    void getdata() {
        Person::getdata();
        for(int i = 0; i < 6; ++i)
            cin >> marks[i];
        id = studentID;
    }

    void putdata() {
        Person::putdata();
        int sum = 0;
        for(int i = 0; i < 6; ++i)
            sum += marks[i];
        cout << sum << " " << id << endl;
    }
};

int main() {

    int n, val;
    cin>>n; //The number of objects that is going to be created.
    Person *per[n];

    for(int i = 0;i < n;i++){

        cin>>val;
        if(val == 1){
            // If val is 1 current object is of type Professor
            per[i] = new Professor;

        }
        else per[i] = new Student; // Else the current object is of type Student

        per[i]->getdata(); // Get the data from the user.

    }

    for(int i=0;i<n;i++)
        per[i]->putdata(); // Print the required output for each object.

    return 0;
}