2. Hackerrank virtual function solution

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
class Person {
public:
    string name;
    int age;
    virtual void getdata() {
        cin >> this->name >> this->age;
    }
    virtual void putdata() {
        cout << this->name << " " << this->age << endl;
    }
};

class Professor : public Person {
public:
    Professor() {
        this->cur_id = ++id;
    }
    int publications;
    static int id;
    int cur_id;
    void getdata() {
        cin >> this->name >> this->age >> this->publications;
    }
    void putdata() {
        cout << this->name << " "
            << this->age << " "
            << this->publications << " "
            << this->cur_id << endl;
    }
};
int Professor::id = 0;

class Student : public Person {
#define NUM_OF_MARKS 6
public:
    Student() {
        this->cur_id = ++id;
    }
    int marks[NUM_OF_MARKS];
    static int id;
    int cur_id;
    void getdata() {
        cin >> this->name >> this->age;
        for (int i=0; i<NUM_OF_MARKS; i++) {
            cin >> marks[i];
        }
    }
    void putdata() {
        int marksSum = 0;
        for (int i=0; i<NUM_OF_MARKS; i++) {
            marksSum += marks[i];
        }
        cout << this->name << " "
            << this->age << " "
            << marksSum << " "
            << this->cur_id << endl;
    }
};
int Student::id = 0;

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;

}