[C++] Virtual Functions

https://www.hackerrank.com/challenges/virtual-functions/problem?isFullScreen=true

Virtual Functions | HackerRank

 

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


class Person {
public:
    string name;
    int age;
    
    Person() {}
    virtual void getdata() {};
    virtual void putdata() {};
    virtual ~Person() {}
};


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


class Student : public Person {
public:
    static int id;
    int cur_id;
    int marks[6];
    int marks_total {0};
    
    Student() : Person() {
        Student::id++;
        cur_id = Student::id;
    }
    virtual void getdata() override {
        string _name;
        int _age;
        cin >> _name;
        cin >> _age;
        this->name = _name;
        this->age = _age;
        for (int i=0; i<6; i++) {
            cin >> marks[i];
            marks_total += marks[i];
        }
    }
    virtual void putdata() override {
        cout << this->name << " ";
        cout << this->age << " ";
        cout << this->marks_total << " ";
        cout << this->cur_id << endl;
    }
};


int Professor::id {0};
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;

}