8. Dynamic memory management with pointers

#include <cstdlib>  // Standard General Utilities Library
#include <cstdio>   // Input/Output operations (C)
#include <iostream> // Input/Output stream objects
#include <iomanip>  // Input/Output manipulator

using namespace std;

class studentas {
private:

public:
    long id;
    double avg;
    studentas *next;
};

void AddFirst(studentas *first) {
    cout << "Iveskite ID: "; cin >> first->id;
    cout<< "Iveskite vidurki: "; cin >> first->avg;
    first->next = NULL;
}

void Add(studentas *last) {
    while (last->next != NULL)
        last = last->next;

    studentas *newlast = new studentas;

    cout << "\nIveskite ID: "; cin >> newlast->id;
    cout<< "Iveskite vidurki: "; cin >> newlast->avg;

    newlast->next = NULL;
    last->next = newlast;
}

void print(studentas *last) {
    while (last->next != NULL)
    {
        cout << "\nID: " << last->id << endl;
        cout <<"Vidurkis: " << last->avg << endl;

        last = last->next;
    }
    cout << "\nID: " << last->id << endl;
    cout <<"Vidurkis: " << last->avg << endl;

}

// Main program
int main(int argc, char *argv[]) {

    studentas *first = new studentas;

    AddFirst(first);
    for (int i = 0; i < 2; i++)
        Add(first);

    print(first);



    return 0;
}