C++ Lista inlantuita Simplu(Single linked list)

#include <iostream>
using namespace std;

// A simple CPP program to introduce
// A linked list

class Node {

    public:
        int data;
        Node *next;
};

// Program to create a simple linked
// List with 3 nodes

int main() {

    Node* head = NULL;
    Node* second = NULL;
    Node* third = NULL;

    // allocate 3 nodes in the heap

    head = new Node();
    second = new Node();
    third = new Node();



    head->data = 1; // Assign data in first node
    head->next = second; // Link first node with


    second->data = 2;
    second->next = third;
    third->data = 3;
    third->next = NULL;


    cout << endl;
    cout << second->next;

    Node* temp = head;

    while (temp != NULL) {
        cout << temp->data << " " << endl;
        temp = temp->next;
    }

    system("pause");
}