creating node in c 2b 2b

1#include <iostream>
2
3using namespace std;
4
5struct node
6{
7    int data;
8    node *next;
9};
10
11class linked_list
12{
13private:
14    node *head,*tail;
15public:
16    linked_list()
17    {
18        head = NULL;
19        tail = NULL;
20    }
21
22    void add_node(int n)
23    {
24        node *tmp = new node;
25        tmp->data = n;
26        tmp->next = NULL;
27
28        if(head == NULL)
29        {
30            head = tmp;
31            tail = tmp;
32        }
33        else
34        {
35            tail->next = tmp;
36            tail = tail->next;
37        }
38    }
39};
40
41int main()
42{
43    linked_list a;
44    a.add_node(1);
45    a.add_node(2);
46    return 0;
47}

1#include <iostream>
2
3using namespace std;
4
5struct node
6{
7    int data;
8    node *next;
9};
10