Implement insertion of node at the end of list in singly linked list in C++

Code

#include <iostream>

using namespace std;

class Node
{
public:
    int data;
    Node *next;
};

void insertend(Node **head, int data)
{
    Node *newnode = new Node();
    newnode->data = data;
    newnode->next = NULL;
    if (*head == NULL)
    {
        *head = newnode;
        return;
    }
    Node *last = *head;
    while (last->next != NULL)
    {
        last = last->next;
    }
    last->next = newnode;
}

void printlist(Node *head)
{
    while (head != NULL)
    {
        cout << head->data << " ";
        head = head->next;
    }
}

int main()
{
    Node *head = NULL;
    insertend(&head, 1);
    insertend(&head, 2);
    insertend(&head, 3);
    insertend(&head, 4);
    insertend(&head, 5);
    printlist(head);
    return 0;
}

Output

1 2 3 4 5