3-add_dnodeint_end.c

#include "lists.h"

/**
 * add_dnodeint_end - Adds a new node at the end of the list
 * @head: Pointer to pointer to the head of the linked list
 * @n: Data to be attached to the new node
 *
 * Return: The address of the new node, otherwise NULL
 */
dlistint_t *add_dnodeint_end(dlistint_t **head, const int n)
{
	dlistint_t *newNode, *temp;

	temp = *head;
	newNode = malloc(sizeof(dlistint_t));
	if (newNode == NULL)
	{
		return (NULL);
	}

	newNode->n = n;
	newNode->next = NULL;
	newNode->prev = NULL;

	if (*head == NULL)
	{
		*head = newNode;
		return (newNode);
	}

	while (temp->next != NULL)
	{
		temp = temp->next;
	}

	temp->next = newNode;
	newNode->prev = temp;

	return (newNode);
}