Copy of a linked list

Check out this C program which creates an exact copy of a linked list.


copy_linked_lists(struct node *q, struct node **s)
{
    if(q!=NULL)
    {
        *s=malloc(sizeof(struct node));
        (*s)->data=q->data;
        (*s)->link=NULL;
        copy_linked_list(q->link, &((*s)->link));
    }
}