C program to make a second copy of a linked list

Question

I was writing a C code to copy the contents of a Linked List onto another list. I want to know if there is a more efficient way of doing this.

Which is better?

Answer 1

Without going recursive, this is about the most compact you can get:

struct node *copy(struct node *org)
{
struct node *new=NULL,**tail = &new;

for( ;org; org = org->link) {
    *tail = malloc (sizeof **tail );
    (*tail)->info = org->info;
    (*tail)->link = NULL;
    tail = &(*tail)->link;
    }
return new;
}