To delete a linked list using temporary variables

Do not use temporary variables to delete linked list, use temporary variable to delete linked list

typedef struct NODE *ptrtonode;typedef ptrtonode list;typedef ptrtonode position;typedef int elementtype;struct Node{
  elementtype Element;   Position Next; };//do not use temporary variables to delete the linked list void deletelist (list L) {    Position P;    P = l->next;    L->next = NULL;    while (P! = NULL)    {free        (p);        P = p->next;    }  } Use temporary variables to delete the linked list void deletelist (list L) {   Position P, Tmp;   P = l->next;   L->next = NULL;   while (P! = NULL)  {       Tmp = p->next;       Free (P);       P = Tmp;  }  }

The difference between the two is not quite clear for the time being.

To delete a linked list using temporary variables