void
ZapAcl (struct Acl *acl)
{
if (!acl)
return;
ZapList(acl->pluslist);
ZapList(acl->minuslist);
free(acl);
}
/**************************** BuildList *****************************
DESCRIPTION Builds a singly linked list with a dummy head node. The
characters in the list are in the same order in which the
user enters them, i.e. new characters are added to the tail
end of the list.
Input terminates when the enter key is pressed.
PARAMETERS
IN, List A pointer to a singly linked list with a dummy head node.
It is imperative that List be initialized before calling
this routine.
NOTE Before building the new list, ZapList is called. This
ensures that a memory leak does not develop.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
void BuildList (NodePtr List)
{
ZapList(List); //makes sure List is empty
char NewChar;
cin.get(NewChar);
while (NewChar != '\n')
{
List -> Link = new (nothrow) Node; //create a new Node
if (List -> Link == NULL) //make sure Node was created
return;
List = List -> Link; //List points to the new Node
List -> Ch = NewChar; //fill Ch part of new Node
List -> Link = NULL; //make sure the List ends with NULL
cin.get(NewChar);
}
}
