RE: [Dev-C++] Single Linked List-IV

[Per W. <pw...@ia...>]

If the list is non-empty, then *last is non-NULL. In that case, the OLD
last entry should have it's next pointer pointing at the NEW last entry.

It doesn't matter if the list was empty or not. After an insert - the
insert is always at the end of the list - *last should be set to point to
the NEW last entry. Without this last line, LAST would always be NULL, and
you wouldn't get a linked list.

/Per W

On Sun, 8 Jun 2003, Ioannis Vranos wrote:

> > -----Original Message-----
> > From: Per Westermark [mailto:pw...@ia...]
> > Sent: Saturday, June 07, 2003 10:39 PM
> > To: Ioannis Vranos
> > Cc: 'Dev-Cpp-Users'
> > Subject: RE: [Dev-C++] Single Linked List-IV
> >
> >
> > The slstore() function DOES need it's last line, or else the
> > list will not
> > get a pointer to the last element. The pointer to the last
> > element is used
> > to allow insert of new elements last, without having to
> > iterate throught
> > the list.
>
>
> Perhaps I am missing something but as I understand it the statement
>
>  *last_arg=i;
>
> makes the preceding statement
>
> else
>          (*last_arg)->next=i;
>
>
> redundant.
>
>
>
> >
> > I know it's a bit extra noisy with dual indirection, but
> > since the code
> > is C and not C++, slstore() can't take references to pointers.
>
>
> And? double pointers occupy space themselves too.
>
>
>
>
> Ioannis Vranos
>
> * Programming pages: http://www.noicys.freeurl.com
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> * Alternative URL 2: http://www.noicys.cjb.net
>
>
>
>
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