RE: while()

["Quang Nguyen (Ngo)" <quang@xxxxxxxxxxxx>]

I'm not sure which compiler you're using, but assignment expressions do
return a value.  So, the following is okay:

while ((handle = getnextresult()) != NULL)
  {
  ...
  }

--
Quang Nguye^~n (Ngo^)


> -----Original Message-----
> From: John E. Davis [mailto:davis@xxxxxxxxxxxxx]
> Sent: Wednesday, April 25, 2001 7:27 PM
> To: rvanzon@xxxxxxxxxxxx; slang-workers@xxxxxxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: while()
>
>
> Richard van Zon <rvanzon@xxxxxxxxxxxx> wrote:
> >Hi,
> >
> >Am I right that this little piece of code doesn't work ?
> >I get an stack underflow with it :
> >
> >while((handle=getnextresult())!=NULL)
> >{
> >  ...
> >}
>
> Assigment expressions do not return a value.  Hence, you are comparing
> NOTHING to NULL.  You can use the comma operator:
>
>    while (handle = getnextresult (), handle != NULL)
>      {
>         .
> 	.
>      }
>
> --John