From: "Mr. Shawn H. Corey" <shawnhco...@magma.ca>
> On Tue, 2008-12-30 at 07:10 -0600, David Ehresmann wrote:
> > fact();
>
> This calls the sub with an undef arguement. Just delete this line.
No. It calls the sub with no arguments.
fact(undef);
would call it with an undef argument.
> > my $num;
> >
> > print "enter a number: \n";
> > chomp($num = <STDIN>);
> >
> > my $x = fact($num);
> > print "the factorial is: $x\n";
> >
> > sub fact {
> > my $num = 0;
> > $num = shift;
>
> Can be done in one line : my $num = shift @_;
Just to prevent confusion ... within a sub{} the
$num = shift;
and
$num = shift @_;
are equivalent.
Jenda
===== je...@krynicky.cz === http://Jenda.Krynicky.cz =====
When it comes to wine, women and song, wizards are allowed
to get drunk and croon as much as they like.
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