Printing size of array unitializes array?

[Joseph L. Casale]

I had the following code:

open (FILEOUT, "> $OutDir/info") or die $!;
print FILEOUT "text         =              abc\n";
my $Tmp = ++$#files;
print FILEOUT "moretext              =              $Tmp\n";

When I add the 3rd line, it initializes the files array and I can't use it 
after? Why is that?
I now have:

open (FILEOUT, "> $OutDir/info") or die $!;
print FILEOUT "text         =              abc\n";
print FILEOUT "moretext              =              " . @files . "\n";

And not only does that work, it also shows the real size of the array? I'm 
confused :)?

Thanks!
jlc