open FILE, $logfile || die $!;

##</code><code>##

open FILE, ($logfile || die $!);

##</code><code>##

open (FILE, $logfile) || die "Could not open $logfile: $!\n";

##</code><code>##

open FILE, $logfile or die "Could not open $logfile: $!\n";

##</code><code>##

open (FILE< $logfile) or die "Could not open $logfile: $!\n";