int x;
printf("%d",x);

##</code><code>##

char name[42];
printf("%s",name);

##</code><code>##

use strict;
use warnings;
use Devel::Peek;

my $str = "";
Dump($str);

$str = "Fred Bloggs";
Dump($str);

$str = "This is a much, much longer string";
Dump($str);

$str = "";
Dump($str);

undef $str;
Dump($str);