sub printElement(\%$)
{
   my %hash1 = %{($_[0])};
   my $key = $_[1];
   print $key." ".$hash1{$key}."\n";

...

   &printElement(\%hash, $key);
[download]

You are copying the entire hash inside the subroutine so you may as well just do it like this:

sub printElement
{
   my ( $key, %hash1 ) = @_;
   print "$key $hash1{$key}\n";

...

   printElement( $key, %hash );
[download]

Of course, using a reference means that you don't have to copy the hash:

sub printElement
{
   my ( $hash1, $key ) = @_;
   print "$key $hash1->{$key}\n";

...

   printElement( \%hash, $key );
[download]

Also, if you use the prototype (\%$) then the first argument in the call to the subroutine has to be a hash and not a reference to a hash or you will get this error message:

Type of arg 1 to main::printElement must be hash (not reference constructor) at -e line 10

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.