#!/usr/bin/perl

use strict;

my	$GlobalA = 1;

foreach my $notAGlobalB (qw /X Y Z/)
{
	&displayDashedLine();
	my $returnValueFromM = &subM($notAGlobalB);
	print "Return:  \$GlobalA = '$GlobalA', \$notAGlobalB = '$notAGlobalB', \$returnValueFromM = '$returnValueFromM'\n";
	my $returnValueFromN = &subN($notAGlobalB);
	print "Return:  \$GlobalA = '$GlobalA', \$notAGlobalB = '$notAGlobalB', \$returnValueFromN = '$returnValueFromN'\n";
}
&displayDashedLine();

exit;


sub displayDashedLine
{
	print "----------------------------------------\n";
}


sub subM
{
	my ($parameterM1, @everythingElse) = @_;
	my $localPrivateVarX;
	if (!defined $localPrivateVarX)
	{
		$localPrivateVarX = 0;
	}
	$localPrivateVarX++;
	print "  SubM:  \$GlobalA = '$GlobalA', \$parameterM1 = '$parameterM1', \$localPrivateVarX = '$localPrivateVarX'\n";

	return;
}


{
	my $localPersistentY;

	sub subN
	{
		my ($parameterN1, @everythingElse) = @_;
		if (!defined $localPersistentY)
		{
			$localPersistentY = 0;
		}
		$localPersistentY++;
		print "  SubN:  \$GlobalA = '$GlobalA', \$parameterN1 = '$parameterN1', \$localPersistentY = '$localPersistentY'\n";

		return;
	}
}

exit;

__END__