From e9e955b69ac5c2906b43db53362b1b93ce0711f1 Mon Sep 17 00:00:00 2001
From: namhsuya <ayushmaan.banerjee@gmail.com>
Date: Fri, 20 Oct 2017 15:30:44 +0530
Subject: [PATCH] Create call_by_reference.pl (#737)

* Add is_palindrome.pl

Added Perl-script to find if a string is palindromic or not.

* delete is_palindrome.pl

adding subfolder

* add perl folder, create is_palindrome.pl

Perl-script for checking palindrome

* Create call_by_reference.pl

Added perl-script to show calling by reference in perl
---
 call_by_reference/perl/call_by_reference.pl | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 call_by_reference/perl/call_by_reference.pl

diff --git a/call_by_reference/perl/call_by_reference.pl b/call_by_reference/perl/call_by_reference.pl
new file mode 100644
index 000000000..c94f078c4
--- /dev/null
+++ b/call_by_reference/perl/call_by_reference.pl
@@ -0,0 +1,19 @@
+#!/usr/bin/perl -w
+
+my $num1 = 100;
+my $num2 = 5;
+
+sub swap{
+  $temp = $_[0];
+  $_[0] = $_[1];
+  $_[1] = $temp;
+  return;
+}
+
+print "Value of num1 BEFORE swap $num1\n";
+print "Value of num2 BEFORE swap $num2\n\n";
+
+swap($num1, $num2);
+
+print "Value of num1 AFTER swap $num1\n";
+print "Value of num2 AFTER swap $num2";