#!/usr/bin/perl
use strict;

my ($quote,$num,$another); #a nice way to declare a lot of variable at once.

$num = 42;

$quote = "this one is double quoted. life is: $num \n ";

my $var = 'this is single quoted. life is: $num \n'; #a good way to initialize and declare at once.


#These print statements will help you understand the difference between single and double quotes.

print $quote;

print $var;

print $num + 42; #some simple math

print "\n";
 
print $num**2; #notice the exponent operator

print "\n";