#!/usr/bin/perl

#variables can be long, but must not have
#spaces and can't start with a number
#$userInput = @ARGV[0];
#print "You said $userInput\n";

print qq+
Hello! this is cool
many
many 
many lines
+;

$age = @ARGV[0];
if ($age > 21) {
	print "Hi!\n";
} else {
	print "Go away.\n";
}

#This is a variable. It start with a $
#always start a variable with a $ in perl
$x = 3;
$x + 1;
$y = $x * 2;
$x = $x - 1;

print $x;
print "$x\n";
print "X is equal to $x\n";
print "X is still equal to " . $x . "\n";

print  "Hello \"World\"!\n";