#!/usr/bin/perl
#math and concat operator


$a="8";         #"8" is a string
$b=$a+"1";      #"8" is a string
$c=$a."1";      #"8" and "1" are strings which are concated
$d="50"+"50";   #add two string and get numeric value

print "$a\n";
print "$b\n";
print "$c\n";
print "$d\n";


