#!/usr/bin/ruby

$hello = "Hello World\n"

print $hello
print $hello*3

$hello = ['Hello','Hi','Greetings']

print $hello[0] + "\n";
print $hello[1] + "\n";
print $hello[2] + "\n";

print "Say Hi: \n"; 

while input = STDIN.gets
    input.chop!
    if input == $hello[1]
      print "\n" + "Hi.\n";
      break; 
    else
      print "I heared '", input ,"'. Try again.\n"; 
    end
end