#!/usr/bin/ruby
#
# My first ruby program
#
print "Hello World\n"

#!/usr/bin/ruby
#
# My first ruby program
#

# Declare our salutation

$salut = "Good Bye World\n"

# Prepare statements

 print "Hello World\n"
 print $salut

#!/usr/bin/ruby
#
# My first ruby program
#

$salut = "Good Bye World\n"

 print "Hello World\n"
 print $salut

#
# Declare a new value for $salut.
#

$salut = "Oh, I am sorry. I didn't mean to warn
you...\n"

 print "What do you mean Good Bye World?\n"
 print $salut

Hello World
Good Bye World
What do you mean Good Bye World?
Oh, I am sorry. I didn't mean to warn you...

print "Hello World\n"

print 'Hello World\n'

Hello World\n

$salut = $salut * 3

Oh, I am sorry. I didn't mean to warn you...
Oh, I am sorry. I didn't mean to warn you...
Oh, I am sorry. I didn't mean to warn you...

$salut = $salut + " 10, 9, 8..."

 print $salut

Oh, I am sorry. I didn't mean to warn you...
Oh, I am sorry. I didn't mean to warn you...
Oh, I am sorry. I didn't mean to warn you...
 10, 9, 8...

$salut = ['Hello World','Good Bye World','What do you
mean Good Bye World?']

 print $salut

Hello WorldGood Bye WorldWhat do you mean Good Bye
World?

$salut = ['Hello World','Good Bye World','What do you
mean Good Bye World?']

 print $salut[0] + "\n"
 print $salut[1] + "\n"
 print $salut[2] + "\n"

Hello World
Good Bye World
What do you mean Good Bye World?

$salut = ['Hello World','Good Bye World','What do you
mean Good Bye World?']

print $salut[1]

$salut = ['Hello World','Good Bye World','What do you
mean Good Bye World?']

 print "When you enter the world, what do you say? "
 while enterWorld = STDIN.gets
   enterWorld.chop!
   if enterWorld == $salut[0]
     print "\n" + "Yes. Hello World would be
polite.\n"
     break
   else
     print "You say '", enterWorld, "'?!\n" + "You
humans are so rude!\n"
   end
  end

#!/usr/bin/ruby
#
# My first interactive ruby script
#

# Define our main variable with an array

$salut = ['Hello World','Good Bye World','What do you
mean Good Bye World?']

# Print my first question

 print "When you enter the world, what do you say? "

# Create a while loop with the object enterWorld and
await data from
# standard input. The while loop will make sure that
ruby continues
# to process the application until the program tells
it to stop.

 while enterWorld = STDIN.gets

# Make sure we use the chop method on the enterWorld
object. The use
# of the chop method will insure that we strip new
lines and carriage
# returns from our input.

# You will notice that using the chop method has an
extra
# character. The ! allows the existing object to be
modified
# by the method. If you did not use the !, you would
have to redeclare
# the enterWorld object for the if condition to
correctly occur.

   enterWorld.chop!

# Begin the condition sequence. Basically, if
enterworld equals
# Hello World, which is 0, within the array, print
# a new line. Then print, "Yes, Hello World would be
polite." to the screen.

   if enterWorld == $salut[0]
     print "\n" + "Yes. Hello World would be
polite.\n"

# The break statement tells ruby to stop executing if
the previous
# condition is met. If we did not include this in our
while loop,
# the program would run continuously.

    break

# The else statement is used as the secondary
condition. In other
# words, if the first condition is not met, please do
the following.

   else
     print "You say '", enterWorld, "'?!\n" + "You
humans are so rude!\n"
   break

# The end statement is used to close a condition or
loop. In our case,
# it is being used to close both. We are first closing
our if
# condition statements and then stopping our while
loop.

   end
  end

while enterWorld = STDIN.gets
   enterWorld.chop!

if enterWorld == $salut[0]