Continuing on ... seemingly missed ex3 and ex4

.gitignore

@@ -0,0 +1 @@
+*~

ex2.rb

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+# A comment, this is so you can read your program later.
+# Anything after the # is ignored by Ruby.
+
+puts "I could have code like this." # and the comment after is ignored.
+
+# You can also use a comment to "disable" or comment out a piece of code:
+# puts "This won't run."
+
+puts "This will run."

ex5.rb

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+my_name = 'Zed A. Shaw'
+my_age = 35
+my_height = 74
+my_weight = 180
+my_eyes = 'Blue'
+my_teeth = 'White'
+my_hair = 'Brown'
+
+puts "Let's talk about %s." % my_name
+puts "He's %d inches tall." % my_height
+puts "He's %d pounds heavy." % my_weight
+puts "Actually that's not too heavy."
+puts "He's got %s eyes and %s hair." % [my_eyes, my_hair]
+puts "His teeth are usually %s depending on the coffee." % my_teeth
+
+# this line is tricky, try to get it exactly right
+puts "If I add %d, %d, and %d I get %d." % [
+    my_age, my_height, my_weight, my_age + my_height + my_weight]