From Exercise 34 of Learn Ruby the Hard Way. I am sure this could be done a lot more elegantly, but I'm satisfied with what I got from this, and I know it works too.
# everything pertaining to the quiz is contained in the function below
def quiz
# clear the screen
puts "\e[H\e[2J"
# gem for colorising text, very cool stuff
require 'colorize'
# the array of animals
animals = ['bear', 'ruby', 'peacock', 'kangaroo', 'whale', 'platypus']
# display the list of animals, it's not a memory test
puts "These are the animals in our array: #{animals}"
# preparing the ordinal and cardinal arrays for the quiz
ordinal = ["first", "second", "third", "fourth", "fifth", "sixth"]
cardinal = [0, 1, 2, 3, 4, 5]
# generic question for choosing the ordinal position
chooseOrdinal = """
What is the ordinal position of this animal?
first
second
third
fourth
fifth
sixth
"""
# generic question for choosing the cardinal position
chooseCardinal = """
What is the cardinal position of this animal?
0
1
2
3
4
5
"""
puts """
Type the name of an animal:
- bear
- ruby
- peacock
- kangaroo
- whale
- platypus
"""
print "> "
userSelection = $stdin.gets.chomp.downcase
case userSelection
when "#{animals[0]}"
puts "You chose a #{userSelection}.\n"
puts chooseOrdinal
answerOrdinal = $stdin.gets.chomp.downcase
if answerOrdinal == "#{ordinal[0]}"
puts "Correct!\n".colorize(:green)
puts chooseCardinal
print "> "
answerCardinal = $stdin.gets.chomp
if answerCardinal == "#{cardinal[0]}"
puts "Correct!\n".colorize(:green)
else
puts "Incorrect cardinal number!".colorize(:red)
end
else
puts "Incorrect ordinal number!".colorize(:red)
end
when "#{animals[1]}"
puts "You chose a #{userSelection}."
puts chooseOrdinal
answerOrdinal = $stdin.gets.chomp.downcase
if answerOrdinal == "#{ordinal[1]}"
puts "Correct!\n".colorize(:green)
puts chooseCardinal
print "> "
answerCardinal = $stdin.gets.chomp
if answerCardinal == "#{cardinal[1]}"
puts "Correct!".colorize(:green)
else
puts "Incorrect cardinal number!".colorize(:red)
end
else
puts "Incorrect ordinal number!"
end
when "#{animals[2]}"
puts "You chose a #{userSelection}."
puts chooseOrdinal
answerOrdinal = $stdin.gets.chomp.downcase
if answerOrdinal == "#{ordinal[2]}"
puts "Correct!\n".colorize(:green)
puts chooseCardinal
print "> "
answerCardinal = $stdin.gets.chomp
if answerCardinal == "#{cardinal[2]}"
puts "Correct!".colorize(:green)
else
puts "Incorrect cardinal number!".colorize(:red)
end
else
puts "Incorrect ordinal number!"
end
when "#{animals[3]}"
puts "You chose a #{userSelection}."
puts chooseOrdinal
answerOrdinal = $stdin.gets.chomp.downcase
if answerOrdinal == "#{ordinal[3]}"
puts "Correct!\n".colorize(:green)
puts chooseCardinal
print "> "
answerCardinal = $stdin.gets.chomp
if answerCardinal == "#{cardinal[3]}"
puts "Correct!".colorize(:green)
else
puts "Incorrect cardinal number!".colorize(:red)
end
else
puts "Incorrect ordinal number!"
end
when "#{animals[4]}"
puts "You chose a #{userSelection}."
puts chooseOrdinal
answerOrdinal = $stdin.gets.chomp.downcase
if answerOrdinal == "#{ordinal[4]}"
puts "Correct!\n".colorize(:green)
puts chooseCardinal
print "> "
answerCardinal = $stdin.gets.chomp
if answerCardinal == "#{cardinal[4]}"
puts "Correct!".colorize(:green)
else
puts "Incorrect cardinal number!".colorize(:red)
end
else
puts "Incorrect ordinal number!"
end
when "#{animals[5]}"
puts "You chose a #{userSelection}."
puts chooseOrdinal
answerOrdinal = $stdin.gets.chomp.downcase
if answerOrdinal == "#{ordinal[5]}"
puts "Correct!\n".colorize(:green)
puts chooseCardinal
print "> "
answerCardinal = $stdin.gets.chomp
if answerCardinal == "#{cardinal[5]}"
puts "Correct!".colorize(:green)
else
puts "Incorrect cardinal number!".colorize(:red)
end
else
puts "Incorrect ordinal number!".colorize(:red)
end
else
puts "I know no such animal."
end
end
quiz()
