day5.rb

# problem 1
puts "hello there please enter 5 names seperated by spaces"
loop do
  names = gets.chomp.upcase.split
  if names.length >= 5
    puts names[0..4]
    break
  else
    puts "Please enter at least 5 names"
  end
end

# problem 2
truthinesses = []
3.times do
  puts "please enter true or false"
  truthiness = gets.chomp
  truthiness = truthiness == "true" ? true : false
  truthinesses.push(truthiness)
end

all_true = true
truthinesses.each do |truthiness|
  if truthiness == false
    all_true = false
  end
end

if all_true
  puts "YES"
else
  puts "NO"
end


# problem 3
fire = [
  "firetruck",
  "fire drill",
  "fire hydrant",
  "firefighter",
  "fireproof",
  "fire station",
  "fire hose"
]
fire.each do |string|
  print "#{string[4..-1].lstrip}, "
end
puts ""

# problem 4
puts "how much money did you spend on four people?"
money_spent = []
4.times do
  amount = gets.chomp.to_f
  money_spent.push(amount)
end
total = 0.0
money_spent.each do |amount|
  total += amount
end
puts "$%.2f" % total

# problem 5
numbers = []

5.times do
  random_number = rand(1..10)
  numbers.push(random_number)
  puts random_number**2
end

# problem 6
numbers = []

5000.times do
  random_number = rand(0.0...1.0)
  numbers.push(random_number)
end

total = 0.0
numbers.each do |number|
  total += number
end
mean = total / numbers.length
puts mean

Hi Chantal,

Thanks for submitting (and sorry for the delayed feedback)! Excellent work on these exercises, here is my feedback.

• For exercise 1, we want to print all the names of the friends on one line as if they appeared in a sentence.
  For example on an input of

  What are the names of your friends?
  Me
  Myself
  I

  You would print something like

  Your friends are: Me, Myself, and I
  

  How would you change your approach such that you could loop over your friend names and
  print them out like this? (hint, the solution would involve a fencepost approach)
• Good work on line 18, pushing the actual values of true and false into the array, instead of just the string versions of them.

Hope you're enjoying Ada!

Best,
Brooks