Short quiz to test how well you know operator precedence rules in ruby. See the [blog post](https://www.vector-logic.com/blog/posts/test-yourself-on-operator-precdence-in-ruby) to have a go at the quiz

operator_precedence_quiz.rb

# To test yourself on the actual quiz go to 
# https://www.vector-logic.com/blog/posts/test-yourself-on-operator-precdence-in-ruby

a = false
b = true
c = 3
d = 4

expressions = [
  "1 + 2 * 2", #  Outputs 5
  "4 * 6 / 2 * 2", # Outputs 24
  "4 / 2 * 2 + 2 / 2", # Outputs 5
  "4 * 2 ** 2 * 2", # Outputs 32
  "5 + 10 % 3 + 6 / 2", # Outpus 9
  "! a || b = false ; b", # Output true
  "c or d == 7", # Outputs 3
  "x = 5 && 4; x", # Outputs 4
  "x = 5 and 4; x", # Outputs 5
  "13 & 10 << 1", # Outputs 4
  "a && b ? 'foo' : 'bar'", # Outputs 'bar'
  "a and b ? 'foo' : 'bar'" # Outputs false
]

expressions.each_with_index do |expr, i|
  puts "Question #{i}: #{expr}"
  puts eval(expr)
  puts "\n"
end