Programming Basics

price.rb

# TODO Guess the price!

# Generate a random number (computer choice)
computer = rand(1..5)

loop do 
  # prompt the user to guess a number
  puts "Guess a number!"
  # from String (gets.chomp) to Integer (.to_i)
  user = gets.chomp.to_i

  # compare computer choice with user guess
  if computer == user
    puts "YOU WIN!"
    break # EXIT the loop
  else
    puts "YOU LOSE!"
  end
end

xmas.rb

require 'date'

# TODO define a method to display number of days until xmas
def days_until_xmas(year=Date.today.year)
  # define xmas (Date class) 
  xmas = Date.new(year,12,25)
  # define today (Date class)
  today = Date.today

  if xmas < today
    xmas = Date.new(year + 1,12,25) 
  end

  # subtract xmas - today
  diff_days = xmas - today
  #return correct data type (Integer)
  return diff_days.to_i
end

# TDD - test driven development
puts days_until_xmas
puts days_until_xmas.class == Integer
# puts days_until_xmas == 311 # 18/02/2020