Learn to Program, 2nd Edition

Exercises from Chapter 12

One Billion Seconds!

Well, I don’t know your brithday, so I don’t know how you’d do it, but here’s how I would do it:

#  I don't know what second I was born.
puts(Time.gm(1976, 8, 3, 13, 31) + 10**9)
#  And yes, I had a party.  It was awesome
#  (at least the parts I remember).

2008-04-11 15:17:40 UTC

Happy Birthday!

How you could do it:

puts 'What year were you born?'
b_year = gets.chomp.to_i
puts 'What month were you born?  (1-12)'
b_month = gets.chomp.to_i
puts 'What day of the month were you born?'
b_day = gets.chomp.to_i
b = Time.local(b_year, b_month, b_day)
t = Time.new
age = 1
while Time.local(b_year + age, b_month, b_day) <= t
  puts 'SPANK!'
  age = age + 1
end

What year were you born?
2009
What month were ...