project euler solutions

#!/usr/bin/env ruby
# http://projecteuler.net/index.php?section=problems&id=1
# 2010-01-26

def sums(n)
  s, i, p = 0, 0, 0
  while (p < 1000) do
    p = n*i
    i += 1
    s += p
  end
  s
end

puts sums(3)
puts sums(5)

puts "sum of all multiples of 3 or 5 below 1000: %d" % (sums(3) + sums(5))