fizzbuzz.ex

defmodule FizzerBuzzer do
  def go do
    go(1)
  end

  def go(num) when num == 101 do
  end

  def go(num) do
    cond do
      rem(num, 15) == 0 ->
        IO.puts "FizzBuzz"
      rem(num, 3) == 0 ->
        IO.puts "Fizz"
      rem(num, 5) == 0 ->
        IO.puts "Buzz"
      true ->
        IO.puts num
    end
    go(num + 1)
  end
end

FizzerBuzzer.go