bottle recycling

bottlerecycling.rb

def recycle_bottle (full,empty,caps)

  b = ((full + empty) / 2).floor
  c = ((full + caps) / 4).floor

  @fromB += b
  @fromC += c

  empty = (full + empty) % 2
  caps = (full + caps) % 4
  full =  b + c

  unless full == 0 
    recycle_bottle(full,empty,caps)
  else
    @lb = empty
    @lc = caps
  end 
end

def main(num)
  begin
    command = get_input.strip.downcase
    clear
    @purchasedbottle = num / 2
    @fromB = 0
    @fromC = 0
    @lb = 0
    @lc = 0
    recycle_bottle((command.to_i / 2).floor, 0, 0)
    puts "Input dollar #{num}"
    puts "From purchase #{@purchasedbottle}"
    puts "From empty bottle #{@fromB}"
    puts "From caps #{@fromC}"
    puts "Leftover bottle #{@lb}"
    puts "Leftover caps #{@lc}"
    puts ""
    puts ""
    end while command != "exit"
end

def get_input
  puts "Enter the dollor amout you want to spend"
  puts "Enter exit to leave"
  print ">"
  gets
end

#http://stackoverflow.com/questions/116593/how-do-you-clear-the-irb-console
def clear
    system("cls") || system("clear") || puts("\e[H\e[2J")
end

clear
puts main(20)