let c = ref 0

let ic = open_in "ebi"
let oc = open_out "ebo"


let parse_gui_message () =
  let s = input_line ic in
  match s with
  | "bouton" -> incr c; string_of_int !c
  | s -> "syntax error: " ^ s

let treat() =
  let answer = parse_gui_message() in
  output_string oc answer;
  output_char oc '\n';
  flush oc

let _ = while true do treat() done