open Printf
let file = "test.dat"
let message = "Hello!"
let _ =
let fichierEcriture = open_out file in
fprintf fichierEcriture "%s\n" message;
close_out fichierEcriture;
let fichierLecture = open_in file in
try
let ligne = input_line fichierLecture in
print_endline ligne;
flush stdout;
close_in fichierLecture
with e ->
close_in_noerr fichierLecture;
raise e