(* at your prompt ($), compile this file using the following (don't type "$"):

   $ ocamlbuild printEg.d.byte

   execute the file by next typing

   $ ./printEg.d.byte

   you can clean up your build, so that all that is left is the
   printEg.ml source file using the following, reminiscent of
   Makefiles:

   $ ocamlbuild -clean

*)

let print_name (first:string) (last:string) : unit =
  Printf.printf "%s, %s\n" last first

let print_names () : unit =
  print_name "David" "Walker";
  print_name "Christopher" "Moretti";
  print_name "Margo" "Flynn";
  print_name "Akshay" "Mittal"

let print_header () : unit =
  print_endline "Your course staff are"

let main : unit = 
  print_header (); print_names ()
  
(* Other useful functions:

  print_newline
  print_int
  print_float
  print_char
  print_string

  see also "String conversion functions" in 

  http://caml.inria.fr/pub/docs/manual-ocaml/libref/Pervasives.html

  to convert values to and from strings and print them that way
*)