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assignment.ml
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assignment.ml
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open Str
(* Function to extract integers from a line *)
let extract_integers line =
let re = regexp "[0-9]+" in
let rec aux acc pos =
try
let _ = search_forward re line pos in
let num = matched_string line in
aux (int_of_string num :: acc) (match_end ())
with Not_found -> List.rev acc
in
aux [] 0
(* Function to process each line *)
let process_line line =
let integers = extract_integers line in
let sum = List.fold_left (+) 0 integers in
(integers, sum)
(* Main function to process input *)
let process_input () =
let rec aux total_sum =
try
let line = input_line stdin in
let integers, sum = process_line line in
(* Print integers and their sum *)
List.iter (fun n -> Printf.printf "%d + " n) integers;
if integers <> [] then Printf.printf "\b\b= %d\n" sum;
aux (total_sum + sum)
with End_of_file ->
Printf.printf "Total Sum = %d\n" total_sum
in
aux 0
let () =
print_endline "Enter lines of text (Ctrl+D to finish):";
process_input ()