25 lines
655 B
Plaintext
25 lines
655 B
Plaintext
let input_line_opt ic =
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try Some (input_line ic)
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with End_of_file -> None
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let cmp s1 s2 =
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try ignore(s1.[String.length s2]); 1 (* s1 is longer *)
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with _ ->
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try ignore(s2.[String.length s1]); -1 (* s2 is longer *)
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with _ -> 0 (* both same length *)
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let () =
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let ic = open_in Sys.argv.(1) in
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let rec loop longest acc =
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match input_line_opt ic with
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| Some line ->
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( match cmp line longest with
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| 1 -> loop line (line ^ "\n")
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| 0 -> loop line (acc ^ line ^ "\n")
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| _ -> loop longest acc )
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| None ->
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close_in ic;
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print_string acc
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in
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loop "" ""
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