((c++-mode
  . ((c-file-style . "maria-spider")
     (comment-start . "/* ")
     (comment-end . " */")
     (comment-continue . "  ")
     (comment-style . extra-line)))
 (c-mode
  . ((c-file-style . "maria-spider")
     (comment-start . "/* ")
     (comment-end . " */")
     (comment-continue . "  ")
     (comment-style . extra-line))))