use strict;
use warnings;

while (<DATA>) {
    if (/^S\s+(?:\-?\d+(?:\.\d+)?\s+){2}\(\s?(?:(INOUT|OUTPUT))\s?\)/) {
        print "Matched:$_";
    }
    else {
        print "Did NOT match:$_";
    }
}


__DATA__
  onn (bbcreccsnnl_output) !OUTPUT
S 0.0 0.0 (OUTPUT)
A 0.0 0.0 (OUTPUT)
S 1 4 5 (OUTPUT)
S 35 -27 ( INOUT )
S -26.95 32.73 (OUTPUT )