2.17 正しい複数形を出力する
printf "It took %d hour%s\n", $time, $time == 1 ? "" : "s"; printf "%d hour%s %s enough.\n", $time, $time == 1 ? "" : "s", $time == 1 ? "is" : "are";
printf "It took %d hour%s\n", $time, $time == 1 ? "" : "s"; printf "%d hour%s %s enough.\n", $time, $time == 1 ? "" : "s", $time == 1 ? "is" : "are";