%EB%8B%B9%EC%A7%84%EC%85%94%EC%B8%A0%EB%A3%B8%E3%83%B5%20%E3%80%90optop10.c%CE%B8%EF%BC%AD%E3%80%91%20%EB%8B%B9%EC%A7%84%EC%8A%88%EC%96%BC%E2%9D%82%EB%8B%B9%EC%A7%84%EC%95%84%EB%A1%9C%EB%A7%88%20%EB%8B%B9%EC%A7%84%EB%A3%B8%EC%8B%B8%EB%A1%B1%E2%9C%8D%EB%8B%B9%EC%A7%84%ED%85%8C%EB%9D%BC%ED%94%BC%E2%9C%BE%EB%8B%B9%EC%A7%84%EC%95%88%EB%A7%88