%EC%A7%84%EC%B2%9C%EB%A7%88%EC%82%AC%EC%A7%80%E2%94%BB%20%E3%80%90optop10.c%EF%BC%AF%EF%BC%AD%E3%80%91%E2%99%A0%EC%A7%84%EC%B2%9C%EC%8A%88%EC%96%BC%E2%9C%8E%EC%A7%84%EC%B2%9C%EC%95%88%EB%A7%88%EB%B0%A9%E2%96%B2%EC%A7%84%EC%B2%9C%EC%95%88%EB%A7%88%20%EC%A7%84%EC%B2%9COP%20%EC%A7%84%EC%B2%9C%ED%85%8C%EB%9D%BC%ED%94%BC