// // timer.cpp // ~~~~~~~~~ // // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com) // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // #include #include void print(const boost::system::error_code& /*e*/) { std::cout << "Hello, world!" << std::endl; } int main() { boost::asio::io_context io; boost::asio::steady_timer t(io, boost::asio::chrono::seconds(5)); t.async_wait(&print); io.run(); return 0; }