#include <boost/asio.hpp>

int main() {
  boost::asio::io_context io_context;
  boost::asio::ip::tcp::acceptor acceptor(io_context, boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), 8080));

  while (true) {
    boost::asio::ip::tcp::socket socket(io_context);
    acceptor.accept(socket);
    
    // 处理客户端请求...
  }

  return 0;
}

#include <QApplication>
#include <QPushButton>

int main(int argc, char *argv[]) {
  QApplication app(argc, argv);
  QPushButton button("Hello, World!");
  button.show();

  return app.exec();
}

#include <opencv2//opencv.hpp>

int main() {
  cv::CascadeClassifier face_cascade;
  face_cascade.load("haarcascade_frontalface_default.xml");

  cv::Mat image = cv::imread("image.jpg");
  std::vector<cv::Rect> faces;
  face_cascade.detectMultiScale(image, faces, 1.1, 3, 0, cv::Size(30, 30));

  for (auto& face : faces) {
    cv::rectangle(image, face, cv::Scalar(0, 255, 0), 2);
  }

  cv::imshow("Faces", image);
  cv::waitKey(0);

  return 0;
}

#include <ace/SOCK_Acceptor.h>
#include <ace/SOCK_Stream.h>

int main() {
  ACE_SOCK_Acceptor acceptor(8080);
  while (true) {
    ACE_SOCK_Stream client_socket;
    if (acceptor.accept(client_socket) == -1) {
      ACE_ERROR_RETURN((LM_ERROR, ACE_TEXT("accept() failed")), -1);
    }

    // 处理客户端请求...
  }

  return 0;
}