【C++】测试程序使用Ctrl+C完整退出

#include <iostream>
#include <atomic>
#include <signal.h>
#include <unistd.h>

std::atomic<bool> test_running (false);

void sigHandler(int num) {
  test_running = false;
  std::cout << "sigHandler done\n";
}

int main(int argc, char *argv[]) {
  test_running = true;
  signal(SIGINT, sigHandler);

  while(test_running) {
    std::cout << "running\n";
    sleep(1);
  }

  std::cout << "test exit\n";
}