Linux测试程序交互实现

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void sig_handler(int signo) {     std::cout << "oops! stop!!!" << std::endl;     _exit(0); }   int main(int argc, char **argv) {       PadSim pad_sim ;     pad_sim.init(node);       signal( SIGINT, sig_handler); /*注册ctrl+c 退出函数*/     int value = system("stty erase ^H");/* 退格键不回显 */       char cmd[256];     std::cout <<"***************************************************************" << std::endl;     std::cout <<"The command list:" << std::endl;     std::cout << std::left << std::setw(20) << "h"                         << " This help text\n"                           << std::setw(20) << "auto"                         << " Start: switch control mode to auto \n"                         << std::setw(20) << "manual"                         << " Stop:  switch control mode to manual\n"                           << std::setw(20) << "start"                         << " Start: switch task mode start \n"                         << std::setw(20) << "stop"                         << " Stop:  switch task mode to stop\n"                         << std::setw(20) << "pause"                         << " Pause: switch task mode to pause\n"                         << std::setw(20) << "continue"                         << " Pause: switch task mode to continue\n"                         << std::setw(20) << "shutdown"                         << " Shut down the program\n"                         << std::flush;     std::cout <<"***************************************************************" << std::endl;     std::cout << "> ";     while (std::cin.getline(cmd, sizeof(cmd)))     {         std::string strCmd(cmd);         if (strCmd == "shutdown")         {             break;         }         else if (strCmd == "h")         {             std::cout << std::left << std::setw(20) << "h"                         << " This help text\n"                           << std::setw(20) << "auto"                         << " Start: switch control mode to auto \n"                         << std::setw(20) << "manual"                         << " Stop:  switch control mode to manual\n"                           << std::setw(20) << "start"                         << " Start: switch task mode to start \n"                         << std::setw(20) << "stop"                         << " Stop:  switch task mode to stop\n"                         << std::setw(20) << "pause"                         << " Pause: switch task mode to pause\n"                         << std::setw(20) << "continue"                         << " Pause: switch task mode to continue\n"                         << std::setw(20) << "shutdown"                         << " Shut down the program\n"                         << std::flush;         }         else if (strCmd == "auto")         {             pad_sim.pad_send_message(1008);         }         else if (strCmd == "manual")         {             pad_sim.pad_send_message(1009);         }         else if (strCmd == "start")         {             pad_sim.pad_send_message(1007);         }         else if (strCmd == "stop")         {             pad_sim.pad_send_message(1006);         }         else if (strCmd == "pause")         {             pad_sim.pad_send_message(1004);         }         else if (strCmd == "continue")         {             pad_sim.pad_send_message(1005);         }         else         {             std::cerr << "Error: unknown commamd" << std::endl;         }                   std::cout << "> ";     }     std::cout << "exit " << std::endl;     return 0; }