c++ unsigned shor 命令

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#include <stdlib.h> #include <stdio.h> #include <string.h> #include <errno.h> #include <unistd.h> #include <pthread.h> #include <fcntl.h> #include <stdbool.h>   #include <sys/ipc.h> #include <sys/msg.h> #include <sys/time.h> #include <sys/types.h> #include <sys/stat.h> #include <stdio.h> #include <string.h>   #include <fstream> #include <iostream> using namespace std; static const unsigned short DEVCTRL_POWEROFF                = 0x0101;   //电源关闭 static const unsigned short DEVCTRL_SLEEP                   = 0x0105;   //睡眠模式 bool InsertSleCeaseCmd(unsigned short usAfcCtrlCmd)  {     int iAfcCtrlCmd = 0;     switch(usAfcCtrlCmd)     {     case DEVCTRL_POWEROFF:         iAfcCtrlCmd = 1;                break;     case DEVCTRL_SLEEP:         iAfcCtrlCmd = 2;         break;     default:         break;     }     if(iAfcCtrlCmd == 0)     {     return false;   }   return true;  } int main() {    if(InsertSleCeaseCmd(DEVCTRL_POWEROFF))     cout<<"2021,新年快乐"<<endl;    return 0; }