C++ 获得系统时间

#include <windows.h>

SYSTEMTIME sys;
GetLocalTime(&sys);
CString systemtime;
systemtime.Format(L"%4d/%02d/%02d-%02d:%02d:%02d", sys.wYear, sys.wMonth, sys.wDay, sys.wHour, sys.wMinute, sys.wSecond);//稍作修改可获得星期和毫秒的信息
MessageBox(systemtime);