獲取/設置 windows 系統時間

#include <windows.h>
#include <winbase.h>
#include <stdio.h>

SYSTEMTIME td;

GetLocalTime(&td);

printf ("%4d年%02d月%02d日 %02d:%02d:%02d",
    td.wYear, td.wMonth, td.wDay,
    td.wHour, td.wMinute, td.wSecond);

td.wMilliseconds = 0;
td.wSecond = m_nSecond;
td.wMinute = m_nMinute;
td.wHour = m_nHour;
td.wDay = m_nDay;
td.wMonth = m_nMonth;
td.wYear = m_nYear;

SetLocalTime(&td);