格式化输出当前时间

<pre name="code" class="cpp">                time_t tNow = 0;
		struct tm tmTemp = {0};
		char szTime[32];
		tNow = time(NULL);
		gmtime_r(&tNow, &tmTemp);
		(VOID)strftime(szTime, 31, "%Y-%m-%d %H:%M:%S", &tmTemp);