C++年月日时分秒设置路径

/// 

/// 获取保存文件的路径
/// 
/// 
string GetFileSavePathName()
{
	SYSTEMTIME st = { 0 };
	GetLocalTime(&st);  //获取当前时间 可精确到ms
	int year = st.wYear;
	int month = st.wMonth;
	int day = st.wDay;
	int hour = st.wHour;
	int minute = st.wMinute;
	int second = st.wSecond;
	int milliSec = st.wMilliseconds;
	char yearStr[5], monthStr[3], dayStr[3], hourStr[3],
		minuteStr[3], secondStr[3], milliSecStr[6];

	sprintf(yearStr, "%d", year);
	sprintf(monthStr, "%d", month);
	sprintf(dayStr, "%d", day);
	sprintf(hourStr, "%d", hour);
	sprintf(minuteStr, "%d", minute);
	sprintf(secondStr, "%d", second);
	sprintf(milliSecStr, "%d", milliSec);
	if (minuteStr[1] == '')
	{
		minuteStr[2] = '';
		minuteStr[1] = minuteStr[0];
		minuteStr[0] = '0';

	}
	sprintf(secondStr, "%d", second);          // 秒。
	if (secondStr[1] == '')                  // 如果秒为一位，如5，则需要转换字符串为两位，如05。
	{
		secondStr[2] = '';
		secondStr[1] = secondStr[0];
		secondStr[0] = '0';
	}
	char dir[20];
	sprintf(dir, "%s-%s-%s-%s-%s", yearStr, monthStr, dayStr, hourStr, minuteStr);
	string strDir(dir);

	CString strDirName;
	strDirName.Format("%s\FileSave\", g_szPath);
	if (GetFileAttributes(strDirName) == -1)
	{
		CreateDirectory(strDirName, NULL);
	}
	strDirName.Format("%s\FileSave\%s", g_szPath, dir);
	if (GetFileAttributes(strDirName) == -1)
	{
		CreateDirectory(strDirName, NULL);
	}
	

	char file[256];                                // 定义总日期时间char*变量。
	sprintf(file, "%s\%s_%s_%s_%s.dat", strDirName, hourStr, minuteStr, secondStr, milliSecStr);// 将年月日时分秒合并。

	return string(file);
}