C/C++中time_t、tm、字符串之间的转换

BOOL GetStrFromTime(time_t iTimeStamp, char *pszTime)
{
tm *pTmp = localtime(&iTimeStamp);
if (pTmp == NULL)
{
return FALSE;
}
sprintf(pszTime, "%d-%d-%d %d:%d:%d", pTmp->tm_year + 1900, pTmp->tm_mon + 1, pTmp->tm_mday, pTmp->tm_hour, pTmp->tm_min, pTmp->tm_sec);
return TRUE;
}

unsigned int GetTimeStampByStr( const char* pDate, int32 iNameSize )
{
const char* pStart = pDate;

char szYear[5], szMonth[3], szDay[3], szHour[3], szMin[3], szSec[3];

szYear[0] = *pDate++;
szYear[1] = *pDate++;
szYear[2] = *pDate++;
szYear[3] = *pDate++;
szYear[4] = 0x0;

++pDate;

szMonth[0] = *pDate++;
szMonth[1] = *pDate++;
szMonth[2] = 0x0;

++pDate;

szDay[0] = *pDate++;
szDay[1] = *pDate++;
szDay[2] = 0x0;

++pDate;

szHour[0] = *pDate++;
szHour[1] = *pDate++;
szHour[2] = 0x0;

++pDate;

szMin[0] = *pDate++;
szMin[1] = *pDate++;
szMin[2] = 0x0;

++pDate;

szSec[0] = *pDate++;
szSec[1] = *pDate++;
szSec[2] = 0x0;

tm tmObj;

tmObj.tm_year = atoi(szYear)-1900;
tmObj.tm_mon = atoi(szMonth)-1;
tmObj.tm_mday = atoi(szDay);
tmObj.tm_hour = atoi(szHour);
tmObj.tm_min = atoi(szMin);
tmObj.tm_sec = atoi(szSec);
tmObj.tm_isdst= -1;

return mktime(&tmObj);
}