時間函數

#include <iostream>

#include <ctime>

#include <stdlib.h>

#include<mem.h>

using namespace std;

time_t GetTimeStampByStr( const char* pDate )

{

 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;

  szMonth[0]  = *pDate++;

  szMonth[1]  = *pDate++;

  szMonth[2]  = 0x0;

  szDay[0]    = *pDate++;

  szDay[1]    = *pDate++;

  szDay[2]    = 0x0;

  szHour[0]   = *pDate++;

  szHour[1]   = *pDate++;

  szHour[2]   = 0x0;

  szMin[0]    = *pDate++;

  szMin[1]    = *pDate++;

  szMin[2]    = 0x0;

  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);

}

int main()

{

    time_t mkt = GetTimeStampByStr("20150716231620");

    time_t Utctm = time(NULL);

    cout<<"UTCTime in second:"<<mkt<<endl;

    cout<<"UTCTime in second:"<<Utctm<<endl;

    cout << "Hello World!" << endl;

    return 0;

}