C/C++/MFC时间用法

1. C\C++中用法

/* strftime example */
#include <stdio.h>      /* puts */
#include <time.h>       /* time_t, struct tm, time, localtime, strftime */


int main ()
{
time_t rawtime;
struct tm * timeinfo;
char buffer [80];


time (&rawtime);
timeinfo = localtime (&rawtime);


strftime (buffer,80,"Now it's %m/%d/%y, %H:%M:%S.",timeinfo);
puts (buffer);


return 0;
}

CString str; //获取系统时间 　　
CTime tm; tm=CTime::GetCurrentTime(); 　　
str=tm.Format("现在时间是%Y年%m月%d日 %X");
MessageBox(str,NULL,MB_OK);

	CString sDateTime1,sDateTime2;
	sDateTime1 = s1.c_str();
	sDateTime2 = s2.c_str();
	int nYear, nMonth, nDate, nHour, nMin, nSec;
	sscanf(sDateTime1, "%d/%d/%d-%d:%d:%d", &nMonth, &nDate, &nYear, &nHour, &nMin, &nSec);
	nYear +=2000;
	CTime sTime1(nYear, nMonth, nDate, nHour, nMin, nSec); 
	sscanf(sDateTime2, "%d/%d/%d-%d:%d:%d", &nMonth, &nDate, &nYear, &nHour, &nMin, &nSec);
	nYear +=2000;
	CTime sTime2(nYear, nMonth, nDate, nHour, nMin, nSec); 
	CTimeSpan span = sTime2 - sTime1;
	span.GetTotalSeconds();

C/C++/MFC时间用法

原文：http://blog.csdn.net/libinjlu/article/details/42980303