使用CTime类可以很方便地取得当前系统时间并转换为各种格式
Theformatargument consists of one or more codes; as inprintf, the formatting codes are preceded by a percent sign (%). Characters that do not begin with%are copied unchanged tostrDest.TheLC_TIMEcategory of the current locale affects the output formatting ofstrftime.(For more information onLC_TIME, seesetlocale.) The formatting codes forstrftimeare listed below:
%a
Abbreviated weekday name
%A
Full weekday name
%b
Abbreviated month name
%B
Full month name
%c
Date and time representation appropriate for locale
%d
Day of month as decimal number (01 – 31)
%H
Hour in 24-hour format (00 – 23)
%I
Hour in 12-hour format (01 – 12)
%j
Day of year as decimal number (001 – 366)
%m
Month as decimal number (01 – 12)
%M
Minute as decimal number (00 – 59)
%p
Current locale's A.M./P.M. indicator for 12-hour clock
%S
Second as decimal number (00 – 59)
%U
Week of year as decimal number, with Sunday as first day of week (00 – 53)
%w
Weekday as decimal number (0 – 6; Sunday is 0)
%W
Week of year as decimal number, with Monday as first day of week (00 – 53)
%x
Date representation for current locale
%X
Time representation for current locale
%y
Year without century, as decimal number (00 – 99)
%Y
Year with century, as decimal number
%z,%Z
Either the time-zone name or time zone abbreviation, depending on registry settings; no characters if time zone is unknown
%%
Percent sign
As in theprintffunction, the#flag may prefix any formatting code. In that case, the meaning of the format code is changed as follows.
Format code
Meaning
%#a,%#A,%#b,%#B,%#p,%#X,%#z,%#Z,%#%
|
#flag is ignored. |
%#c |
Long date and time representation, appropriate for current locale. For example: "Tuesday, March 14, 1995, 12:41:29". |
%#x |
Long date representation, appropriate to current locale. For example: "Tuesday, March 14, 1995". |
%#d,%#H,%#I,%#j,%#m,%#M,%#S,%#U,%#w,%#W,%#y,%#Y
|
Remove leading zeros (if any). |
Requirements
Routine
Required header
Compatibility
strftime |
<time.h> |
ANSI, Win 98, Win Me, Win NT, Win 2000, Win XP |
wcsftime |
<time.h> or <wchar.h> |
ANSI, Win 98, Win Me, Win NT, Win 2000, Win XP |
Example
// crt_times.c
/* This program demonstrates these time and date functions:
* _time64 _ftime64 _ctime64 asctime
* _localtime64 _gmtime64 _mktime64 _tzset
* _strtime _strdate strftime
*
* Also the global variable:
* _tzname
*/
#include <time.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/timeb.h>
#include <string.h>
int main()
{
char tmpbuf[128], ampm[] = "AM";
__time64_t ltime;
struct __timeb64 tstruct;
struct tm *today, *gmt, xmas = { 0, 0, 12, 25, 11, 93 };
/* Set time zone from TZ environment variable. If TZ is not set,
* the operating system is queried to obtain the default value
* for the variable.
*/
_tzset();
/* Display operating system-style date and time. */
_strtime( tmpbuf );
printf( "OS time:\t\t\t\t%s\n", tmpbuf );
_strdate( tmpbuf );
printf( "OS date:\t\t\t\t%s\n", tmpbuf );
/* Get UNIX-style time and display as number and string. */
_time64( <ime );
printf( "Time in seconds since UTC 1/1/70:\t%ld\n", ltime );
printf( "UNIX time and date:\t\t\t%s", _ctime64( <ime ) );
/* Display UTC. */
gmt = _gmtime64( <ime );
printf( "Coordinated universal time:\t\t%s", asctime( gmt ) );
/* Convert to time structure and adjust for PM if necessary. */
today = _localtime64( <ime );
if( today->tm_hour >= 12 )
{
strcpy( ampm, "PM" );
today->tm_hour -= 12;
}
if( today->tm_hour == 0 ) /* Adjust if midnight hour. */
today->tm_hour = 12;
/* Note how pointer addition is used to skip the first 11
* characters and printf is used to trim off terminating
* characters.
*/
printf( "12-hour time:\t\t\t\t%.8s %s\n",
asctime( today ) + 11, ampm );
/* Print additional time information. */
_ftime64( &tstruct );
printf( "Plus milliseconds:\t\t\t%u\n", tstruct.millitm );
printf( "Zone difference in hours from UTC:\t%u\n",
tstruct.timezone/60 );
printf( "Time zone name:\t\t\t\t%s\n", _tzname[0] );
printf( "Daylight savings:\t\t\t%s\n",
tstruct.dstflag ? "YES" : "NO" );
/* Make time for noon on Christmas, 1993. */
if( _mktime64( &xmas ) != (__time64_t)-1 )
printf( "Christmas\t\t\t\t%s\n", asctime( &xmas ) );
/* Use time structure to build a customized time string. */
today = _localtime64( <ime );
/* Use strftime to build a customized time string. */
strftime( tmpbuf, 128,
"Today is %A, day %d of %B in the year %Y.\n", today );
printf( tmpbuf );
}
Sample Output
OS time: 14:15:49
OS date: 02/07/02
Time in seconds since UTC 1/1/70: 1013120149
UNIX time and date: Thu Feb 07 14:15:49 2002
Coordinated universal time: Thu Feb 07 22:15:49 2002
12-hour time: 02:15:49 PM
Plus milliseconds: 455
Zone difference in hours from UTC: 8
Time zone name: Pacific Standard Time
Daylight savings: NO
Christmas Sat Dec 25 12:00:00 1993
简单点的如下:
CString msg1="aaaaaaaaaaa";
KillTimer(1);
CTime t = CTime::GetCurrentTime();
char szTime[8];
int nHour = t.GetHour();
int nMinute = t.GetMinute();
int nSecond = t.GetSecond();
wsprintf(szTime, "%02i:%02i:%02i", nHour, nMinute,nSecond);//分秒一般习惯用两位表
m_edit1=szTime;
UpdateData (FALSE);
SetTimer(1, 1000,NULL);
msg1=t.Format("%d-%m-%y"); //可以看到format的功能
MessageBox(msg1);
format中参数的含义见上面的说明
分享到:
相关推荐
十分详细的列举了CTime::Format的参数使用说明,比msdn详细点,希望对初学者有帮助
1.使用CTime类(获取系统当前时间,精确到秒) CString str; //获取系统时间 CTime tm; tm=CTime::GetCurrentTime();//获取系统日期 str=tm.Format(现在时间是%Y年%m月%d日 %X); MessageBox(str,NULL,MB_OK); a,...
m_time=CTime::GetCurrentTime();//获取当前时间日期 m_strDate=m_time.Format("%x");//格式化日期 m_strTime=m_time.Format("%X");//格式化时间 m_strDateTime=m_time.Format("%Y-%m-%d %H:%M:%S 第%W周...
VC 6.0 获取并显示沪深股市实时交易行情,以Http Post方式请求URL,采集相关URL内容,... CString m_strTime = time.Format(" 刷新 %Y-%m-%d %H:%M:%S"); m_Text[31].SetWindowText(strArray.GetAt(31) m_strTime);
CTime time = CTime::GetCurrentTime(); //得到系统时间 m_strTime = time.Format("%Y-%m-%d %H:%M:%S"); SetTimer(1,1000,NULL); //设置1s的定时器 UpdateData(FALSE); GetDlgItem(IDC_EDIT_WINTIME)->...
省宽度,使用此值将为时间的显示预留空间)。注 2)在MainFrm.cpp中indicators声明处添加ID_INDICATOR_CLOCK,代 码如下: 这一步中ID_INDICATOR_CLOCK的插入位置将影响时间窗格在状态栏中 的显示位置。 3)安装...
m_strTime=m_time1.Format("%Y年%m月%d日 %H时%M分%S秒"); CTime m_time2(2010,1,1,0,0,0);//2010年元旦 CTimeSpan m_timespan=m_time2-m_time1;//获取时间间隔 m_Days=m_timespan.GetDays();//天数 m...
CTime tt=CTime::GetCurrentTime(); CString strTT; strTT.Format("%d:%d:%d",tt.GetHour(),tt.GetMinute(),tt.GetSecond()); obj->m_list.InsertItem(0,obj->m_szi); obj->m_list....
格式参数使用相同的指令使用strftime();它默认为“%a %b %d %H:%M:%S %Y”相匹配的ctime()所返回的格式。 如果字符串不能按格式进行解析,或者如果它具有解析后多余的数据,ValueError被挂起。 语法 以下是strptime...
1.程序分析: ... printf(ctime(<)) /*english format output*/ printf(asctime(localtime(<))) /*tranfer to tm*/ printf(asctime(gmtime(<))) /*tranfer to Greenwich time*/ getch() }
【程序91】 题目:时间函数举例1 ... /*english format output*/ printf(asctime(localtime(<)));/*tranfer to tm*/ printf(asctime(gmtime(<))); /*tranfer to Greenwich time*/ getch(); }
工程使用的是基于对话框的程序,每个对话框为一个类,父类为CDialog,实现的一些功能都封装在类的函数中,体现了面向对象编程语言C++的特性。 导入ADO接口:在工程的stdafx.h文件里直接引入符号#import引入ADO库文件...
>>> time.ctime() 'Tue Oct 8 18:34:27 2019' >>> time.gmtime() time.struct_time(tm_year=2019, tm_mon=10, tm_mday=8, tm_hour=10, tm_min=34, tm_sec=52, tm_wday=1, tm_yday=281, tm_isdst=0) 二、时间格式化 ...
void ThreadFunc() { CTime time; CString strTime; m_bRun=TRUE;... strTime=time.Format("%H:%M:%S"); ::SetDlgItemText(AfxGetMainWnd()->m_hWnd,IDC_TIME,strTime); Sleep(1000); } }
This software is a helper to learn format conversion between CTime formatted date-time and time_t long integer. time_t use number of seconds elapsed since midnight (00:00:00), January 1, 1970.
/*english format output*/ printf(asctime(localtime(<)));/*tranfer to tm*/ printf(asctime(gmtime(<))); /*tranfer to Greenwich time*/ } 【程序92】 题目:时间函数举例2 1.程序分析: 2.程序源...
//CTime; SYSTEMTIME sysTime; GetLocalTime(&sysTime); CString strTime; strTime.Format(_T("%04d-%02d-%02d %02d:%02d:%02d"), sysTime.wYear, sysTime.wMonth, sysTime.wDay, sysTime.wHour, sysTime...
F Format ->以用户指定格式输出,Format参数为预定义或自定义设备对象类中的列名,如:name status等 H ->显示列输出前面的头部分,即输出中包括列头部分 P ->列出预定义设备对象类中设备的有关信息,即支持的设备,...
CTime c_time=CTime::GetCurrentTime(); CString nowtime=c_time.Format("%Y年%m月%d日 %H:%M:%S"); m_nowtime.SetWindowText(nowtime); this->Invalidate(TRUE); }break; case 2: { TCHAR buf[255]={'\0'};...
最近有人问我如何实现倒计时的按钮功能,例如发送验证码,我记得有个CountDownTimer,因为好久没用过了,自己就写了一个,代码如下 ... btn2.setText(String.format(%ds后重新发送验证码,millisUntilFinished/1000));