Use of the CTime class format

The format argument consists of one or more codes; As in printf, the formatting codes is preceded by a percent sign (%). Characters that does not begin with% is copied unchanged to strdest. The Lc_time category of the current locale affects the output formatting of strftime. (For more information onlc_time, see setlocale.) The formatting codes for strftime is 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 the 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 the printf function, the # flag may prefix any formatting code. In this 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	A Long date and time representation, appropriate for the current locale. For example: "Tuesday, March 14, 1995, 12:41:29".
% #x	Long date representation, appropriate to the 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 $, win XP
Wcsftime	<time.h> or <wchar.h>	ANSI, Win 98, win Me, Win NT, Win $, 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 (&ltime);
printf ("Time in seconds since UTC 1/1/70:/t%ld/n", ltime);
printf ("UNIX Time and date:/t/t/t%s", _ctime64 (&ltime));

/* Display UTC. */
GMT = _gmtime64 (&ltime);
printf ("Coordinated Universal time:/t/t%s", Asctime (GMT));

/* Convert to TIME structure and adjust for PM if necessary. */
Today = _localtime64 (&ltime);
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 are used to skip the first 11
* characters and printf are used to trim off terminating
* characters.
*/
printf ("12-hour time:/t/t/t/t%.8s%s/n",
Asctime (today) + one, 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 (&ltime);

/* 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 25 12:00:00 1993

The simple points are as follows:

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);///minutes and minutes generally used two-bit tables

M_edit1=sztime;

UpdateData (FALSE);

SetTimer (1, 1000,null);

Msg1=t.format ("%d-%m-%y"); You can see the function of format

MessageBox (MSG1);

The meaning of the parameters in format is shown in the description above

Source Document