参考链接：
CTime/COleDateTime::Format方法的使用
http://stat.ethz.ch/R-manual/R-devel/library/base/html/strptime.html
http://www.geezer.org/sw/mvform/doc/strftime.txt
CTime::Format主要用来格式化日期和时间。
举例:
CTime ctNow=CTime::GetCurrentTime();
CString strTime1 = ctNow.Format(_T("%Y年%m月%d日")); // 2014年05月27日
CString strTime2 = ctNow.Format(_T("%Y-%m-%d %H:%M:%S")); // 2014-05-27 14:24:45
CString strTime3 = ctNow.Format(_T("%Y-%#m-%#d %H:%M:%S")); // 2014-5-27 14:24:45
CString strTime4 = ctNow.Format(_T("%c")); // 05/27/14 14:24:45
格式化的参数详细列举如下：
Formats |
Description |
Memo/Example |
%a |
abbreviated weekday name |
星期的缩写 |
%A |
full weekday name |
完整的星期名 |
%b |
abbreviated month name |
月份的缩写 |
%B |
full month name |
完整的月份名 |
%c |
locale's date and time representation |
当前区域（设置）的日期和时间， 如，05/27/14 13:42:43 |
%d |
the day of the month as a decimal number (01-31) |
日 如，27 |
%H |
the hour (24-hour clock) as a decimal number(00-23) |
24小时制的小时（00-23） |
%I |
the hour (12-hour clock) as a decimal number(01-12) |
12小时制的小时（00-12） |
%j |
the day of the year as a decimal number (001-366). |
一年的第几天 如，147 |
%m |
the month as a decimal number (01-12). |
月份（00-12） 如，05 |
%M |
the minute as a decimal number (00-59). |
分钟（00-59） |
%p |
locale's equivalent of ``AM'' (ante meridiem) or ``PM'' (post meridiem) as appropriate |
PM 或者 AM |
%S |
the second as a decimal number (00-60) |
秒钟（00-59） |
%U |
the week number of the year (the first Sunday as the first day of week 1) as a decimal number (00-53). |
一年的第几周（周日是第一周的第一天） |
%w |
the weekday (Sunday as the first day of the week) as a decimal number (0-6). |
工作日（0-6，周日是一周的第一天） |
%W |
the week number of the year (the first Monday as the first day of week 1) as a decimal number (00-53). |
一年的第几周（周一是第一周的第一天） |
%x |
locale's date representation |
当地区域的日期 如，05/27/2014 |
%X |
locale's time representation |
当地区域的时间 如，13:54:12 |
%y |
the year without century as a decimal number (00-99). |
年（00-99） 如， 14 |
%Y |
the year with century as a decimal number. |
年 如，2014 |
%Z |
the time zone name |
时区名称 如，China Standard Time |
月份的全称和缩写： 星期的全称和缩写：
|
Full Month Name |
Abbreviated Month Name |
|
January |
Jan |
|
February |
Feb |
|
March |
Mar |
|
April |
Apr |
|
May |
May |
|
June |
Jun |
|
July |
Jul |
|
August |
Aug |
|
September |
Sep |
|
October |
Oct |
|
November |
Nov |
|
December |
Dec |
|
Full Weekday Name |
Abbreviated Weekday Name |
|
Sunday |
Sun |
|
Monday |
Mon |
|
Tuesday |
Tue |
|
Wednesday |
Wed |
|
Thursday |
Thu |
|
Friday |
Fri |
|
Saturday |
Sat |