# 2.11BSD#431 - /usr/man/cat3/strftime.0

    STRFTIME(3)	    UNIX Programmer's Manual	      STRFTIME(3)

    NAME
         strftime - format date and time

    SYNOPSIS
         #include <sys/types.h>
         #include <time.h>
         #include <string.h>

         size_t strftime(buf, maxsize, format, timeptr)
         char *buf;
         size_t maxsize;
         char *format;
         struct tm *timeptr;

    DESCRIPTION
         The strftime() function formats the information from timeptr
         into the buffer buf according to the string pointed to by
         format.

         The format string consists of zero or more conversion
         specifications and ordinary characters.  All ordinary char-
         acters are copied directly into the buffer.  A conversion
         specification consists of a percent sign ``%'' and one other
         character.

         No more than maxsize characters will be placed into the
         array.  If the total number of resulting characters, includ-
         ing the terminating null character, is not more than max-
         size, strftime() returns the number of characters in the
         array, not counting the terminating null.	Otherwise, zero
         is returned.

         Each conversion specification is replaced by the characters
         as follows which are then copied into the buffer.

         %A     is replaced by the full weekday name.

         %a     is replaced by the abbreviated weekday name, where
    	    the abbreviation is the first three characters.

         %B     is replaced by the full month name.

         %b or %h
    	    is replaced by the abbreviated month name, where the
    	    abbreviation is the first three characters.

         %C  is equivalent to ``%a %b %e %H:%M:%S %Y'' (the format
    	 produced by asctime(3)).

         %c     is equivalent to ``%m/%d/%y''.

         %D     is replaced by the date in the format ``mm/dd/yy''.

    Printed 11/26/99	  April 1, 1995                         1

    STRFTIME(3)	    UNIX Programmer's Manual	      STRFTIME(3)

         %d     is replaced by the day of the month as a decimal
    	    number (01-31).

         %e     is replaced by the day of month as a decimal number
    	    (1-31); single digits are preceded by a blank.

         %H     is replaced by the hour (24-hour clock) as a decimal
    	    number (00-23).

         %I     is replaced by the hour (12-hour clock) as a decimal
    	    number (01-12).

         %j     is replaced by the day of the year as a decimal
    	    number (001-366).

         %k     is replaced by the hour (24-hour clock) as a decimal
    	    number (0-23); single digits are preceded by a blank.

         %l     is replaced by the hour (12-hour clock) as a decimal
    	    number (1-12); single digits are preceded by a blank.

         %M     is replaced by the minute as a decimal number (00-
    	    59).

         %m     is replaced by the month as a decimal number (01-12).

         %n     is replaced by a newline.

         %p     is replaced by either ``AM'' or ``PM'' as appropri-
    	    ate.

         %R     is equivalent to ``%H:%M''

         %r     is equivalent to ``%I:%M:%S %p'' .

         %t     is replaced by a tab.

         %S     is replaced by the second as a decimal number (00-
    	    60).

         %T or %X
    	    is equivalent to "%H:%M:%S" .

         %U     is replaced by the week number of the year (Sunday as
    	    the first day of the week) as a decimal number (00-
    	    53).

         %W     is replaced by the week number of the year (Monday as
    	    the first day of the week) as a decimal number (00-
    	    53).

         %w     is replaced by the weekday (Sunday as the first day

    Printed 11/26/99	  April 1, 1995                         2

    STRFTIME(3)	    UNIX Programmer's Manual	      STRFTIME(3)

    	    of the week) as a decimal number (0-6).

         %x     is equivalent to ``%m/%d/%y %H:%M:%S'' .

         %Y     is replaced by the year with century as a decimal
    	    number.

         %y     is replaced by the year without century as a decimal
    	    number (00-99).

         %Z     is replaced by the time zone name.

         %%     is replaced by `%' .

    SEE ALSO
         date(1), ctime(3), printf(1), printf(3)

    STANDARDS
         The strftime() function conforms to ANSI X C3.159-
         1989(``ANSI C'').

    BUGS
         There is no conversion specification for the phase of the
         moon.

    Printed 11/26/99	  April 1, 1995                         3

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