STRPTIME
Section: Linux Programmer's Manual (3)
Updated: 26 September 1994
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NAME
strptime - convert a string representation of time to a time tm structure
SYNOPSIS
#include <time.h>
char *strptime(char *buf, const char *format,
const struct tm *tm);
DESCRIPTION
strptime()
is the complementary function to
strftime()
and converts the character string pointed to by
buf
to a time value, which is stored in the
tm
structure pointed to by
tm,
using the format specified by
format.
format
is a character string that consists of field descriptors and text characters,
reminiscent of
scanf(3).
Each field descriptor consists of a
%
character followd by another character that specifies the replacement for the
field descriptor.
All other characters are copied from
format
into the result.
The following field descriptors are supported:
-
- %%
-
same as
%
- %a
-
- %A
-
day of week, using locale's weekday names; either the abbreviated or full name
may be specified
- %b
-
- %B
-
- %h
-
month, using locale's month names; either the abbreviated or full name
may be specified
- %c
-
date and time as %x %X
- %C
-
date and time, in locale's long-format date and time representation
- %d
-
- %e
-
day of month (1-31; leading zeroes are permitted but not required)
- %D
-
date as %m/%d/%y
- %H
-
- %k
-
hour (0-23; leading zeroes are permitted but not required)
- %I
-
- %l
-
hour (0-12; leading zeroes are permitted but not required)
- %j
-
day number of year (001-366)
- %m
-
month number (1-12; leading zeroes are permitted but not required)
- %M
-
minute (0-59; leading zeroes are permitted but not required)
- %p
-
locale's equivalent of
AM
or
PM
- %r
-
time as %I:%M:%S %p
- %R
-
time as %H:%M
- %S
-
seconds (0-61; leading zeroes are permitted but not required. Extra second
allowed for leap years)
- %T
-
time as %H:%M:%S
- %w
-
weekday number (0-6) with Sunday as the first day of the week
- %x
-
date, using locale's date format
- %X
-
time, using locale's time format
- %y
-
year within century (0-99; leading zeroes are permitted but not required.
Unfortunately this makes the assumption that we are stuck in the 20th
century as 1900 is automatically added onto this number for the tm_year
field)
- %Y
-
year, including century (for example, 1988)
Case is ignored when matching items such as month or weekday names.
The broken-down time structure tm is defined in <time.h>
as follows:
-
struct tm
{
int tm_sec; /* seconds */
int tm_min; /* minutes */
int tm_hour; /* hours */
int tm_mday; /* day of the month */
int tm_mon; /* month */
int tm_year; /* year */
int tm_wday; /* day of the week */
int tm_yday; /* day in the year */
int tm_isdst; /* daylight saving time */
};
RETURN VALUE
The strptime() function returns a pointer to the character following
the last character in the string pointed to by
buf
.
SEE ALSO
strftime(3), time(2), setlocale(3), scanf(3)
BUGS
The return values point to static data,
whose contents are overwritten by each call.
NOTES
This function is only available in libraries newer than version 4.6.5
The function supports only those locales specified in
locale(7)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- SEE ALSO
-
- BUGS
-
- NOTES
-
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