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Get the current time. More secure versions of these functions are available; see _ftime_s
, _ftime32_s
, _ftime64_s
.
Syntax
void _ftime( struct _timeb *timeptr );
void _ftime32( struct __timeb32 *timeptr );
void _ftime64( struct __timeb64 *timeptr );
Parameters
timeptr
Pointer to a _timeb
, __timeb32
, or __timeb64
structure.
Remarks
The _ftime
function gets the current local time and stores it in the structure pointed to by timeptr
. The _timeb
, __timeb32
, and __timeb64
structures are defined in <sys\timeb.h>. They contain four fields, which are listed in the following table.
Field | Description |
---|---|
dstflag |
Nonzero if daylight savings time is currently in effect for the local time zone. (See _tzset for an explanation of how daylight savings time is determined.) |
millitm |
Fraction of a second in milliseconds. |
time |
Time in seconds since midnight (00:00:00), January 1, 1970, coordinated universal time (UTC). |
timezone |
Difference in minutes, moving westward, between UTC and local time. The value of timezone is set from the value of the global variable _timezone (see _tzset ). |
The _ftime64
function, which uses the __timeb64
structure, allows file-creation dates to be expressed up through 23:59:59, December 31, 3000, UTC; whereas _ftime32
only represents dates through 23:59:59 January 18, 2038, UTC. Midnight, January 1, 1970, is the lower bound of the date range for all these functions.
The _ftime
function is equivalent to _ftime64
, and _timeb
contains a 64-bit time unless _USE_32BIT_TIME_T
is defined, in which case the old behavior is in effect; _ftime
uses a 32-bit time and _timeb
contains a 32-bit time.
_ftime
validates its parameters. If passed a null pointer as timeptr
, the function invokes the invalid parameter handler, as described in Parameter validation. If execution is allowed to continue, the function sets errno
to EINVAL
.
By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.
Requirements
Function | Required header |
---|---|
_ftime |
<sys/types.h> and <sys/timeb.h> |
_ftime32 |
<sys/types.h> and <sys/timeb.h> |
_ftime64 |
<sys/types.h> and <sys/timeb.h> |
For more compatibility information, see Compatibility.
Example
// crt_ftime.c
// compile with: /W3
// This program uses _ftime to obtain the current
// time and then stores this time in timebuffer.
#include <stdio.h>
#include <sys/timeb.h>
#include <time.h>
int main( void )
{
struct _timeb timebuffer;
char timeline[26];
errno_t err;
time_t time1;
unsigned short millitm1;
short timezone1;
short dstflag1;
_ftime( &timebuffer ); // C4996
// Note: _ftime is deprecated; consider using _ftime_s instead
time1 = timebuffer.time;
millitm1 = timebuffer.millitm;
timezone1 = timebuffer.timezone;
dstflag1 = timebuffer.dstflag;
printf( "Seconds since midnight, January 1, 1970 (UTC): %I64d\n",
time1);
printf( "Milliseconds: %d\n", millitm1);
printf( "Minutes between UTC and local time: %d\n", timezone1);
printf( "Daylight savings time flag (1 means Daylight time is in "
"effect): %d\n", dstflag1);
err = ctime_s( timeline, 26, & ( timebuffer.time ) );
if (err)
{
printf("Invalid argument to ctime_s. ");
}
printf( "The time is %.19s.%hu %s", timeline, timebuffer.millitm,
&timeline[20] );
}
Seconds since midnight, January 1, 1970 (UTC): 1051553334
Milliseconds: 230
Minutes between UTC and local time: 480
Daylight savings time flag (1 means Daylight time is in effect): 1
The time is Mon Apr 28 11:08:54.230 2003
See also
Time management
asctime
, _wasctime
ctime
, _ctime32
, _ctime64
, _wctime
, _wctime32
, _wctime64
gmtime
, _gmtime32
, _gmtime64
localtime
, _localtime32
, _localtime64
time
, _time32
, _time64