Reference
C Library
IOstream Library
Strings library
STL Containers
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C Library
cassert (assert.h)
cctype (ctype.h)
cerrno (errno.h)
cfloat (float.h)
ciso646 (iso646.h)
climits (limits.h)
clocale (locale.h)
cmath (math.h)
csetjmp (setjmp.h)
csignal (signal.h)
cstdarg (stdarg.h)
cstddef (stddef.h)
cstdio (stdio.h)
cstdlib (stdlib.h)
cstring (string.h)
ctime (time.h)

ctime (time.h)
functions:
asctime
clock
ctime
difftime
gmtime
localtime
mktime
strftime
time
macros:
CLOCKS_PER_SEC
NULL
types:
clock_t
size_t
time_t
struct tm

asctime

function

<ctime>

char * asctime ( const struct tm * timeptr );

Convert tm structure to string

Interprets the contents of the tm structure pointed by timeptr as a calendar time and converts it to a C string containing a human-readable version of the corresponding date and time.

The returned string has the following format:

Www Mmm dd hh:mm:ss yyyy
Where Www is the weekday, Mmm the month in letters, dd the day of the month, hh:mm:ss the time, and yyyy the year.

The string is followed by a new-line character ('\n') and the terminating null-character.

Parameters

timeptr: Pointer to a tm structure that contains a calendar time broken down into its components (see tm).

Return Value

A C string containing the date and time information in a human-readable format.

The array which holds this string is statically allocated and shared by both the ctime and asctime functions. Each time either one of these functions is called the content of this array is overwritten.

Example

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

/* asctime example */
#include <stdio.h>
#include <time.h>
int main ()
{
  time_t rawtime;
  struct tm * timeinfo;
  time ( &rawtime );
  timeinfo = localtime ( &rawtime );
  printf ( "The current date/time is: %s", asctime (timeinfo) );
  
  return 0;
}

Output:


The current date/time is: Sat May 20 15:21:51 2000

asctime

Parameters

Return Value

Example

See also