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# asctime

From cppreference.com
< c‎ | chrono

Defined in header `<time.h>` |  |
char* asctime( const tm* time_ptr ); |  |

Converts given calendar time tm to a textual representation. The resulting string has the following format:

    Www Mmm dd hh:mm:ss yyyy\n

- `Www` - the day of the week (one of `Mon`, `Tue`, `Wed`, `Thu`, `Fri`, `Sat`, `Sun`).
- `Mmm` - the month (one of `Jan`, `Feb`, `Mar`, `Apr`, `May`, `Jun`, `Jul`, `Aug`, `Sep`, `Oct`, `Nov`, `Dec`).
- `dd` - the day of the month
- `hh` - hours
- `mm` - minutes
- `ss` - seconds
- `yyyy` - years

The function does not support localization.

### [edit] Parameters

time_ptr | - | pointer to a tm object specifying the time to print

### [edit] Return value

pointer to a static null-terminated character string holding the textual representation of date and time, followed by a new line character. The string may be shared between `asctime` and ctime, and may be overwritten on each invocation of any of those functions.

### [edit] Notes

This function returns a pointer to static data and is not thread-safe. POSIX marks this function obsolete and recommends strftime instead.

The behavior is undefined if the output string would be longer than 25 characters, if `timeptr->tm_wday` or `timeptr->tm_mon` are not within the expected ranges, or if `timeptr->tm_year` exceeds INT_MAX-1990.

Some implementations handle timeptr->tm_mday==0 as meaning the last day of the preceding month.

### [edit] Example

Run this code

    #include <stdio.h>
    #include <time.h>

    int main(void)
    {
        time_t rawtime;
        struct tm *timeinfo;

        time(&rawtime);
        timeinfo = localtime(&rawtime);
        printf("%s", asctime(timeinfo));

        return 0;
    }

Possible output:

    Wed Oct  9 10:28:03 2013

### [edit] See also

ctime | converts a `time_t` object to a textual representation (function) [edit]
strftime | converts a `tm` object to custom textual representation (function) [edit]
C++ documentation for asctime

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