C library functions - asctime ()

C standard library - <time.h>

description

C library functionschar * asctime (const struct tm * timeptr) returns a pointer to a string that represents the date and time of the structure struct timeptr.

statement

The following is a statement asctime () function.

char *asctime(const struct tm *timeptr)

parameter

timeptr tm structure is a pointer to a pointer, broken down into the following calendar contains the time of each section:

struct tm {
   int tm_sec;         /* 秒，范围从 0 到 59				*/
   int tm_min;         /* 分，范围从 0 到 59				*/
   int tm_hour;        /* 小时，范围从 0 到 23				*/
   int tm_mday;        /* 一月中的第几天，范围从 1 到 31	                */
   int tm_mon;         /* 月份，范围从 0 到 11				*/
   int tm_year;        /* 自 1900 起的年数				*/
   int tm_wday;        /* 一周中的第几天，范围从 0 到 6		        */
   int tm_yday;        /* 一年中的第几天，范围从 0 到 365	                */
   int tm_isdst;       /* 夏令时						*/	
};

return value

This function returns a C string that contains the date and time information in a readable formatWww Mmm dd hh: mm: ss yyyy , where,Wwwday of theweek,Mmm is amonth-letter,dd represents the first of the month A fewdays,hh: mm: ss representstime,yyyy represents the year.

Examples

The following example demonstrates asctime () function is used.

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

int main()
{
   struct tm t;

   t.tm_sec    = 10;
   t.tm_min    = 10;
   t.tm_hour   = 6;
   t.tm_mday   = 25;
   t.tm_mon    = 2;
   t.tm_year   = 89;
   t.tm_wday   = 6;

   puts(asctime(&t));
   
   return(0);
}

Let's compile and run the above program, which will result in the following:

Sat Mar 25 06:10:10 1989

C standard library - <time.h>