C Library Functions -asctime()
Description
C Library Functionschar *asctime(const struct tm *timeptr)Returns a pointer to a string that represents the structure.struct timeptrdate and time.
Declaration
Below is the declaration of the asctime() function.
char *asctime(const struct tm *timeptr)
Parameter
timeptrIt is a pointer to a tm structure that contains the calendar time broken down into the following parts:
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 containing the date and time information in a human-readable format.Www Mmm dd hh:mm:ss yyyy, where,WwwIndicates the day of the week,MmmIs the month represented by letters,ddIndicates the day of the month,hh:mm:ssrepresents time,yyyyrepresents the year.
Example
The following example demonstrates the usage of the asctime() function.
Example
#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);
}
#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 us compile and run the above program, which will produce the following result:
Sat Mar 25 06:10:10 1989other extensions