Материал из C\C++ эксперт
strftime: format time and date into a string
//Declaration: size_t strftime(char *str, size_t maxsize, const char *fmt, const struct tm *time);
//Command Replaced By
//%a: Abbreviated weekday name
//%A: Full weekday name
//%b: Abbreviated month name
//%B: Full month name
//%c: Standard date and time string
//%C: Last two digits of year
//%d: Day of month as a decimal (1-31)
//%D: month/day/year (added by C99)
//%e: Day of month as a decimal (1-31) in a two-character field (added by C99)
//%F: year-month-day (added by C99)
//%g: Last two digits of year using a week-based year (added by C99)
//%G: The year using a week-based year (added by C99)
//%h: Abbreviated month name (added by C99)
//%H: Hour (0-23)
//%I: Hour (1-12)
//%j: Day of year as a decimal (1-366)
//%m: Month as decimal (1-12)
//%M: Minute as decimal (0-59)
//%n: A newline (added by C99)
//%p: Locale"s equivalent of AM or PM
//%r: 12-hour time (added by C99)
//%R: hh:mm (added by C99)
//%S: Second as decimal (0-60)
//%t: Horizontal tab (added by C99)
//%T: hh:mm:ss (added by C99)
//%u: Day of week; Monday is first day of week (0-53) (added by C99)
//%U: Week of year, Sunday being first day (0-53)
//%V: Week of year using a week-based year (added by C99)
//%w: Weekday as a decimal (0-6, Sunday being 0)
//%W: Week of year, Monday being first day (0-53)
//%x: Standard date string
//%X: Standard time string
//%y: Year in decimal without century (0-99)
//%Y: Year including century as decimal
//%z: Offset from UTC (added by C99)
//%Z: Time zone name
//%%: The percent sign
#include <time.h>
#include <stdio.h>
int main(void)
{
struct tm *ptr;
time_t lt;
char str[80];
lt = time(NULL);
ptr = localtime(<);
strftime(str, 100, "It is now %H %p.", ptr);
printf(str);
return 0;
}
/*
It is now 16 PM.*/
