c语言中时间调用函数为 c中时间函数怎么用( 五 )

clock()/CLK_PER_SEC is a time in
seconds.
time_t time(time_t *tp)
time returns the current calendar time or -1 if the time is not available. If tp is not NULL,
the return value is also assigned to *tp.
double difftime(time_t time2, time_t time1)
difftime returns time2-time1 expressed in seconds.
time_t mktime(struct tm *tp)
mktime converts the local time in the structure *tp into calendar time in the same representation used by time.
The components will have values
in the ranges shown. mktime returns the calendar time or -1 if it cannot be represented.
The next four functions return pointers to static objects that may be overwritten by other calls.
char *asctime(const struct tm *tp)
asctime*tp into a string of the form
Sun Jan3 15:14:13 1988\n\0
char *ctime(const time_t *tp)
ctime converts the calendar time *tp to local time; it is equivalent to
asctime(localtime(tp))
struct tm *gmtime(const time_t *tp)
gmtime converts the calendar time *tp into Coordinated Universal Time (UTC). It returns NULL if UTC is not available.
The name gmtime has historical significance.
struct tm *localtime(const time_t *tp)
localtime converts the calendar time *tp into local time.
size_t strftime(char *s, size_t smax, const char *fmt, const struct tm *tp)
strftime formats date and time information from *tp into s according to fmt, which is analogous to a printf format.
Ordinary characters (including the terminating '\0') are copied into s. Each %c is replaced as described below,
using values appropriate for the local environment.
No more than smax characters are placed into s. strftime returns the number of characters, excluding the '\0',
or zero if more than smax characters were produced.
%a abbreviated weekday name.
%A full weekday name.
%b abbreviated month name.
%B full month name.
%c local date and time representation.
%d day of the month (01-31).
%H hour (24-hour clock) (00-23).
%I hour (12-hour clock) (01-12).
%j day of the year (001-366).
%m month (01-12).
%M minute (00-59).
%p local equivalent of AM or PM.
%S second (00-61).
%U week number of the year (Sunday as 1st day of week) (00-53).
%w weekday (0-6, Sunday is 0).
%W week number of the year (Monday as 1st day of week) (00-53).
%x local date representation.
%X local time representation.
%y year without century (00-99).
%Y year with century.
%Z time zone name, if any.
%%%
【c语言中时间调用函数为 c中时间函数怎么用】关于c语言中时间调用函数为和c中时间函数怎么用的介绍到此就结束了，不知道你从中找到你需要的信息了吗？如果你还想了解更多这方面的信息，记得收藏关注本站。