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C Date and time utilities

c日期和时间实用程序

功能

在标头中定义<ctime>

*。

时间操纵

衍射时间计算时间的差值%28%函数%29

时间作为时间返回系统的当前时间，因为时代%28功能%29。

时钟自程序启动后返回原始处理器时钟时间%28功能%29

时间语c[医]获取%28，因为C++17%29根据给定的时基%28函数%29返回日历时间

格式转换

提升时间将tm对象转换为文本表示形式%28功能%29

时间转换时间[医]对象为文本表示形式%28函数%29

strftime将tm对象转换为自定义文本表示形式%28功能%29

wcsftime将tm对象转换为自定义宽字符串文本表示形式%28功能%29。

gmtime将自历法以来的时间转换为日历时间，表示为通用协调时间%28功能%29

本地时间将自纪元以来的时间转换为以本地时间%28功能%29表示的日历时间

mktime自历法%28功能%29起，就会不时地转换日历。

常数

CLOCKS_PER_SECnumber of processor clock ticks per second (macro constant)

类型

tmcalendar time type (class)
time_ttime since epoch type (typedef)
clock_tprocess running time (typedef)
timespec (since C++17)time in seconds and nanoseconds (struct)

另见

c日期和时间实用程序的文档

*。

 © cppreference.com

在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。

http：//en.cppreference.com/w/cpp/crono/c

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