std::chrono::system_clock::to_time_t-c和c++中文资料站

C&C++标准库

std::chrono::

system_clock::to_time_t

公众成员函数 <chrono>

static time_t to_time_t (const time_point& tp) noexcept;

转换为time_t
将tp转换为time_t类型。

☲ 参数

tp: 时间点值。 Time_point是成员类型，定义为Time_point <system_clock>的别名。

☉ 返回值

等价于tp的time_t。 Time_t是在头文件<ctime>中定义的类型。

☣ 示例

// system_clock::to_time_t
#include <iostream>
#include <ctime>
#include <ratio>
#include <chrono>

int main ()
{
  using namespace std::chrono;

  duration<int,std::ratio<60*60*24> > one_day (1);

  system_clock::time_point today = system_clock::now();
  system_clock::time_point tomorrow = today + one_day;

  time_t tt;

  tt = system_clock::to_time_t ( today );
  std::cout << "today is: " << ctime(&tt);

  tt = system_clock::to_time_t ( tomorrow );
  std::cout << "tomorrow will be: " << ctime(&tt);

  return 0;
}

可能输出:
today is: Wed May 30 12:25:03 2012
tomorrow will be: Thu May 31 12:25:03 2012

🍄 另请参阅

now	获取当前时间 (静态成员函数)
from_time_t	从time_t转换(静态成员函数)