std::chrono::system_clock:: now

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C-style date and time

static std:: chrono :: time_point < std:: chrono :: system_clock > now ( ) noexcept ;		(自 C++11 起)

返回表示当前时间点的时间点。

返回值

表示当前时间的时间点。

示例

运行此代码

#include <chrono>
#include <iostream>
int main()
{
    const auto now = std::chrono::system_clock::now();
    const std::time_t t_c = std::chrono::system_clock::to_time_t(now);
    std::cout << "The system clock is currently at " << std::ctime(&t_c);
}

可能的输出：

The system clock is currently at Thu Mar 30 13:28:27 2023

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Member functions
system_clock::now
system_clock::to_time_t
system_clock::from_time_t
Time point I/O
operator<<
formatter <std::chrono::sys_time>
from_stream

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Variants

std::chrono::system_clock:: now

返回值

示例