static std::time_t to_time_t( const time_point& t ) noexcept; | (since C++11) |
Converts t to a std::time_t type.
If std::time_t has lower precision, it is implementation-defined whether the value is rounded or truncated.
| t | - | system clock time point to convert |
A std::time_t value representing t.
Get the current time as a std::time_t two ways.
#include <iostream>
#include <ctime>
#include <chrono>
#include <thread>
using namespace std::chrono_literals;
int main()
{
// The old way
std::time_t oldt = std::time(nullptr);
std::this_thread::sleep_for(2700ms);
// The new way
std::time_t newt = std::chrono::system_clock::to_time_t(
std::chrono::system_clock::now());
std::cout << "oldt-newt == " << oldt-newt << " s\n";
}Possible output:
oldt-newt == -3 s
|
[static] | converts std::time_t to a system clock time point (public static member function) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/w/cpp/chrono/system_clock/to_time_t