C++ help, trying to learn and implement chrono & ctime at the same time

Iam doing this:

	auto clockNow = std::chrono::system_clock::now();
	auto clockDateNow = std::chrono::system_clock::to_time_t(clockNow);
std::cout << "finished computation at " << std::ctime(&clockDateNow);

And i get this compiler error: " ‘ctime’: This function or variable may be unsafe. Considering using ctime_S instead. To disable depcrecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. "

Best regards!

PS First timer, using ctime and kinda chronos too…

Let met guess, are you using Visual Studio?

the *_s variants are Microsoft specific and will not be able to be cross compiled for other systems. I suggest you just ignore these errors, or use a different function.

1 Like

Yes youre right sir! vs 2017… thanks!

PS hi again, so how exactly do i do that lol

Basically, just stick with chrono and ditch ctime. In the link theres a way to get time from chrono.

Actually ctime_s is part of C11, which means to use it in gcc you will need to just specify -std=c11.

The _s stands for safe, as you provide a buffer to return the value into rather then using a shared buffer that could get updated when writing multi threaded applications.