How to wait a while in c++ and then perform some action?

Question

C++ / C#

To complete the task, you must wait one second and then subtract the value from the variable, looking for the answer to the question, and found only

#include <windows.h>
int main() {
Sleep(5000);
};

But my compiler swears, here
Help please.

Answer 1

Use std::this_thread::sleep_for
https://en.cppreference.com/w/cpp/thread/sleep_for

Answer 2

zhmyak