What is the lifetime of threads in C++ standard library?

What is the lifetime of threads in the C++ standard library?

In C++, the lifetime of a thread is determined by the thread object. A thread is alive from the moment it is created until it finishes executing or is joined.

What happens if a thread goes out of scope?

If a thread object goes out of scope before the thread has finished executing, it will result in a call to std::terminate, which ends the program.

How can I ensure a thread completes before the main function exits?

You can use the join() method on the thread object to wait for the thread to finish before the main function exits.

Can I detach a thread? What does that mean?

Yes, you can detach a thread using the detach() method. This allows the thread to run independently, but you won't be able to join it later.