std::thread is a C++11 standard library class which represents a single thread of execution. Threads allow multiple functions to execute concurrently.
std::thread is a C++11 standard library type which creates a new thread and runs a function (or other callable object) in that new thread.
Include the <thread> header to use std::thread.
C++20 added std::jthread which automatically .join()s the thread on destruction instead of std::terminate()ing, a generally preferable behavior.
