lst-0020-book.cpp
// https://godbolt.org/z/TM6c7cdss
#include <thread>
#include <iostream>
int main() {
std::cout << "Main: " << std::this_thread::get_id() << '\n';
std::jthread th{ []{
std::cout << "Thread: " << std::this_thread::get_id() << '\n';
}};
}