#include <chrono>
#include <iostream>
#include <thread>

using namespace std;
using namespace std::chrono_literals;

int main()
{
    std::jthread c([] { cout << "cogito, "; }),
                 e([] { cout << "ergo "; }),
                 s([](std::stop_token st)
                 {
                     cout << "sum!";
                     while (!st.stop_requested())
                     {
                         cout << " ." << flush;
                         std::this_thread::sleep_for(75ms);
                     };
                     cout << '\n';
                 });
    std::this_thread::sleep_for(1s);
    s.request_stop();
}