#include <iostream>
#include <boost/fiber/all.hpp>

int main()
{
    auto say = []<typename T>(const T& t)
    {
        std::cout << "[" << boost::this_fiber::get_id() << "]: " << t << std::endl; 
    };

    say("cogito,");

    boost::fibers::fiber f1(say, "sum");
    
    say("ergo");

    boost::fibers::fiber f2([&]
    {
        for(auto i : {1, 2, 3})
        {
            say(i);
            boost::this_fiber::yield();
        }
    });
    f2.join();
        
    boost::fibers::fiber f3([&]
    {
        for(auto c : {'a', 'b', 'c'})
        {
            say(c);
            boost::this_fiber::yield();
        }
    });
    
    boost::fibers::fiber f4([&]
    {
        for(auto c : {'x', 'y', 'z'})
        {
            say(c);
            boost::this_fiber::yield();
        }
    });

    say("bye");

    f1.join();
    f3.join();
    f4.join();
}