sm24-5.cpp

#ifdef NOJUDGE
#include <iostream>
#include "test.cpp"

int func(int a, int b)
{
    std::this_thread::sleep_for(std::chrono::seconds(1));
    return a + b;
}

struct functor
{
    void operator()(int v) {
        std::cout << v << std::endl;
    }
};

int main(int argc, char *argv[])
{
    functor f;
    async_launch(std::function<int (int, int)>(func), f, 2, 6);
    std::this_thread::sleep_for(std::chrono::seconds(2));
    return 0;
}

#endif