cppCycleLoop

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

int main()
{
    const int maxLoop{ 10 };
    const int minLoop{ 0 };

    int loop{ maxLoop };
    int loopStep{1};


    while (true)
    {
        if ((loop >= maxLoop and loopStep > 0) or (loop <= minLoop and loopStep < 0))
        {
            loopStep *= -1;
            std::cout << '\n';
        }

        if (loop >= minLoop and loop <= maxLoop)
        {
            std::cout << loop << ' ';
        }

        loop += loopStep;
        std::this_thread::sleep_for(std::chrono::milliseconds(200)); //make some pause for better output look :)
    }
}