Threads count

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

int main()
{
    std::vector<std::thread> threads;
    int counter = 0;

    while (true)
    {
        try
        {
            threads.emplace_back
            (
                []
                {
                    using namespace std::chrono_literals;
                    std::this_thread::sleep_for(3600s)  ;
                }
            );
            counter++;
        }
        catch (...)
        {
            std::cout << "thread count: " << counter << std::endl;
            break;
        }
    }

    for (auto && thread : threads)
    {
        thread.join();
    }
}