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#include <iostream>
#include <thread>
#include <mutex>

std::mutex  mutex_console;

void f()
{
    std::lock_guard<std::mutex> guard(mutex_console);

    std::cout << "print function f()" << std::endl;
}

int main()
{
    std::string lol = "LOOOOL";
    std::string* lol_addr = &lol;

    std::thread t_f1(&f);
    std::thread t_f2(&f);

    {
        std::lock_guard<std::mutex> guard(mutex_console);

        std::cout << "lol = " << lol << std::endl;
        std::cout << "lol_addr = " << lol_addr << std::endl;
        std::cout << "lol_addr value = " << *lol_addr << std::endl;
    }

    t_f1.detach();
    t_f2.detach();

    return 0;
}