#include <iostream>
#include <thread>
#include <string>
#include <mutex>
#include <memory>
#include <vector>

std::mutex consoleMtx;

void writeString(const std::string &string)
{
    consoleMtx.lock();
    std::cout << string << std::endl;
    consoleMtx.unlock();
}

std::vector<std::thread> startThreads()
{
    std::shared_ptr<std::string> sharedString(new std::string("I can't believe you've done this")); // When does this string get destroyed? Don't know, don't care.
    std::vector<std::thread> tp;
    for(unsigned char i = 0; i < 4; ++i)
    {
        tp.emplace_back([](std::shared_ptr<std::string> string){writeString(*string);}, sharedString);
    }
    return tp;
}

int main()
{
    auto tp = startThreads();
    for(auto &t : tp)
    {
        t.join();
    }
}