应该如何将C++14共享互斥与lambda捕获和多线程一起使用？

#include <iostream>
#include <shared_mutex>
#include <thread>

int main() {
    std::shared_mutex mutex;
    int sharedData = 0;

    // 读线程
    std::thread reader([&]() {
        std::shared_lock<std::shared_mutex> lock(mutex);
        std::cout << "Shared data: " << sharedData << std::endl;
    });

    // 写线程
    std::thread writer([&]() {
        std::unique_lock<std::shared_mutex> lock(mutex);
        sharedData = 42;
    });

    reader.join();
    writer.join();

    return 0;
}

std::thread writer([&](int newValue) {
    std::unique_lock<std::shared_mutex> lock(mutex);
    sharedData = newValue;
});

writer.join();