C++ Threading vs Asynchronous Programming

What are the main differences between C++ threading and asynchronous programming?

C++ threading involves creating multiple threads to execute tasks concurrently, while asynchronous programming allows tasks to run without blocking the main thread, often using callbacks or futures.

Can you give me an example of how threading works in C++?

Sure! In C++, you can use the <thread> library to create a new thread. For example:

#include <iostream>
#include <thread>

void task() {
    std::cout << "Task is running in a separate thread!" << std::endl;
}

int main() {
    std::thread t(task);
    t.join(); // Wait for the thread to finish
    return 0;
}

What about asynchronous programming? How is it implemented in C++?

Asynchronous programming in C++ can be implemented using std::async from the <future> library. Here's a simple example:

#include <iostream>
#include <future>

int asyncTask() {
    return 42;
}

int main() {
    std::future<int> result = std::async(asyncTask);
    std::cout << "Result: " << result.get() << std::endl;
    return 0;
}