What is asynchronous programming in C++?

What is asynchronous programming in C++?

Asynchronous programming in C++ allows tasks to run concurrently without blocking the main thread, improving performance.

How do I implement async functions in C++?

You can use the <future> library, which provides std::async to run functions asynchronously and retrieve results later.

Can you give me an example of using std::async?

Sure! Here's a simple example:

#include <iostream>
#include <future>

int asyncTask() {
    // Simulate a long-running task
    std::this_thread::sleep_for(std::chrono::seconds(2));
    return 42;
}

int main() {
    std::future<int> result = std::async(std::launch::async, asyncTask);
    std::cout << "Waiting for result..." << std::endl;
    std::cout << "Result: " << result.get() << std::endl;
}

What are the benefits of using asynchronous programming?

The benefits include improved responsiveness, better resource utilization, and the ability to handle multiple tasks simultaneously.