How does async programming work in C++?

Can you explain how async programming works in C++?

Sure! Async programming in C++ allows you to run tasks concurrently, improving performance. It uses features like std::async and std::future.

What is std::future and how do I use it?

std::future is a class that represents a value that will be available in the future. You can use it to retrieve results from asynchronous operations.

Can you give me a code example of using std::async and std::future?

Absolutely! Here's a simple example:

#include <iostream>
#include <future>

int compute() {
    return 42;
}

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

This code runs the compute function asynchronously.

What are the benefits of using async programming?

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