How do I use async/await in C++?

How do I use async/await in C++?

In C++, async/await is not natively supported like in JavaScript, but you can achieve similar functionality using std::async and futures.

Can you give me an example of how to implement it?

Sure! Here's a simple example:

#include <iostream>
#include <future>
#include <chrono>

int asyncFunction() {
    std::this_thread::sleep_for(std::chrono::seconds(2));
    return 42;
}

int main() {
    std::future<int> result = std::async(std::launch::async, asyncFunction);
    std::cout << "Waiting for result..." << std::endl;
    std::cout << "Result: " << result.get() << std::endl;
    return 0;
}

What does std::async do in this example?

std::async starts a new asynchronous task that runs the function asyncFunction in a separate thread, allowing your main thread to continue executing.

Are there any drawbacks to using std::async?

Yes, potential drawbacks include overhead from thread management and the possibility of exceptions not being handled properly if not managed.