What are async futures in C++11?

Can you explain what async futures are in C++11?

Sure! Async futures in C++11 are part of the standard library that allows you to run tasks asynchronously and retrieve their results later.

How do I use std::async to create a future?

You can use std::async by calling it with a function and its arguments. It returns a std::future object that you can use to get the result.

What happens if the task takes too long?

If the task takes too long, you can use the future's wait_for or wait methods to manage the timeout and handle the situation accordingly.

Can I cancel a future once it's running?

No, once a future is running, you cannot cancel it. You would need to design your task to check for cancellation conditions.