What are the differences between threads and async in C++?

What are the differences between threads and async in C++?

In C++, threads are used for parallel execution, while async is a higher-level abstraction for asynchronous tasks.

Can you explain how to use std::thread?

Sure! You can create a thread using std::thread by passing a function or a callable object to its constructor.

What about std::async? How does it work?

std::async runs a function asynchronously and returns a future, which can be used to retrieve the result later.

Which one should I use for better performance?

It depends on your use case. Use threads for fine-grained control and async for simpler, non-blocking code.