C++ Async/Await Examples

Can you explain how async and await work in C++?

Sure! In C++, async and await are used to handle asynchronous operations, allowing you to run tasks concurrently.

Can you provide a simple example of using async in C++?

Absolutely! Here's a basic example:

#include <iostream>
#include <future>

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

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

What happens if I don't use await with async?

If you don't use await, the program may continue executing without waiting for the async task to complete, leading to potential issues.

Are there any performance considerations I should be aware of?

Yes, using async can improve performance by allowing concurrent execution, but it also introduces complexity in error handling and resource management.