How do I handle errors in C++ threads?

How do I handle errors in C++ threads?

In C++, you can handle errors in threads using try-catch blocks. You can also use futures and promises to manage exceptions.

Can you give me an example of using futures for error handling?

Sure! You can create a future from a thread and check for exceptions like this:

#include <future>
#include <iostream>
#include <stdexcept>

void threadFunction() {
    throw std::runtime_error("Error in thread");
}

int main() {
    std::future<void> fut = std::async(std::launch::async, threadFunction);
    try {
        fut.get(); // This will throw if the thread function throws an exception
    } catch (const std::exception& e) {
        std::cout << "Caught exception: " << e.what() << std::endl;
    }
}

What if I want to handle multiple threads and their errors?

You can use a vector of futures to manage multiple threads. Each future can be checked for exceptions individually after all threads complete.