How does exception handling work in C++20?

Can you explain how exception handling works in C++20?

Sure! In C++20, exception handling is done using the try, throw, and catch keywords. You can throw exceptions when an error occurs and catch them to handle the error gracefully.

What are the new features in C++20 related to exceptions?

C++20 introduced concepts like std::unexpected and std::terminate for better control over exception handling, along with improved support for coroutines.

Can you give me an example of using throw and catch?

Absolutely! Here's a simple example:

#include <iostream>

void mayThrow() {
    throw std::runtime_error("An error occurred!");
}

int main() {
    try {
        mayThrow();
    } catch (const std::runtime_error& e) {
        std::cout << e.what() << std::endl;
    }
}

This code throws an exception and catches it to print the error message.

What should I avoid when using exceptions in C++?

It's best to avoid using exceptions for control flow, ensure exceptions are not thrown from destructors, and be cautious with resource management.