How can I handle errors in C++17?

How can I handle errors in C++17?

In C++17, you can use exceptions for error handling. You can throw exceptions when an error occurs and catch them using try-catch blocks.

What types of exceptions should I use?

You can use standard exceptions like std::runtime_error or create your own custom exception classes for specific error types.

Can you show me an example of using exceptions?

Sure! Here's a simple example:

#include <iostream>
#include <stdexcept>

void mightGoWrong() {
    bool errorOccurred = true;
    if (errorOccurred) {
        throw std::runtime_error("Something went wrong!");
    }
}

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

This code demonstrates throwing and catching a runtime error.

What about using std::optional for error handling?

Using std::optional is a great way to handle functions that may fail without throwing exceptions. It allows you to return a value or indicate failure by returning an empty optional.