What is the difference between std::exception and try-catch in C++?

What is the difference between std::exception and try-catch in C++?

In C++, std::exception is a base class for all standard exceptions, while try-catch is a mechanism for handling exceptions.

Can you give me an example of how to use try-catch with std::exception?

Sure! Here's a simple example:

#include <iostream>
#include <stdexcept>

int main() {
    try {
        throw std::runtime_error("An error occurred");
    } catch (const std::exception& e) {
        std::cout << "Caught: " << e.what() << std::endl;
    }
    return 0;
}

When should I use std::exception instead of just using try-catch?

You should use std::exception when you want to throw or catch exceptions in a type-safe manner, allowing for better error handling.

Are there any performance implications of using exceptions in C++?

Yes, using exceptions can have performance implications, especially if exceptions are thrown frequently. It's best to use them for exceptional cases.