What is the purpose of try-catch-finally in C++?

What is the purpose of try-catch-finally in C++?

The try-catch-finally construct in C++ is used for exception handling. It allows you to manage errors gracefully.

Can you give me an example of how to use try-catch-finally?

Sure! Here's a simple example:

try {
    // Code that may throw an exception
    int result = riskyFunction();
} catch (const std::exception& e) {
    // Handle the exception
    std::cerr << "Error: " << e.what() << std::endl;
} finally {
    // Code that runs regardless of an exception
    cleanup();
}

What happens if I don't use try-catch?

If you don't use try-catch, any exceptions thrown will cause your program to terminate unexpectedly, leading to a poor user experience.

Is finally block mandatory in C++?

No, the finally block is not mandatory in C++. You can use just try and catch blocks without a finally.