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 is used for exception handling in C++. It allows you to manage errors gracefully.

Can you give me an example of how to use it?

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 terminate the program, leading to a crash.

Is finally block mandatory in C++?

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