What is the difference between try, catch, and finally in programming?

Can you explain the difference between try, catch, and finally in programming?

Sure! In programming, 'try' is used to wrap code that might throw an error. 'Catch' is used to handle that error if it occurs, and 'finally' is a block that runs after the try and catch blocks, regardless of whether an error was thrown.

Can you give me an example of how they work together?

Absolutely! Here's a simple example in JavaScript:

try {
    // Code that may throw an error
    let result = riskyFunction();
} catch (error) {
    // Handle the error
    console.error('Error occurred:', error);
} finally {
    // This code runs regardless of the outcome
    console.log('Execution completed.');
}

What happens if there's no catch block?

If there's no catch block, the error will propagate up to the calling function or the global scope, potentially crashing the program if unhandled.

Is finally block optional?

Yes, the finally block is optional. You can use try and catch without finally, but if you include finally, it will always execute.