Return Statement In A Void Function | C Programming Tutorial

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Жыл бұрын

How to use a return statement in a void function in C. Source code: github.com/portfoliocourses/c.... Check out www.portfoliocourses.com to build a portfolio that will impress employers!

Пікірлер: 28

@fifaham Жыл бұрын

Your videos are great review for guys who studied C few decades ago and want to refresh. Thank you Kevin.

@PortfolioCourses Жыл бұрын

I'm glad you think so Firas! :-)

@lenardskie Жыл бұрын

I've never thought we could use return statement like that. Nice vid as always! I've been binge watching your tutorials to build a project for one of our subject XD

@PortfolioCourses Жыл бұрын

Thank you James for the positive feedback and for watching the tutorials, I hope your project goes well! :-)

@amineaitsaidi5919 2 ай бұрын

Void duncions can also return values, but hir their is no restrictions about it's type, you can return multiple type of values in the same function. Juste remember to make structure your program so that the void function don't return a value to a variable that is not compatible with it's type.

@Erlisch1337 Жыл бұрын

Thought I knew all this already but I didnt know about returning another void function call ("return length_error();"). Neat.

@PortfolioCourses Жыл бұрын

Cool, I'm glad to hear that! 🙂

@alexandrstrekalovskiy4083 Жыл бұрын

Красавчик! Очень полезные видео! Давай ещё!)

@PortfolioCourses Жыл бұрын

Благодарю! 🙂

@massimorusso3894 Жыл бұрын

Grazie Professore sto imparando funzione del C che non sapevo 👍👍

@PortfolioCourses Жыл бұрын

È fantastico! :-)

@poisonmods Жыл бұрын

So helpful 🙂

@PortfolioCourses Жыл бұрын

I'm glad it was helpful! :-)

@germankoga8640 Жыл бұрын

Could you make a video covering the topic of Regex? (regular expressions I think).

@PortfolioCourses Жыл бұрын

That is definitely a topic on my list to cover. :-) That's a big topic though so it will take me awhile to get it (along with some other topics I'm dying to get to like makefiles...).

@Awwe12675 Жыл бұрын

Thank you

@PortfolioCourses Жыл бұрын

You're welcome! :-)

@ramakrishna4092 Жыл бұрын

Hi sir I think instead of using return in c we can use EXIT_SUCCESS, EXIT_FAILURE instead of 0 or non zero value . I have seen many people or programmers don't explain about exit sucess and exit failure can you tell me the difference and why it's used ..

@PortfolioCourses Жыл бұрын

Using EXIT_SUCCESS will exit the program with status 0/success, and EXIT_FAILURE will exit the program with status 1/failure.

@ramakrishna4092 Жыл бұрын

Hi sir useful information about Return keyword Thanks a lot . What happens when we do not use return statement in the calling function in C?

@PortfolioCourses Жыл бұрын

By calling function do you mean the main function? We should use a return in main, but if we don't it will default to exiting with 0/success.

@Jorhie Жыл бұрын

hey! which IDE are you using?

@PortfolioCourses Жыл бұрын

In this video I am using XCode on a Mac. :-)

@alexk4894 Жыл бұрын

./program && echo "executed successfully" || echo "Failed!" Your program returns 0 but actually fails with error. I think it would be better to use exit(1) instead. If I'm wrong please correct me. (exit code should be set depending on OS/environment)

@PortfolioCourses Жыл бұрын

The program does not fail with an error, the program exits with a status of 0, which means "success". The source code for the video is available here: github.com/portfoliocourses/c-example-code/blob/main/void_function_return.c. We can get the exit status of the last program run with the command echo $?, and it is 0 after running this program, which means it did not "fail with an error". A main function in standard C has to return a value (see: kzfaq.info/get/bejne/fthho92f0anIZGg.html). So we're going to need to use a return at some point in the main regardless, so we just return 0 (success), especially given this is just a simple 'demo program' for using return in a void function. We could use the exit() function too, yes, if we did that we would probably want to use EXIT_FAILURE an EXIT_SUCCESS as arguments, which are just preprocessor constants for 1 and 0. We would definitely want to use exit() if we want our program to stop execution in functions other than main, or if we have functions setup to run at exit using atexit(): kzfaq.info/get/bejne/f9Fjod2h05uwn3k.html.

@michaelfrankel8082 6 ай бұрын

Just because you can do it doesn't meant you should do it.

@eyoelmekonnen3617 Жыл бұрын

Hi...Can you please make a video on how the printf function is implemented in detail Thank you.

@PortfolioCourses Жыл бұрын

This is on my list of video ideas Eyoel, I've had a number of people request a video on this topic. The only issue is that creating printf() is fairly involved, it's not a simple problem to solve so it's going to be awhile before I can do that video. Implementing the placeholders in printf() is not too bad, that's like this example here: www.equestionanswers.com/c/c-printf-scanf-working-principle.php. But once we get into implementing things like precision, fields, etc, it becomes a large and challenging problem. 🙂