Thank you very much for the kind feedback! :-)

Thank you very much for sharing this kind feedback with me, it's very encouraging for me to hear that these videos are helping you out and that you're enjoying the teaching style. :-D

Could u help me understand how to store and edit information in a file that's in like a table?

You're very welcome! :-)

You're welcome! I'm glad to hear you found it clear and easy to understand. :-D

You're welcome! 😀

Thank you, I'm glad you enjoyed it! :-)

You’re welcome, I’m glad you enjoy the tutorials! :-)

Thank you! I love reading the comments, the people that watch these videos tend to be very supportive. :-)

I'm so glad to hear you're enjoying the content, and thank you for the support Okibe! :-)

You're welcome! :-D

You're very welcome, and thank you for the kind feedback! :-)

You're welcome! 🙂

You’re welcome! Thanks for all the encouraging feedback.

You're welcome Abdelmuniem, I'm glad you enjoyed the explanation! :-)

You're welcome Idan I'm glad you enjoyed the explanation, and thank you for the very positive and encouraging feedback too. :-)

I’m glad to hear this helped you Edward, and I hope you get the job! :-)

You’re very welcome, and good luck on the assignment! :-)

You're welcome! 😀

You’re welcome Yusuf! :-)

I think it's because of the file position indicator inside our object of the type FILE , I know it may sound complicated but it's not !! when we say FILE *object = fopen("x.txt","r") ; we are actually creating a variable(object) of type struct and inside this struct there is variable that changes each time we call fgets or fgetc .. notice every time we call those function we are passing our object of of FILE(struct) type as pointer so changes will apply and remain in our main object, maybe my explanation is not totally accurate because object is a pointer of type FILE but I think the logic of it is like that. the question that popped up into my mind is how is it possible write to a txt file the same way u write to the console, it's strange to me and it does not make sense but I did some researches and people are saying that everything in our computers is files,what the F**k they mean by that , it does not make any sense , it does not make any sense because our brains get mess up with too much abstraction from windows,I think an operating system course is needed to understand these topics so yea I'm going to take one, sorry if I wasted your time !!

You're welcome, I'm glad you enjoyed the video! :-)

Great question Saud! :-) You could do something like this: fscanf(file, "%f %f", &dblvar1, &dblvar2); You might find this related video interesting: kzfaq.info/get/bejne/fcehZJN4p9K2enU.html

I agree. :-)

You're very welcome Robel! :-)

Great question Krishna! :-) I am using Terminal on Mac OS, which is a "bash shell", a type of shell that is used in Unix-like systems like Linux and Mac OS. A Windows shell is different and does not support the same commands. So something like 'touch' will not work on Windows. You could use a text editor instead to create a file and open it though. In many situations Windows will have a command that allow us to do 'the equivalent' of what we can do with a Terminal command: stackoverflow.com/a/37756874. It's also possible to get a Linux shell on Windows using things like Windows Subsystem for Linux, but that can be a fair bit of work and would be challenging for new beginners I think (though it may be a good learning experience).

Aww thanks Barkot that is such nice positive feedback and it means a lot to me! :-)

In this video I am using Visual Studio Code as a text editor and the gcc compiler with the terminal on a Mac. :-)

Great question Steve. 🙂 Where is the output in the terminal coming form? Is it text that the user is typing in? Or is it output from the program that is running?

Like reading data from a file into a struct?

Great question! :-) Basically, if we store data into variables, the data will disappear when our program stops execution. Storing data into a file allows us to retrieve the data later, even if we restart our program, or even our computer. Storing data into a file also allows us to make copies of the file, and share the file with others.

You might find this video interesting if I’m understand what you are asking correctly: kzfaq.info/get/bejne/hcePncxkyaqqlas.htmlsi=ZOfk9MAH--lfCKV1

And this video may be of interest too: kzfaq.info/get/bejne/rLeeopyEmN-qaGQ.htmlsi=rnRtjymSMC5jjI2F

Thank you Vinamr! :-D

You're welcome Mohammad! 🙂 Maybe one day I can create a course on advanced C, but I think a course on advanced C would probably be many courses covering different subtopics like threads, networking, etc.

Great question Pagani! :-) When we call exit() the program will exit, and the argument we provide to exit() will be the status code. If we have exit(0) the program will exit with status code 0, which is considered 'success'. If we have exit(1) or exit(-1) the program will exit with status code 1 or -1, both of which are considered 'error' (any non-zero exit status code is considered 'error'). When we use return 0 in main the program will exit with status 0, and if we use return 1 in main the program will exit with status 1. But we can only use return to exit the program in main. If we want to exit the program in other functions, we can use exit instead. So that's the biggest difference.... with exit we can exit the program in any function. This video covers exit(): kzfaq.info/get/bejne/brilltuEyqfJnas.html. The other thing we can do with exit is setup functions to run when the program exists, this video covers that topic: kzfaq.info/get/bejne/f9Fjod2h05uwn3k.html. Hopefully this helps! :-)

@@PortfolioCourses wow, thank you !

@@paganimarker1898 You're welcome! 🙂

Maybe I'll make a video on this soon! In the meantime, this answer here is pretty good, you basically can use fscanf() with %f and %lf to read in floats and doubles from a file: stackoverflow.com/a/7152018

Some additional info, the way I wrote to the file was: fprintf(fp, "Peter %d ", userNames(varOne));

So there isn't really a super easy answer to this question, it's a bit tricky. There are a few ways you could do it. :-) You could read each entire line into a string (char array) and then use strtok() to pull out the integer you're interested in. These examples might help with that approach, the link to the video tutorial is at the top of the file in the comments: github.com/portfoliocourses/c-example-code/blob/main/file_lines_to_string_array.c github.com/portfoliocourses/c-example-code/blob/main/strtok.c Another way to do it would be closer to the way this 'read from CSV file' example uses fscanf(), again the link to the video is at the top of the file: github.com/portfoliocourses/c-example-code/blob/main/csv_to_struct_array.c So at the bottom of that code there is a loop that uses fscanf() to read the data from the file. If you had variables: char name[2048]; int number; You could then have fscanf: fscanf(file,%2048[^0123456789]%d ",name,&number); To read in each number, in a similar way to that example. You would then have to add the numbers together.

@@PortfolioCourses Wow thanks dude, I'm gonna go through all of this step by step. There is so much to learn😮... I remember someone saying "C is easy and beginner friendly, it only has 32 keywords". 🤣 By the way your content is absolutely GREAT.🏆🥇🏆

@@DaRza17 Oh wow haha I would say C is one of the less forgiving languages, especially compared to something like Python. 🙂 And thank you for the kind words I'm glad to hear you enjoy the content!

Thank you David! :-)

Basically the feof() function returns true when we reach the end of a file, and false otherwise. This explains more: www.tutorialspoint.com/c_standard_library/c_function_feof.htm. I may try to make a video on feof() specifically though, that might be something people would be interested in. :-)

@@PortfolioCourses thanks for the response.Can u see this statement is this correct? It's important to note that feof only tells you if you've reached the end of the file after you've tried to read past it.

I believe that statement is correct, yes. :-)

Here you go, a new video on the feof() function: kzfaq.info/get/bejne/i89gnMd8nqrMYGg.html

Great question Pagani! :-) We could use "a" for append and that will also create the file if it doesn't exist. This article does a good job talking about the different access modes: www.geeksforgeeks.org/basics-file-handling-c/.

@@PortfolioCourses Thank you

You're welcome! :-)

I’m glad you enjoyed it! :-)

Great question Emanuel! :-) Though the answer is essentially.... because that's how fgets() works. It stops at the first newline it encounters. If you want to read all the file contents into a string this video might help with that: kzfaq.info/get/bejne/eeBxmrBmx8veXZs.html.

@@PortfolioCourses i just watched the video and it's great the way you explain it, thank you very much!!

@@emanuel_ramaci Awesome, and you're welcome! 🙂