An overview of struct in C. Source code: github.com/por.... Check out www.portfolioc... to build a portfolio that will impress employers!
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@PortfolioCourses7 ай бұрын
Also note in this video when we assign y to x, this would *also* be a memory leak, which is bad! 🙂 I was trying to stay focused on structs in this video, but this other video covers memory leaks which are important to avoid: kzbin.info/www/bejne/ooKmfXSBm8iMf5Y.
@OCEAN-fc9wl Жыл бұрын
This channel is awfully underrated. Respect.
@PortfolioCourses Жыл бұрын
Thank you so much for the kind feedback, I really appreciate that. :-)
@SIGSEGV2008 ай бұрын
frfr
@daishakpatel224 Жыл бұрын
There can't be a better video on structs other than this one on youtube. Pretty much everything covered in one video.
@PortfolioCourses Жыл бұрын
Thank you for the positive feedback Daishak, I'm glad to hear you enjoyed the video! :-)
@Peter_1986 Жыл бұрын
Structures confused the hell out of me when I started reading about them; this video made them much more clear.
@hyperphenomenal4360 Жыл бұрын
this is the best c tutorial in entire youtube, i have been searching for months and now got the best content for c, thank you so much man
@naparcasc9 ай бұрын
Very clear explanation about how pointers contain a reference to some area in memory and not the content of that memory area itself and why you need to be extra careful when reasigning pointers. Thank you so much for your work!
@togotog1330 Жыл бұрын
This channels quality content gonna be remembered for generations he teaches clear and concise thank you sir for your service to this populace
@PortfolioCourses Жыл бұрын
Thank you very much for sharing such positive feedback, that really motivates me to keep going with these videos! :-)
@Algebraiic Жыл бұрын
Once again an EXCELLENT tutorial! You really make me love C, honestly.
@PortfolioCourses Жыл бұрын
Thank you very much for the positive feedback! :-) And I’m glad these videos are encouraging your own enthusiasm about C, I definitely love using it!
@Russerdreng11 ай бұрын
My teacher is totally useless. This channel is the only thing, keeping me from failing. Thank you so much, you have a knack for explaining hard material so a noob can understand it.
@PortfolioCourses11 ай бұрын
You’re very welcome, I’m really happy to hear you’re finding the channel helpful! :-)
@nephewtechnologies8 ай бұрын
After you explained struct I was about to leave to find a video about typedef then you explained it. Great video!
@PortfolioCourses8 ай бұрын
I'm glad you liked it! :-)
@daved11132 жыл бұрын
This is perfect. Thank you. Pretty much everything you need to know about structs all in one easy to understand video.
@PortfolioCourses2 жыл бұрын
You’re welcome! Thanks for sharing that you enjoyed it, that’s excellent to hear! :-)
@undercoverz998 ай бұрын
its crazy how such high quality material is hidden on the internet. your videos should have millions of views!
@PortfolioCourses8 ай бұрын
I’m glad you enjoy them! :-)
@lradhakrishnarao9022 жыл бұрын
You have explained the topic of shallow copy operation very well.
@PortfolioCourses2 жыл бұрын
Thank you! :-)
@phytoplancton4038 Жыл бұрын
you are my favourite teachher so far thank youuu
@PortfolioCourses Жыл бұрын
Wow, thank you so much, you're welcome! :-)
@mah-b Жыл бұрын
using this video to study for structs on my next exam and you made everything super clear holy crap
@PortfolioCourses Жыл бұрын
I’m glad the video made everything super clear, and good luck on your final exam! :-)
@dollyguarana707710 ай бұрын
I've learned so much about C these last two/ three months thanks to you :)! Muito obrigado pelos seus vídeos!!!
@PortfolioCourses10 ай бұрын
I’m so glad to hear these videos are helping you out, thank you for sharing this! :-)
@pasej5 Жыл бұрын
This is by far the best video on struct, very good content.
@PortfolioCourses Жыл бұрын
I'm glad that you enjoyed it, and thank you for sharing this positive feedback! :-)
@nunomartins467 Жыл бұрын
I wanted to ask something about the data struct and when you declared x = y. That struct only has a pointer variable so when you did x = y you are assigning the pointer value of y to x right? That's why when modifying x.array[0] if you print both x.array[0] and y.array[0] they have the same value, so in that example as we assigned the x pointer variable to be the same as y we lost the pointer to the original array that x was pointing to right? It still exists in memory but we can't used it?
@jcamargo2005 Жыл бұрын
Yes, the block is still on the heap, but we lost the pointer. It is one way to produce a memory leak
@naboulsikhalid7763 Жыл бұрын
wow, struct fully explained. Thank you for helping me and others to understand what you r self strive for.
@PortfolioCourses Жыл бұрын
You’re very welcome Naboulsi, I’m glad the video helped you out! :-)
@yourfriend5144 Жыл бұрын
Omg thank you so much, this is so much better than two two hours lectures i had on structs... I have an exam next week and gonna watch the other videos on pointers and strings if you have any❤❤❤
@adamaqil1965 Жыл бұрын
You helped me a lot understanding struct. Thanks!
@PortfolioCourses Жыл бұрын
You’re very welcome Adam! :-)
@fadieid56382 жыл бұрын
Very clear and concise, thank you for this quality content.
@PortfolioCourses2 жыл бұрын
You’re welcome Fadi! I’m glad to hear you enjoyed the video. :-)
@ramakrishna40922 жыл бұрын
@@PortfolioCourses hi sir I am having a doubt why we used strcpy to assign string to structure members of " name and ID " Instead OF ASSIGNING directly like normal structure variable of age and grades . I have tried to assign string to structure members of "name and ID " when I compiled my code I got an error . why and what is the difference can you pls explain me ???😊
@PortfolioCourses2 жыл бұрын
@@ramakrishna4092 We can initialize the string when we declare the struct using an initializer list as in this example: www.delftstack.com/howto/c/c-initialize-struct/. But if we first declare the struct, and then set the members with individual assignment statements, we cannot later use = to assign to the string. It's like how in C we can initialize an array once with the {1,2,3,4,...} type syntax, when it is declared, but not afterwards. When we make a char array we can initialize it once to a string literal when it is declared: char string[] = "store this string"; But if we had this it would not work: char string[20]; string = "store this string"; The same thing is happening here essentially, when we declare the struct the string is essentially declared and created similar to the above example. We cannot assign to it later with = "some string", we then need to use strcpy(). It's just how C works that it's like this really. 🙂
@birukgessessegudeta3629 Жыл бұрын
Thank you very much, please keep uploading videos. Much love!
@PortfolioCourses Жыл бұрын
You’re welcome, and I’ll definitely keep uploading videos! :-)
@ItachiUchiha-jj9tm Жыл бұрын
that thing i can only comment is it was so clear... thanks and good luck!!!!!
@PortfolioCourses Жыл бұрын
You’re welcome Itachi! I’m glad you found it clear. :-)
@RustysAdventures2 жыл бұрын
Wow! This video really blew me away. Great video to learn struct
@PortfolioCourses2 жыл бұрын
I'm glad that you enjoyed it! 😀
@MrBlaze7778 ай бұрын
This is truely a detailed source Thank you bro!!
@PortfolioCourses8 ай бұрын
You're very welcome! :-)
@bhavik_1611 Жыл бұрын
The best explanation on struct ever!!
@PortfolioCourses Жыл бұрын
Thank you very much for the kind feedback, I’m glad you’re enjoyed it! :-)
@ilayohana31506 ай бұрын
Hopefully your courses will help me get an A in my technician year. Good work
@fifaham8 ай бұрын
@4:00 Hi Kevin, I have watched this before and would love to learn how to copy this struct from an Excel Spread Sheet, and Paste it and Save it to Excel Spread Sheet. I appreciate if you have the time to do a video on that. This makes a very useful tool for embedded design. Thanks a million, Kevin.
@PortfolioCourses8 ай бұрын
Is the Excel filed saved as a CSV file? That may be do-able. If it's not some kind of binary .xls format I'm not sure how. :-)
@fifaham8 ай бұрын
CSV file would do it, yes.
@todualuka5713 Жыл бұрын
Thank you, You did very good explanation with exampels. You finally made me learn to use structs properly and to pass them correctly to different functions.
@PortfolioCourses Жыл бұрын
You're welcome! :-) I'm really glad to hear that this video helped you to learn how to use structs!
@thomaskitaba Жыл бұрын
hammer on a nail. Simple short to the point.
@mohamedhossam3645 Жыл бұрын
your channel is a gem
@PortfolioCourses Жыл бұрын
Thank you for the positive feedback Mohamed, I appreciate it! :-)
@yunosukemiro880210 ай бұрын
Sir,can I know which compiler you use
@Jonathan-mu5nx Жыл бұрын
best tutorials you can find!
@PortfolioCourses Жыл бұрын
Thank you very much for the positive feedback Jonathan! :-)
@Jonathan-mu5nx Жыл бұрын
@@PortfolioCourses always helping mate. thank you so much! i have an assignment now with an array of struct to represent items in a shop (name, price, amount). they asked us to make a program with different functions so the user can add a product and buy a product from that shop and so the array has to be synchronized between all functions. I don't know how to make it happen because we didn't learn pointers yet.
@PortfolioCourses Жыл бұрын
@@Jonathan-mu5nx I have some videos on pointers and structs you might like: Introduction To Pointers: kzbin.info/www/bejne/aHinmot9areZhKc Arrow Operator: kzbin.info/www/bejne/rWa7fmSEbM1_ncU Dynamically allocate an array of structs: kzbin.info/www/bejne/oqKbpX2JaMxpqrs Good luck! 🙂
@rohmaabdulfattah2582 Жыл бұрын
Thanks for this wonderful, clear and succint explanation
@PortfolioCourses Жыл бұрын
You're welcome Rahmat, I'm glad you enjoyed it! :-)
@aminebadri5118 Жыл бұрын
thank you for making it easy on us champ.
@ramisa_draws5 ай бұрын
Thank you! this video made so many things clearer for me! Any chance you'll make SDL tutorials for C?
@PortfolioCourses5 ай бұрын
I don’t have plans to right now but maybe it’s something I can do one day. :-)
@ramisa_draws5 ай бұрын
@@PortfolioCourses yeyy, thank you!
@blockcrafterxy6967 Жыл бұрын
Love your videos! Learned more in two weeks than 5 months of studying. I have one question tho: When calling the function (at around 9:10 in the video) I get the error: a parameter list without types is only allowed in a function definition; when I try to compile it. (the error for the function call in the main body)
@PortfolioCourses Жыл бұрын
The source code for the video is here, does using this help? github.com/portfoliocourses/c-example-code/blob/main/struct.c
@derekdannaldson1906 Жыл бұрын
el mejor video explicando structs, gracias por hacer este video!
@PortfolioCourses Жыл бұрын
de nada! :-)
@karolinariddle63592 жыл бұрын
thank you, the best content I have seen about this topic. Great! :)
@PortfolioCourses2 жыл бұрын
You’re welcome Karolina, and thank you for the positive feedback! :-)
@chrislazarou268210 ай бұрын
which IDE do you use?
@mdanishossain0262 жыл бұрын
thremendous tutorial in c fullplaylist is superb sir ❤❤❤💖💖💖💖💖💖
@PortfolioCourses2 жыл бұрын
I’m really happy to hear that you’re enjoying the tutorial and playlist! :-D
@anastasiosvervantidis20268 ай бұрын
Your introduction is very elaborate and comprehensive 😁. But Kevin 40 is quite old for a student, isn't he? 🤣
@PortfolioCourses8 ай бұрын
He’s a mature student. :-)
@nicholasjoiles89992 жыл бұрын
very detailed. Thank you. 💯💯
@PortfolioCourses2 жыл бұрын
You're very welcome Nicholas! :-D
@deep2mixer9 ай бұрын
Excellent ..very good channel.
@AnalogDude_9 ай бұрын
19:55 x = y, wouldn't that be a memory leak? since you lost the original pointer (location) with the data still being there.
@luckydev3911 Жыл бұрын
quick question, what happens to the previous malloc'ed memory region of x after pointing it to y? does it just float in memory to be reclaimed by the OS later?
@PortfolioCourses Жыл бұрын
It's a memory leak. :-) Which means the memory has been allocated, but is no longer accessible by our program. It also won't be "returned" to the OS until the program terminates. So we call it a memory leak because the memory is no longer available for our program, but it's also not being used in a useful way either.
@dbak6924 Жыл бұрын
thank you! very good explaining😄
@PortfolioCourses Жыл бұрын
You're welcome, I'm glad you enjoyed the explanation! 🙂
@starstuff606 Жыл бұрын
thanks for the video, and great presentation
@PortfolioCourses Жыл бұрын
You're welcome, I'm glad you enjoyed it! :-)
@fedibaklouti323911 ай бұрын
Can i know why you didn't use the typecasting with malloc in this case Or at least recommend a video to me to understand ,and thanks ❤️❤️
@michaelbenard6758 Жыл бұрын
I have seen alot of your videos and are helpful, I have a little problem how would I get computer serial Number. system("wmic get bios serialnumber>sn.txt"); And store it in an array of character and then print it on screen.? I really need help with that.
@Anonymous-XY11 ай бұрын
Thank you, Amazing work.
@PortfolioCourses11 ай бұрын
You’re welcome, and I’m glad you enjoyed it! :-)
@ابوأحمد-ث9ت4ض Жыл бұрын
Best c tutorial ever
@ltcqqn2 жыл бұрын
very helpful! thank you so much
@PortfolioCourses2 жыл бұрын
You’re welcome! :-)
@Avionics195811 ай бұрын
Great video. I have a question. What's the difference between a struct and class? And when to use them. I know class is by default private but how to use these two terms properly.
@zacherymcclendon394510 ай бұрын
I don’t think C has classes that’s C++ but I’m also confused on like why classes were a necessary change from C to C++ I’m pretty sure it has something to do with OOP but I’m not too sure
@zacherymcclendon394510 ай бұрын
Just looked it up I guess classes have a deinitializer function that destroys instances of the class so I guess you can’t tell if the structs are getting destroyed
@jayjenous76012 жыл бұрын
I'm learning C, i'm an amateur wannabe from python, can i take the structs as objects, and the variables declared from the structs as instances?, I feel them like that
@PortfolioCourses2 жыл бұрын
Great question Jay! :-) And yes that’s correct, when we define a type of struct it’s a lot like defining a class in Python (in other words, a type of object). And when we declare variables of that struct type, those are a lot like object instances.
@jayjenous76012 жыл бұрын
@@PortfolioCourses thanks boss, i was kinda Lost on this till i related structs with classes
@PortfolioCourses2 жыл бұрын
You’re welcome! :-)
@lradhakrishnarao9022 жыл бұрын
difference between structs and class is that in structs, functions are private and data members are public, while in class, it's opposite. However, C does not have any concept of objects, as we don't instantiate. In C, structures are mainly used for the purpose of grouping various information under one name.
@shashank12able Жыл бұрын
@@lradhakrishnarao902
@shanjosebastian84822 жыл бұрын
Nice tutorial.... Very helpful
@PortfolioCourses2 жыл бұрын
Thank you for the kind feedback Shanjo! :-)
@jcamargo2005 Жыл бұрын
23:00 In case it was not mentioned, you also get a memory leak on the x.array block, and a duplicate reference to the y.array block... Common pitfalls to the begginers...
@PortfolioCourses Жыл бұрын
Yes, we need to watch out for these things. :-)
@svenwaibel70078 ай бұрын
Great channel with great explanations, thank you! I just fiddled around with memory and leaks. I hope this is correct and may help someone. #include #include typedef struct { int *array; } Data; void print_array(const char *name, Data data) { printf("Array %s ", name); for (int i = 0; i < 2; i++) { printf("%i: %d ", i, data.array[i]); } printf(" "); } void separate_data() { Data x; x.array = (int *) malloc(sizeof(int) * 2); x.array[0] = 1; x.array[1] = 8; print_array("x", x); Data y; y.array = (int *) malloc(sizeof(int) * 2); y.array[0] = 9; y.array[1] = 9; print_array("y", y); free(x.array); free(y.array); } void same_data() { Data x; x.array = (int *) malloc(sizeof(int) * 2); x.array[0] = 1; x.array[1] = 8; print_array("x", x); Data y; y.array = (int *) malloc(sizeof(int) * 2); y.array[0] = 9; y.array[1] = 9; print_array("y", y); // deallocate memory of x because pointer x will be moved to y free(x.array); x = y; print_array("x=y", x); free(y.array); } int main() { separate_data(); same_data(); }
@lradhakrishnarao9022 жыл бұрын
I have a question. In the assignment of structures, does the addresses of the structures also gets copied? E.g., When we do p1 = p2, does p1 also contains the address of p2?
@PortfolioCourses2 жыл бұрын
Great question! :-) No, p1 and p2 each have their own address at which a struct is stored. And when we do p1 = p2, a memcpy() will effectively happen where p2's contents are copied to p1. But p1 and p2 each still are in different memory addresses.
@alexander-ud9bs Жыл бұрын
thank you for this great job
@nkurikiyimanaaimable9004 Жыл бұрын
awesome content always my go to
@PortfolioCourses Жыл бұрын
I'm so glad to hear you're enjoying the content! :-)
@ashokvarma30545 ай бұрын
Thanks!
@amandaliu7409Ай бұрын
very helpful thank you
@MrMits922 жыл бұрын
do we need to free() the x and y array somehow, since we use malloc() ?
@MrMits922 жыл бұрын
i actually found a solution: we need to free x.array before we make x=y assign, then at the very end we free y.array. I was trying to free both x and y array at the very end but there was still a leak, so hope it might help someone check for leaks on Mac with: CK_FORK=no leaks --atExit -- ./a.out
@MrMits922 жыл бұрын
#include #include #include typedef struct { int *array; // pointer to dynamically allocated array } Data; int main() { // initialise two structures named x and y of type Data Data x; Data y; // stores 5 int in dynamically allocated array x.array = malloc(sizeof(int) * 5); y.array = malloc(sizeof(int) * 5); printf(" X's pointer: %p ", x.array); printf("Y's pointer: %p ", y.array); x.array[0] = 1; x.array[1] = 2; x.array[2] = 3; x.array[3] = 4; x.array[4] = 5; printf(" ////// x.array /////////// "); for(int i = 0; i < 5; i++) { printf("x.array[%d] = %d ", i, x.array[i]); } y.array[0] = 9; y.array[1] = 9; y.array[2] = 9; y.array[3] = 9; y.array[4] = 9; // 'x' with it's pointer to the array it has been set to point to the same array that 'y' is pointing to // so they point to the same array, // cuz the STRUCTURE STORES A POINTER TO THE ARRAY THAT WE DYNAMICALLY ALLOCATE free(x.array); // free up the allocation before we assign x = y; // here we see that they both now point to the same pointer for an array printf(" X's pointer: %p ", x.array); printf("Y's pointer: %p ", y.array); printf(" ////// x.array after assign to y /////////// "); for(int i = 0; i < 5; i++) { printf("x.array[%d] = %d ", i, x.array[i]); } printf(" "); // if we change one value of x array, those changes apply also to the y, cuz after x=y assign they both point to the same array x.array[0] = 10; printf(" ////// y.array after x.array[0] was changed /////////// "); for(int i = 0; i < 5; i++) { printf(" y.array[%d] = %d ", i, y.array[i]); } printf(" "); free(y.array); return 0; }
@PortfolioCourses2 жыл бұрын
@@MrMits92 That is correct!
@danieldevito4147 ай бұрын
I absolutely love these videos, but I think it's important to point out that when you use malloc, you have to free the space before reassigning the pointer, or a memory leak is created. And I only say this because the dementia patients in the Whitehouse just urged us all to stop using these languages for this reason.
@PortfolioCourses7 ай бұрын
You're right, I was trying to stay focused on structs in this video and keeping it to a reasonable time, I've made note of this and pinned a link to this other video on memory leaks now: kzbin.info/www/bejne/ooKmfXSBm8iMf5Y
@dimphomokoena4982Ай бұрын
Please do pointers
@didierleprince610619 күн бұрын
Merci a LOT 🙂
@jmesguerra26645 ай бұрын
so structs is a class without functions?
@PortfolioCourses5 ай бұрын
In C, essentially yes. :-) In C++ struct is a lot more like class though, just so you know: learn.microsoft.com/en-us/cpp/cpp/classes-and-structs-cpp?view=msvc-170
@muhammadmahmoud20542 жыл бұрын
1:42 A forty years old student! I guess you never stop learning ;-)
@PortfolioCourses2 жыл бұрын
Hahaha :-)
@skeeberk.h.4396 Жыл бұрын
This is heaven 😍
@PortfolioCourses Жыл бұрын
I'm glad you enjoyed the video! :-)
@stonedcodingtom90972 жыл бұрын
Thx!
@PortfolioCourses2 жыл бұрын
You’re welcome! :-)
@user-cd7xk9jv3k Жыл бұрын
Amazing
@PortfolioCourses Жыл бұрын
I'm glad you liked it! :-)
@mimicmian11 ай бұрын
謝謝!
@PortfolioCourses11 ай бұрын
WOW thank you very much for the super thanks!!! :-D
@didierleprince6106 Жыл бұрын
Génial !
@PortfolioCourses Жыл бұрын
Thanks! :-)
@Graham_Rule8 ай бұрын
The popup tools in your editor are too distracting.
@pedroalmeida84535 ай бұрын
Just fo us tf 😂
@mdsalmanfarse89148 ай бұрын
You teach very good undoubtedly but if you could give separate examples of every items instead of massing everything in a single code, it would be better to understand for us.... You can copy and paste from the previous code that you needed for the next example but please give separate examples instead of giving a very long example.
@AA-mf2up9 ай бұрын
you dont have enough place in char name for osas
@drissnafi3Ай бұрын
10:00
@JeremyakАй бұрын
tfw you're Kevin
@ryanalnaser9142 жыл бұрын
whatever anything I do or did
@ryanalnaser9142 жыл бұрын
whatever anything I know or knew or do or did and in 7:14 or more you did something you know what I mean
@ryanalnaser9142 жыл бұрын
I am not sure when exactly and whatver anythign
@ryanalnaser9142 жыл бұрын
Anything*
@ryanalnaser9142 жыл бұрын
whatever anything I do or did or anything
@ryanalnaser9142 жыл бұрын
whatever anything
@danielpopa13202 жыл бұрын
11:23
@PortfolioCourses2 жыл бұрын
Do you have a question? 🙂
@cscor Жыл бұрын
Thanks!
@PortfolioCourses Жыл бұрын
Wow thank you so much for the 'super thanks'!!! :-D