Arrays as function arguments

[@AlyMabrouk2012]

even after 8 years ,these tutorials are still masterpiece

[@greagarious44]

I m a Masters Student and I must say that your tutorials are highly professional and clear. Your channel is a must watch !!

[@turing_machine544]

He is a legend ..watching in 2020 (1st year college student)

[@Razvi]

These tutorials are helping a lot of people out there and they will never get outdated. I agree with your words about meritocracy in industry instead of actual skills. Thank you :D

[@row-v8o]

for future references (or anyone watching this video) at 4:20, some of us may get different outputs. the size of a pointer variable in his system (32 bits) will be 4 bytes, but the size of pointer variable in 64 bit systems will be 8 bytes. So dont be surprised when u obtain a different output!

[@nathamuni9435]

sizeof(A) = 8 , sizeof(A[0]) 4 Sum of elements = 3 sizeof(A) = 20 , sizeof(A[0]) 4 -------------------------------- Process exited after 0.6451 seconds with return value 31 Press any key to continue . . . mine

[@СтасюкАндрій]

yep, just wondered why is that a thing thank you!

[@leixun]

*My takeaways:* 1. When compiler see an array is passed (by value) to a function argument, it will not copy the entire array to the function, instead it will create a pointer to the first array element. Therefore, it is essentially pass by reference 2:53 2. We need to pass the size of array specifically to called function 9:00

[@mehulsaini9645]

bro can u tell what's wrng in my code,plss as in this video he said that 'int *a' is equal to 'int a[]' so instead of 'int*fun(int)' i used 'int [] fun(int)',but its not working : //// #include using namespace std; int [] fun(int n) { int *p; p=(int *)malloc(n*sizeof(int)); return (p); } int main() { int *a; a=fun(5); return 0; } //////

[@gamoholic7653]

@@mehulsaini9645 int* a equals to int[a] was only valid for formal parameter not as a return type..

[@MohitSingh-om8jt]

Absolutely incredible. Never thought pointers could be taught so gracefully

[@ahmedsamy-lc1ux]

11 years later and this is still Legend👐

[@shivamverma9447]

This video of 13min will clear all your doubts........This teacher is just amazing.....

[@BL4S7ER]

I have no C experience but have used other languages. I spent alot of time searching for decent tutorials on C. Your videos are well explained, informative and delivered well. *EXCELLENT Thank you for taking the time and effort to produce them.

[@vigneshmanoharan3770]

For those of you working in 64 bit OS, the size of pointer would be 8, instead of 4 as shown in video.

[@hussameldinrabah5018]

+Vignesh Manoharan in dev c++ compiler, we have 8 bytes int .. in Codeblocks, 4 bytes >> my laptop is 64 bit OS

[@saurabhkumarjha4996]

he is stupid bro

[@adrijabose4598]

Ya thanks I had this confusion

[@mrlegend3983]

Thanks bhai

[@youssefandroid6512]

سبحان الله الله يجزيك بالخير اخي مشاء الله شرح راءع الله يجعله في ميزان حسنتك

[@codekarlebhai]

watching in 2023, still relevant and far better then other lectures out there on internet

[@praveen.sharma]

Brilliant Teaching , absolute clearance of Concepts , Respect you Sir !

[@tusharikas5447]

when I asked my friends about int a[] and int *a being treated similarly. I realised they had no idea about it! Your videos are too good.

[@SmartProgramming]

great explanation sir, lot of concepts has explained very well, helpful for students, thanks 👍👍

[@mycodeschool]

Thanks a lot !

[@ekta2109]

In main method,2nd line- total = SumofElements(A); Here when we r using A then only base address will be passed as u told in previous lecture that using A means base address.. This is confusing me😣how whole array is being passed..how will we differentiate where only base address will be passed and where whole array..

[@kalpanasharma618]

@@ekta2109 I have the same doubt!

[@ashish3944]

@@ekta2109 whole array is never passed. If you have the base address of the array with you then you can get the elements of the array simply by writing *(A+0), *(A+1), *(A+2) etc because the value stored in A is a memory location. To put it simply.....in order to have access to the whole array you just need to know the base address of that array(provided that you know the no. of elements in it).

[@saumyojitdas4212]

@@ashish3944 in this *(A+0) is A the pointer variable or array itself (A[]) as mentioned in the video when a pointer points to base adrres of array that pointer implicitly becomes an array . therefore in SOE function this statement is working sum=sum +A[i]; but at the same time in SOE there is no array there is a local pointer which points to a local array present in main func . THat means any pointer pointing to base adrres of array that *pointer implicitly becomes an array* .

[@NoobsDeveloper]

Best every video watched in all the category of videos. Incredible!

[@arjuntrivedi1771]

Alot to learn from these lectures. Great stuff.👏👏👏

[@eson3092]

Thanks a lot. The array assigned to function is explained so well that I understand the tricky in one second.

[@idmila]

AMAZING EXPLANATION, THANKS SO MUCH. I've already done so many tasks with arrays as function arguments but it was always somehow blurry to me why I do something or why I have to write it in a certain way. Thank you for clarifiying it in such a nice and systematic way! wow! simply impressive teaching skills!! :)

[@sowmyakola470]

really u r doing awesome job.the best tutorials on c ,i hav ever seen.

[@563woodcock]

you are a genius...better than professors with heavy degrees

[@hetalpandya6137]

Sir these lectures are really helping me.. Easy to understand and very helpful. My basics are cleared by watching the video..

[@animeshnayan1]

@Pine Drew: Yes, you need to pass the array size as extra parameter. This is a limitation for array only. In C, there is no other way, but in C++, you can use vectors (or other collection types in standard template library). An object of vector will basically be a dynamic array with length as one of its properties. So, you will not pass the length as extra parameter.

[@bhargavchaitanya]

Why size is required as second argument??

[@t.sathwik5708]

this video cleared so many doubts regarding arrays as func.arguments

[@osmm7848]

man you're a legend ! my teacher fucked up in that size part and she had probblems in her programme .. And know because of u I understand this easly , Thanks a lot

[@tarungupta6822]

i really wanted to share it with you...you are the best teacher i have ever seen..i have studied your data structures series which were best ..with the help of those lectures i have completed my linked list project..so thnnkewww so much sir...The work you r doing is really ostentatious...

[@azizas9366]

Why don't be a professor ? You are very good at teaching Thanks

[@mycodeschool]

I do not have the heavy degrees to become a professor :P

[@AbhimanyuAryan]

mycodeschool does degree matters in getting a good job in India if one is extremely intelligent on computers? If a guy with a knowledge of all the programming languages but passing on margin in semester exams in a stupid college VS an IIT graduate with very limited knowledge....who will company prefer? I know about outside India but not in India...Indians put so much stress on marks over knowledge and excellence

[@way2razerz]

Abhimanyu Aryan Well the one with IIT and low tech stuff is preferred, I guess. At least for competitive exams :)

[@mycodeschool]

Abhimanyu Aryan Degree matters only if you want to take a governmet job. Matters elsewhere only as an initial filter. Industry has mertitocracy. Can't make a sweeping statement like "Indians put too much stress on marks".. I am Indian too and I never bothered to go to a class if the prof was boring even though it affected my grades :P

[@saurabhbhandari6311]

you dont need any degree sir because ur far better then them to explaining concept and by knowledge. And u r inspiration and as well as example that degree doesn't matter if we want be gain knowledge and get success.

[@suigetsuhozuki1]

Most important parts of this lecture: 7:21, 8:55

[@vinalbagaria1203]

You made me love my career as a computer engineer

[@robgur85]

Your explanations are so good!

[@thestarinthesky_]

Thank you Animesh Nayan. Very helpful. You are amazing.

[@onlystudy5733]

I just love you. please keep going❤ I didn't start watching the video yet but I feel happy because I ask youtube question then directly find your unswer 😭big thumbs up 👍👍. Keep helping students ❤❤

[@elonmust6473]

Every useful and clear tutorial

[@lamebrisee]

so clear and simple !! thanks a million :-)

[@bdenix1997]

I was literally wondering why size of the array i get was different when i passed it to a function, calling sizeof inside of that function. and i got the exact answer i was looking for. ty.

[@md.ahmmed8811]

The Hero we need but don't deserve

[@animeshrastogi8315]

Fantastic brother! Easy to understand.

[@adolfocarrillo248]

This guy was incredible, He could explain everything really clear cause he really understood it deeply. I wish, he is getting the best in the other side. RIP my dear friend😥🍻

[@Rajesh-bn5rw]

when he died?

[@thestarinthesky_]

I guess his friend died. He is Animesh Nayan who is alive and working at Google, but his friend- co-founder of MyCodeSchool- passed away

[@hasinanjum6282]

No, he didn't die, the owner of this channel died. But he is not that person.

[@hasinanjum6282]

@@Rajesh-bn5rw NO he didn't die

[@mycodeschool]

Thanks Sowmya !

[@ABDULLAHAAK1]

Tomorrow I have an exam and your videos are very helpful! thanks

[@atharvas4399]

could you do your line about sizeof in the function? also is the condition in for loop evaluated at every iteration of the loop. for eg usually we have a constant ( i < len ) but if its a function that does soemthing ( eg i < getLen() ) is it called after every loop?

[@omaramin5486]

Are there videos for types of user defined functions? i searched for types of user defined functions and i didn't find videos besides thanks for your efforts and really you are one of best programmer teaching this course . :)

[@diegoalvarez2327]

Congrats! Very nice explanation!! Can you please tell me if this logic applies also to an array of a structure and if so, is it possible to add the result (return) of a function as another element to the original structure after applying that function to every element of that array (loop)?

[@dhirajmandal715]

Really very help full....thank u so so much 🔥👍👍

[@vinayagarwal7]

Your just amazing never thought it will be this much simple :)

[@sdafsdaf4844]

u still on youtube

[@letsbeproductive7675]

Excellent teaching,keep going bro,we expect more lectures from you on various technologies

[@gopalpatil6551]

You are excellent teacher....Thanks a lot.

[@tonytran4754]

I love your work. Very helpful. Keep it up.

[@Aabara_ka_dabara]

great lecture sir......

[@563woodcock]

In SumOfElements(A), A can be written as &A which contains the address of the first element of array A, which is equal to 200. In function definition above, int SumOfElements(int A[]) can also be written as SumOfElements(int* A), here it is pointer to the first element of array A. That means it contains the value at address 200, not the address itself. Then how can you say that int* A contains 200 and not the value stored at 200?

[@shanthgaitonde]

Because int* A passed in the function argument is pointer to integer which points to the address of the actual array. Dont get confused btwn dereferencing and pointer to integer concept.

[@TheDaca23]

Thank you very much! Best c tutorial on yt :D

[@basaratali92]

when you calling double function in main body. the function of Double(A, size) arguments pass first index value of array A and size or number elements array A. like that in array A 0 index value is 1 and size is 5. so we call the function in main Double(1, 5). and what did in the actual function body when you use the for loop. 1st indexing value of array A multiply with the 2. so in function body for loop 1 multiply with the 2 five time. when 1st time run loop 1*2 = 2. and 2 replace with 1. when loop goes on next indexing value, next index value in array is 2. again 2 multiply with second element of array. A[i] = 2*A[i]; 1st time run loop = A[0] = 2*1=2; 2nd time run loop = A[1] = 2*2=4; 3rd time run loop = A[2] = 2*3=6; 4th time run loop = A[3] = 2*4=8; 5th time run loop = A[4] = 2*5=10;

[@bakihussain4231]

Hi Sir, I have a question, In this video at 11:17, when u said A can be used for &A[0], I tried &A[1] to &A[6] and every time the value either went up or gave me a pointer value of something. I didn't understand why??

[@rohitsutreja]

A ( the name of the array) point to first element i. e. A[0]. It does not point to A[2], A[3] etc.

[@MohidShaikh4444]

How are we passing "int size" as a function argument, in the 2nd last lecture previous to this lecture, it was shown how "a = 10" wasn't incremented when passed as value. Then how come "int size" is being passed here without any issue. I am a noob so any help is appreciated.

[@bikdigdaddy]

hey! just wanted to add. in the 1st example in this video, he has used the function of the type so the call to the function will return the value while in the last second lecture, he used the function of the type void so in that video, we didn't’t get any return value. you can reply back, if you've already solved it or want more hlep.

[@hvmall16]

Thanks a lot. You make these tricky concepts look so easy. :)

[@zayaerme]

Why can't we do dereferencing to *A in the SOE function if it is pointer to array element and find size of array from there?

[@akashsarma7174]

What compiler are you using? This looks cool.

[@ajayguhan]

from where you learnt so much? amazing!

[@seba23571]

hello friend, one question. what type environment developed are you used in your videos?because i see while you written code in the ide, this go show error sintaxis in time of you go written design, that is before it will be compiled code. this is great.

[@ShaliniNegi24]

Thank you so much, Man! May you prosper :)

[@Dev-zr8si]

He's dead. Died in an accident.

[@AlbertoRivas13]

This is very helpful man thanks a lot

[@taymurahmed7119]

Really you are the best teacher !!! Sir, do you have any projects about c++ ???

[@PraddyumnShukla]

Can somebody explain me that how A[ ] in sumofelements( ) is able to store the copied elements of A[ ] from main if it's size is only 4 ?

[@demonking3153]

I think you are talking about sum+=A[i] here A[i] is same as *(A+i) A has address of first variable

[@unnimayapavithran8330]

You are too good Sir!!#withallrespect

[@snehah1629]

Thanks a lot sir, nice explanation of concepts.

[@pierryangelo]

One thing I didn't understand, once you are passing an array by reference, so the argument A into the function increment is an address to the first position of the array A in the main function. Until there I understood, the things started to complicate because you are multiplying members of an array without using dereference operador like A[i] = 2 * A[i]; instead *A[i] = 2 * (*A[i]); why the logic is different when we deal with arrays? Thanks!

[@mycodeschool]

When we are saying A[i], we have already de-referenced. A[i] is basically *(A+i). Watch this video for clarity: Pointers and arrays

[@gan2ws]

mycodeschool he did say that when you are passing an array into another function, the compiler will automatically convert it to pointers. So even without this * symbol, the compiler will understand.

[@baltatuandrei3836]

+Pierry Ângelo Pereira Pointers and 1d arrays are similar,just that you can't modify an array name,because it is actually a const pointer. Also if you allocate an array using pointer p=new int[10], to get the value of a cell,you can either say p[i] or *(p+i). You can now see the similarities? I hope it helps. Take note that in higher dimension ,pointers and arrays are different in the way it stores the elements. That's why you can't put a static declared 2d array as a parameter to a function that looks like this f(int** p).

[@naineshrathod2392]

can anybody tell me which extensions to add in visual studio code in order to perform c & c++ programs

[@overclockinggames2419]

THANKS A LOT SIR , I LEARNED A LOT

[@dank6617]

So why do Arrays exist if everything can be expressed with pointer arithmetics as *(A+i)? Is it just a notational convenience or does it actually represent some other construct in the memory?

[@alphabet_soup_69]

#include using namespace std; void sumofelements(int *p, int *s){ *s += *p; } int main(){ int sum = 0; int A[]={1,2,3,4,5}; for(int i = 0; i < sizeof(A)/sizeof(A[0]); i++){ sumofelements(&A[i], &sum); } cout

[@sanjeetagrawal9708]

Excellent tutorial.

[@meghna888]

sir,when im calculating size in main it's showing total size 20 and size of a[0] 4 which is correct,but when im calculating it in sumofelements its giving total size 8 and size of a[0] :4,why so?

[@kathirkernel2286]

+Meghna Rawat inside function even the declaration is like an array it almost woks as a pointer. basically sizeof(a) gives size of the pointer and the size of pointer is based on the operating system(32 bit or 64 bit). I think you are using 64 bit machine. so sizeof(a) returns 8 (bytes or 64 bit) inside the method.

[@BlingSco]

I've been wondering why that was the case, please could u give sources and further documentation so I can understand it further. I've been searching for this answer for ages.

[@BlingSco]

Yes I've tested this out myself a 32bit OS return 4 whereas a 64bit returns 8.

[@shanthgaitonde]

The size of the pointer basically depends on the architecture of the system in which it is implemented. For example the size of a pointer in 32 bit is 4 bytes (32 bit ) and 8 bytes(64 bit ) in a 64 bit machines.

[@_kahini]

what happens if initialize A[ ] in the function itself instead of the main function?

[@appiahseth5319]

wow. I've really understood the concept

[@iverpunayan7308]

how can I make the user input a number to my array and sum it up using Function?

[@akshar17]

hey , can you explain the algorithm for generating random numbers in programming languages???

[@yuanwang9896]

I have the SOE in function is size of a = 8 rather than 4. Does it mean my compiler assign a 64 bit RAM address to the pointer?

[@achu4683]

I am facing the same issue, did you get a solution to it?

[@fardeenrazif9377]

So when you pass arrays as function arguments, they are passed as pointer to integer

[@divyambharti8419]

hey i am a teenager and iwant to become a programmer and i have watched the introduction to programming through c and going on further on this i want you to recommend me a book so i can enhance my study program

[@BhargabKakati]

Try Head First series to get started and interested.Good luck

[@RoweroMacka]

#include int sumaelementow(int b[],int ciz) { int suma=0; for(int i=0;i

[@alieser7770]

what if I want to calculate the length of an array in a function in c?

[@MMNayem-dq4kd]

You are a king😍

[@akhil3628]

sir u mentioned, that the SOE function only takes the address of &A[0] and derefenced it...Then how it is able to acceess remaining array elements ??.. u have used for loop for getting A[1] ,A[2]...... but array belonging to SOE didn't store all the remaining elemnts excpt &A[0]...

[@vikramwaradpande5059]

+Akhii 651 You copied address of the first element of the array, right? Now if you know the starting address, you know the addresses of the rest of the elements. This is because members of arrays are stored in consecutive memory locations. Hope this helps.

[@elizabethtejada6834]

How do I do if I want to print on screen three arrays using a function. I alredy did the function to display 3 arrays but I do not get to display them on the screen, I have a void function.

[@hassanmajid4187]

simply cout your arrays inside function argument

[@differentperspective1000]

yrr tu kitna awesome hai

[@GKT196]

#include void Double(int* A, int size) { int i, sum = 0; for(i=0;i

[@TheNiraj8990]

You said A[ ] is basically the same as int *A, and I understand that, but SumOfElements only has the address of the first elements of the array, how does the for loop inside the SumOfElements work if the whole array is not mapped or passed to the SumOfElements. Does the pointer to the address of the first elements of the array increment every time when the for loop runs?

[@yoongix4917]

In the previous code, the size of the array is in the called function, and the loop wouldn't go more than 1 because it read the address of the first element. But when he put the size calculating in the calling function, size is counted within the stack frame, the incrementing can go over 1.

[@hussameldinrabah5018]

when i try 2 make it as a pointer, it gives me a compiler error either in dev or in codeblocks

[@khayalipulao6588]

Why does my compiler shows error when I write void double (int *A, int size) instead of void Double(int *A, int size)?? I m using Dev c++

[@AmjithTitus]

Because 'double' is a keyword just like 'int' whereas 'Double' isn't. Cannot use keywords for names.

[@ekta2109]

In main method,2nd line- total = SumofElements(A); Here when we r using A then only base address will be passed as u told in previous lecture that using A means base address.. This is confusing me😣how whole array is being passed..how will we differentiate where only base address will be passed and where whole array..

[@yarial821]

The array only being passed as the base address. And as mentioned in the video, A[i] is equivalent to *(A+1), which deference the memory address of A+1, we can get the value from the call function...Hope that helps :)

[@basslinejunkies9976]

2:03 what is size of one int????????????

[@levi3535]

4 bytes (depends on architecture tho)

[@aishwaryabhagwat9671]

can anyone tell me where the return sum is used?is it even required? if yes how?

[@jeswintobias8251]

who is watching it at 2023

[@poisonza]

its an old video but, 1:35 sizeof is an operator.. not a function

[@ebrobaaood7691]

8:47 i think it's call by address!

[@alexmathai1998]

amazing video! Thanks so much

[@sakibahmed4317]

why int size =sizeof (A)/size of(A[0]) not work for in SumOfElements(*A )?

[@tunamusic2314]

​@Peterolen I have a misunderstanding is that if we want to transfer all the array A[] into the function SumOfElements() what would we do? and why we make a line sumOfElements( A) then A is a pointer not an array, i dont understanding Can anyone help me with this? Thanks

[@tunamusic2314]

I have a misunderstanding is that if we want to transfer all the array A[] into the function SumOfElements() what would we do? and why we make a line sumOfElements( A) then A is a pointer not an array, i dont understanding Can anyone help me with this? Thanks