@@boredash4020 I mean it's already in there, the code are de-reference the value in that pointer and assigning to the same variable again, it's a waste of CPU and RAM cycle, You can do like this, it will avoid unnecessary assignment for (int i = 1 i < len; i++) { if (ary[i] < *min) *min = ary[i]; else if (ary[i] > *max) *max = ary[i]; }
You did what my community college c programming class does in 3 hours. Seriously, I have an outrageous teacher who couldn’t cover what you covered in our 3 hour long class
I couldn't stop myself from commenting, even by pausing the video, it's really awesome !! No one could explain better than this! So impressive and useful ❤
You are impatient. You should have commented only after watching the full video. Though your remark is very true, but still it is the sign that you lack patience.
First of all, your effort in recording and uploading these useful videos is appreciated. Secondly, I think we need some videos on structures, unions, bit fields and enums with as many extensive examples as you can. Thirdly, could you please include some videos explaining the strings in C ? as you have already talked about arrays and pointers, in order to be more valuable. And thank you again for the obvious effort!
Whoever you are ,doing great work and hope u will upload more questions sets in order to cement the concepts for us .Thank u soo much ,you are inspiration and a great teacher as well as communicator who is able to explain information very very very great manner even a IITian can't explain like that
Thanks for such crystal clear clarifications on this topic... Concepts of pointers are there in our class 11-12 syllabi and I was having many doubts.... Most of them are getting resolved after watching every video in this series. Thank you again...
the question is wrong :: he divided sizeof(a) by sizeof(a[0]) answer:: the sizeof(a) returns the size of the whole array in bytes which is 56 ,and the sizeof(a[0]) returns the size of single integer element in the array which is 4 dividing the both will result in the actual size of the array which is 14..... count the elements in the array if you want. the size of integer will change by compiler to compiler. hope you understand TC : )
Thanks a Lots Sir.. ❤️❤️. But, Sir I have a doubts that when you declare the minMax() in line no 5, the name of array passed as parameters is arr[ ]. While in the line no 19, 21 and 22 the name of the same array is a[ ]. Doesn't it produce it any errors ???
sir, in every video till now first we initialized a variable and a pointer separately. then we assigned the value to the pointer. ex : int max = 100 int *ptr = &max However, in this case, I noticed that you had a variable called max and you directly wrote *max as the pointer which points the variable. you didn't do this - int max = 100 int *max = &max SO, are both approaches same?
Hi Neso Academy, I would like to thank a lot for your works on all the Video, it's really such a great Academy. I want to ask a question about the example : you wrote : void minMax(int arr[], int len, *min, int *max) . . . minMax(a, len, &min, &max) But can we write : void minMax(int arr[], int len, *min, int *max) . . . minMax(a, len, &Largest, &Smallest) ?? I mean it should be the same words between the void function and in the main function ?? Thx in advance.
your second way of writing it is fine when we call a function, the names of the parameters we pass in don't have to be the same as the names in the function definition (if they did have to be the same, that would make the function a bit less useful) (the important thing is that the types of variables in the function call have to exactly match the types in the function definition but I'm sure you know that, and that wasn't what you were asking)
you can always write a program in your own million ways but what he was trying to explain was the use of pointers specifically in a situation like this where you want to change the value for the variables. For better understanding see a lecture on call by reference and call by value.
Please sir make a video series on communication system. It will be very helpful to us. We couldn't found proper video for communication in any other channel so please sir help us
Sir why did you use arr[ ] in user define function but in main function it is different a[ ] ... Why sir plz explain plz plz plz ... And can I take same in both function .. ??
he used "arr[ ]" in user define function to receive array a[ ] from main function. you can use any name to receive data from main function because the scope of the variable. if you don't know about scope look it up. and yes you can also use same in both function but it is a good pratice to use different and meaning full name for variables because interviews are strict about variable names,indentation etc : )
Can someone clarify my doubt here, what's the need of using pointers in the minmax example ? Like I've done the same without pointers, but I got a different answer. Reason ?
can anyone explain a little why "void minmax" is written , I've always coded with "int minmax" . can anyone point me the differences between void and the int. i know its related with the return type, but still thereis much confusion.
I now understand this topic, but I don't know why is it intended to be done in this way? in other programming languages you just pass the array to the function and the length,min,max could be defined as a part of the function itself and in the end you could return the value of min,max and then in the main function you just call the function minMax and store it's values in new min max variables and the code become cleaner from my point of view? Am I thinking in the wrong way here ? could this be done in C? I'm not sure if a function can return 2 values, but it has to be possible inside an object or something.
but sir the len variable is declared in the main function , how can we use it in the minmax fun , and we're not using it as pointer so that shouldnt be possible please explain
Sir , you have not declared minMax here , I tried doing the program , it was showing error saying that minMax is an undeclared identifier. Please explain sir .
Ohh finally I get it I was also confused at first, he has declared func name minmax where elements of array a will be passed to arr array.. I was also fucked at first time now I have realized..
No it is not necessary as the compiler first goes into the main program by default and when we call the function at that time the control goes to the function
Here is a simplified version : "" #include int main() { int a[] = {23, 45, 6, 98}; int min, max; min = max = a[0]; for (int i = 1; i < 3; i++) { if (a[i] < min) { min = a[i]; } if (a[i] > max) { max = a[i]; } } printf("max = %d ", max); printf("min = %d ", min);
Yes, it's one of the simplest possible programs for this objective.. But I think he explained this simple case by using functions and pointers so that later, we feel comfortable with such things for even more complex programs.
Can someone tell me why inside the "void minMax(....)" function, it is written that "*min=*max= arr[0]" why pointer is not initialized by giving address like "*min=*max= arr". I mean that arr will give address but arr[0] will give value.
From what I understood, the two integer pointers 'int *min' and 'int *max', are already initialized by calling the function minMax(a, len, &min, &max). Notice that '&min' and '&max' are used here, so that 'int *min' and 'int *max' will be pointing to the address of min and max. This method is also named "pass by reference".
try to make some code by yourself. try to understand how it works. it's also an algorithm so you don't have to study algorithm, you are already doing an algorithm
I don't understand the use of pointer I mean why u cant u just simply change the value of the variable without declaring it outside the function just initialise it without mentioning the data type u just need to declare those variable globally
idk why the application example here is something that can be done without pointers? that doesn't really help me understand the need for pointers if I can use a simple for loop to do this.
You can also use tertiary operator;
for (int i = 1; i < len; i++)
{
*max = *max > arr[i] ? *max : arr[i];
*min = *min < arr[i] ? *min : arr[i];
}
bro its ternary
@@deepaktechk basically saying if the condition does not match the value should remain the same
@@boredash4020 I mean it's already in there, the code are de-reference the value in that pointer and assigning to the same variable again, it's a waste of CPU and RAM cycle,
You can do like this, it will avoid unnecessary assignment
for (int i = 1 i < len; i++)
{
if (ary[i] < *min)
*min = ary[i];
else if (ary[i] > *max)
*max = ary[i];
}
You did what my community college c programming class does in 3 hours. Seriously, I have an outrageous teacher who couldn’t cover what you covered in our 3 hour long class
I finally understand pointers.
I really couldn't understand pointers until I found your videos. Thank you so much for such an awesome content!
Ys
I'm same as you mio ,really awesome explanation.
I couldn't stop myself from commenting, even by pausing the video, it's really awesome !! No one could explain better than this!
So impressive and useful ❤
code with harry yt channel
You are impatient.
You should have commented only after watching the full video.
Though your remark is very true, but still it is the sign that you lack patience.
This is the exact video that helps me understand what the pointer means. Thanks for such a genius instructor!
Finally, pointer entered into my brain.
Thank you ♥
I finally understand the difference between calling by value and calling by reference.
First of all, your effort in recording and uploading these useful videos is appreciated. Secondly, I think we need some videos on structures, unions, bit fields and enums with as many extensive examples as you can.
Thirdly, could you please include some videos explaining the strings in C ? as you have already talked about arrays and pointers, in order to be more valuable.
And thank you again for the obvious effort!
Gee your videos are GOLD. I'm starting to understand pointers quite well going through everything. Thanks for the effort, it is much appreciated.
This was fantastically explained, awesome tutorial, greetings from the United States.
Thank you for all your hard work, your videos are an excellent source for learning C.
Whoever you are ,doing great work and hope u will upload more questions sets in order to cement the concepts for us .Thank u soo much ,you are inspiration and a great teacher as well as communicator who is able to explain information very very very great manner even a IITian can't explain like that
the best ever video i have ever seen on pointers
the video was good but i think bubble sort was suitable for this
Thanks for such crystal clear clarifications on this topic... Concepts of pointers are there in our class 11-12 syllabi and I was having many doubts.... Most of them are getting resolved after watching every video in this series. Thank you again...
All videos clearify our basic concepts of C .......thanks to encourage us and make these videos free for everyone ❣️
Sir please provide the complete lecture as early as possible. Thanku for great content.😊😊
sir didn't understand why len=sizeof(a)/sizeOf (a[0]); if we do like that we get length is equal to 0
U nailed it Sir.... Excellent
I was asked in interview for mnc company, why we go for pointers when we have normal variables?
Plz Giv ans for this question
It makes the compilation fast
@@vishnu1156 thanks bro
Because it make changes to the actual variables in main function
@@snehalsardesaipointers save memory space
Awesome explanation ❤💯. Keep up the good work.
brother,can you explain me please why'd he use pointers ?
hats off to neso academy. excellent content
Is it work for negative numbers??
Please ad the subtitles (in english)
enlightening. Thank you very much!
This video helped me a lot, It solved my problem. Thank you.
Beautiful explanation! thank you very much
Sir please complete lectures of signal and system
Why have you divided sizeof(a) by sizeof(0) to find length of array
the question is wrong :: he divided sizeof(a) by sizeof(a[0])
answer:: the sizeof(a) returns the size of the whole array in bytes which is 56 ,and the sizeof(a[0]) returns the size of single integer element in the array which is 4 dividing the both will result in the actual size of the array which is 14..... count the elements in the array if you want.
the size of integer will change by compiler to compiler.
hope you understand TC : )
@@sairupesh1344 thanks buddy I was confused on that .... Because I didn't see before it ...
See his old videos posted related to arrays
in order to the count be exactly with the type of data you want to count.
sizeof() gives size in bytes . Hence , we have to divide it by the size of datatype . Sir has explained it in previous videos .
Thanks a Lots Sir.. ❤️❤️.
But, Sir I have a doubts that when you declare the minMax() in line no 5, the name of array passed as parameters is arr[ ].
While in the line no 19, 21 and 22 the name of the same array is a[ ].
Doesn't it produce it any errors ???
No
Hope.you will start python too, a great scope these days
C++ is again NO 1 Language by ranking
@@mbadar4093 Java is no 1
sir, in every video till now first we initialized a variable and a pointer separately. then we assigned the value to the pointer.
ex :
int max = 100
int *ptr = &max
However, in this case, I noticed that you had a variable called max and you directly wrote *max as the pointer which points the variable. you didn't do this -
int max = 100
int *max = &max
SO, are both approaches same?
ok, got the answer to my problem. you passed the memory addresses of max and min to maxmin function and that's how the pointers got initialized.
thank you so so much you are the best
Sir please upload video upon binary tree in data structure..
In the idea, it is the mistake that in 2nd condition you mentioned arr[i] in the place of a[i];
So, Please edit it...
I request u to cover gate syllabus completely for this data structures and algorithms and c thank u
Thx man, you explannation is dope 😉
Hi Neso Academy,
I would like to thank a lot for your works on all the Video, it's really such a great Academy.
I want to ask a question about the example :
you wrote : void minMax(int arr[], int len, *min, int *max)
.
.
.
minMax(a, len, &min, &max)
But can we write :
void minMax(int arr[], int len, *min, int *max)
.
.
.
minMax(a, len, &Largest, &Smallest)
??
I mean it should be the same words between the void function and in the main function ??
Thx in advance.
yeah....same doubt
your second way of writing it is fine
when we call a function, the names of the parameters we pass in don't have to be the same as the names in the function definition (if they did have to be the same, that would make the function a bit less useful)
(the important thing is that the types of variables in the function call have to exactly match the types in the function definition but I'm sure you know that, and that wasn't what you were asking)
Can I use strlen() for determining the length of array
Sir we can find min and max using normal functions also..so why pointer i mean what is the difference using pointer and functions please explain..
you can always write a program in your own million ways but what he was trying to explain was the use of pointers specifically in a situation like this where you want to change the value for the variables. For better understanding see a lecture on call by reference and call by value.
Just u know Its Application.
And for reusability we can create function and calls whenever we want
Thank you.. really thanks
I love you bro 😂😂❤❤
Sir please upload videos on computer organization and architecture🙏🙏🙏🙏🙏🙏
Thank you sir for this video.
why code blocks doesn't give any output for pointers
# Windows
Please sir make a video series on communication system. It will be very helpful to us. We couldn't found proper video for communication in any other channel so please sir help us
awsome..as always
Protip return multiple values using arrays
in the 1st explanation i.e using for loop what will happe3if both the values became equal
Thankyou neso academy
very educational, worth more than hours of not very useful lessons
Thanks a lot
Here in condition i
Can we use pointers to array??
Thank you sir
Sir why did you use arr[ ] in user define function but in main function it is different a[ ] ...
Why sir plz explain plz plz plz ...
And can I take same in both function .. ??
he used "arr[ ]" in user define function to receive array a[ ] from main function.
you can use any name to receive data from main function because the scope of the variable.
if you don't know about scope look it up.
and yes you can also use same in both function but it is a good pratice to use different and meaning full name for variables because interviews are strict about variable names,indentation etc : )
@@sairupesh1344 thanks
@@sairupesh1344 bro but int a[ ] is used in main body so how it can be used as global variable??
Best content 🔥🔥
thank you
Can someone clarify my doubt here, what's the need of using pointers in the minmax example ? Like I've done the same without pointers, but I got a different answer. Reason ?
Thankyou sir
can anyone explain a little why "void minmax" is written , I've always coded with "int minmax" . can anyone point me the differences between void and the int. i know its related with the return type, but still thereis much confusion.
Same:/
@Mahin Khan void means it doesn't return anything. And the function minmax does not. It simply changes min and max in the main function via pointers.
I now understand this topic, but I don't know why is it intended to be done in this way? in other programming languages you just pass the array to the function and the length,min,max could be defined as a part of the function itself and in the end you could return the value of min,max and then in the main function you just call the function minMax and store it's values in new min max variables and the code become cleaner from my point of view? Am I thinking in the wrong way here ? could this be done in C? I'm not sure if a function can return 2 values, but it has to be possible inside an object or something.
Awesome channel amazing
Why the name of array in function call(name of array 'a') and function definition(arr) is different??
I also have the same doubt
@@santhoshsiva281 because arr is an array which acts as a pointer which points to a.
but sir the len variable is declared in the main function , how can we use it in the minmax fun , and we're not using it as pointer so that shouldnt be possible please explain
because it's pass by value we are passing value of len variable to void function which creates another copy of len variable with same value.
meko ek doubt hai ki a[ ] ko function mein arr [ ] kyun use kiya
Sir , you have not declared minMax here , I tried doing the program , it was showing error saying that minMax is an undeclared identifier. Please explain sir .
Sir....then what is the difference between pointers and call by reference in c.....I'm not getting..plz expalin
Thank u
sir, where is the arr array declared and initialised?
Ohh finally I get it I was also confused at first, he has declared func name minmax where elements of array a will be passed to arr array.. I was also fucked at first time now I have realized..
sir, can we not specify the size of the array in initializing it???
5 value of *p
Hello sir
I haive doubt
What will be the output
printf("%d","");
Output is 173 but how
This question was asked in my bca exam
Plz help me sir
why can't I use the sizeof() instead of creating that variable len ?
sizeof() gives size in bytes . Hence , we have to divide it by the size of datatype . Sir has explained it in previous videos .
Actually i didn't understood why sir has not declare the function above int main() ?????? Anyone ?
Output =5
sir shouldn't we write our main program first and later function
I have tried in that way compiler is showing " Int I is not defined"
please reply sir
No it is not necessary as the compiler first goes into the main program by default and when we call the function at that time the control goes to the function
Have you declared function prototype when you wrote main program first and then function.
Here is a simplified version :
""
#include
int main()
{
int a[] = {23, 45, 6, 98};
int min, max;
min = max = a[0];
for (int i = 1; i < 3; i++)
{
if (a[i] < min)
{
min = a[i];
}
if (a[i] > max)
{
max = a[i];
}
}
printf("max = %d
", max);
printf("min = %d
", min);
}
""
Output ;
""
max = 45
min = 6
""
Yes, it's one of the simplest possible programs for this objective.. But I think he explained this simple case by using functions and pointers so that later, we feel comfortable with such things for even more complex programs.
i cannot understand why you did &min and &max when you called the function
This video was hella confusing. IMO you should type the code with us(That is better for me). But great video !
Problem is that it is not see clear down side because remove the English line word
Can someone tell me why inside the "void minMax(....)" function, it is written that "*min=*max= arr[0]" why pointer is not initialized by giving address like "*min=*max= arr". I mean that arr will give address but arr[0] will give value.
From what I understood, the two integer pointers 'int *min' and 'int *max', are already initialized by calling the function minMax(a, len, &min, &max). Notice that '&min' and '&max' are used here, so that 'int *min' and 'int *max' will be pointing to the address of min and max. This method is also named "pass by reference".
sir in functions you have made a mistake
you have declared arr[0] which is not even defined
It is defined in function
why i didnt get the right value after try to run it
For This concept i watached at least 10 video, still some misconcept was there in my mind. This video heped me to erase them all.
Len =sizeof(a)/sizeof(a[0]) ye kya hua hai
Index/number of elements calculate krne keliye.
I can understand the code but can't understand the logic
What should i do
Should i learn algorithms ?
What algorithm is applied in this program?
try to make some code by yourself. try to understand how it works. it's also an algorithm so you don't have to study algorithm, you are already doing an algorithm
@@beypazariofficial ok thanks
I don't understand the use of pointer I mean why u cant u just simply change the value of the variable without declaring it outside the function just initialise it without mentioning the data type u just need to declare those variable globally
It will show segmentation fault
*p = 5
Ee videos chusthe c motham vasthadha?
75%
5
no
now i can hack planes
Can anyone explain why this throws an Error!
#include
void minmax(int,int,int,int);
int main()
{
int a[]={15,65,98,78,2,1,55,34};
int max,min,lenght;
lenght= sizeof(a)/sizeof(a[0]);
minmax(lenght,&min,&max,a);
printf("%d\t%d",min,max);
}
void minmax(int len,int *min,int *max,int arr[])
{
int i;
*min=*max=arr[0];
for(i=1;i *max)
*max=arr[i];
}
}
Sir vo arey nhi array hai XD
your code does not work!!!
Noice great
OOOOOOOOOHHHHHHHHHHHHHHHHHHHHHHHHH
kuch bhi samaj me nahi aaya
idk why the application example here is something that can be done without pointers? that doesn't really help me understand the need for pointers if I can use a simple for loop to do this.