Function Pointers In C

[@aman7492]

One of the best usage of function pointers is in setting up the environment .For e.g. when you boot kernel you know that a certain memory location a certain function is present is present . You can call that function directlt knowing what parameters you have to pass.

[@ozancanacar8237]

Amazing content! Just wanted to say that you can also use std::function as a generic function pointer now. Additionally, If you are required to use this on an object's member function you can wrap it with std::mem_fn.

[@warrior5741]

thank you so much for function pointer. i browsed so many sites but i found this channel is very helpful and clear my doubts.

[@CppNuts]

Thanks man..

[@YadavJi-im6mw]

This is the best video for function pointer which covers almost everything about the topic function point thanks for uploading such videos.

[@CppNuts]

+Yadav Ji waao thanks for such a nice comment, i try my best.

[@MemoriesforLives]

I have just became fan of your series...keeping sharing your knowledge with us

[@CppNuts]

+monika sharma, Thanks a lot for such a nice comment.

[@snehashishpaul2740]

It would have taken a lot time for me to understand these concepts. But you have explained it so nicely. Many Many thanks to you Rupesh.

[@CppNuts]

You are most welcome!!

[@karthickrajendran7057]

Real Master of Programming

[@DANMATHEWGAMALE]

i think the last parameter for qsort() function is a comparator function, which usually has return a type of bool.

[@bluehornet6752]

Nice video. The use of function pointers, although relatively simple to start, can quickly get pretty complicated even to the point of obfuscation. Your examples are pretty clear and straightforward. Nice job!

[@CppNuts]

+Tom B Thanks man.

[@sasikumarreddyanipireddy]

This is the best explanation about the function pointer sir..it's so helpful for my practice..am so thankful to you for sharing ur knowledg. Plz update more vedios in C-language

[@ohmnamo7056]

thanks a lot man....you make us understand the exact concepts without any stories....thanks again

[@CppNuts]

Welcome dude..

[@spicytuna08]

got your point. i knew qsort use this. but this is not a dynamic binding. i haven't come across a situation where dynamic binding of function pointers is needed.

[@CppNuts]

This is actually a dynamic binding, when you pass some pointer to some function in this case we are passing function pointer then you can pass any other function pointer at run time, depending on the situations. Example: if(some condition true) qsort(begin, end, fun1); else qsort(begin, end, fun2);

[@ridcully]

Good conversational explanation style

[@CppNuts]

Thanks

[@PerchEagle]

all are excellent questions and the answers are also clear and simple.

[@CppNuts]

Thanks for your comment dude!!

[@danf4321]

Thank you! This video was very informative

[@partha123dbr]

8:57 Please explain how to read the variable fun

[@CppNuts]

Google it, how to read function pointer, because there is very good article. And i can't explain here. OR you can start here: stackoverflow.com/questions/2754586/reading-function-pointer-syntax

[@りょりょりょ-b6s]

fun is a function(int,int) returning pointer to function(int,int) returning int

[@bsgamer5069]

Damn. Indian KZbinr’s tutorial is the best

[@CppNuts]

Thanks man..

[@nickeax]

Thanks, it was very helpful.

[@CppNuts]

Glad it helped!

[@mytech6779]

Does the compiler no create pointers to all functions as normal operation? I understand this is the basic operation of a function call, the function is stored in global/static-data part of the binary and are then called to the working memory by pointer to that address. Making the function name into a pointer name seams very redundant. Because of this I do not understand why a function pointer would be used.

[@sivaramakrishnachitithoti1428]

Thank you roopesh!!

[@CppNuts]

Welcome dude..

[@abhimankonda7151]

could you please explain how compare function works with Array in qsort?

[@glennmarkabalos6657]

i have a question.. why does the compare function accept 2 const void *p.. what is this? and what were passed?

[@CppNuts]

+glenn mark abalos It is because void pointer is generic pointer, so for now we were passing integer but there could be situation where you will sort array of objects and in that case we will have to compare two objects on the basis of some parameter you will say that one object is small than the other one. So as you can see that we don't know what we will sort so that's reason we are sending everything in void pointer, because that is generic pointer and can accept anything. And we are using const because we don't want to modify the data in compare function. And if you're confused with how parameters are passed to compare function then it is the job of qsort function that's why we are passing our own function to qsort as parameter.

[@glennmarkabalos6657]

i see.. it's my first time seeing that concept.. thanks.. nice answer..

[@CppNuts]

+glenn mark abalos welcome dude.

[@glennmarkabalos6657]

another thing.. can you make a tutorial on how a function can return a two-dimensional array..

[@CppNuts]

glenn mark abalos, sure..

[@ramgupta4612]

Thanks a lot sir...

[@CppNuts]

Thanks man!!

[@mithunkumar-ke2om]

Really this video is very helpful ,thanks for uploading such type of nice video I have one request please upload one video on pointer to member function in c++ same as !

[@glennmarkabalos6657]

the qsort's last argument is a function.. how can a function have a function as an argument? can you make a tutorial about that?

[@CppNuts]

Hi i have covered that topic in same video here: 6:33

[@sasikumarreddyanipireddy]

Hello sir ...I want c program tutorials sir ..can u help me

[@CppNuts]

What video.

[@sasikumarreddyanipireddy]

@@CppNuts all pointer concepts based on real time

[@rtzstvn]

great vid! Use this knowledge and applying at work.

[@ashishgupta7849]

just like callback functions in JavaScript

[@CppNuts]

Correct

[@__hannibaalbarca__]

func(2)[0](3,6) will be exist

[@Palletooriabbai]

are you codebasics . your voice 98% matches with his voice

[@CppNuts]

No i am not CodeBasics. 😊

[@selvapriya4115]

null pointer ??????????

[@CppNuts]

??

[@selvapriya4115]

@@CppNuts : please give a class about null pointer

[@surya1harsha]

Nice Videos brother😊 one suggestion , please change your IDE background to white colour & font to black colour.

[@agitated_johnson]

okay?

[@CppNuts]

Yaa 😀 habit..