Difference Between Reference And Pointers In C++

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As the title say there is very big difference between reference and pointer in c++. So lets learn them and do comment if you have any question about the video.
#cpp #tutorial #interviewquestions #computerscience #softwareengineering

[@CppNuts]

Hi everyone, Don't forget to hit LIKE and SUBSCRIBE button for more videos like this!! And this will help me a-lot.

[@IshaqKhan-rk5bl]

i have seen many channels regarding c++ but your content is to the point and also that extra knowledge about things is amazing

[@CppNuts]

Thanks dude.. :)

[@jonathanmoore5619]

Great video.

[@CppNuts]

Thanks man..

[@subratkumarsahoo3633]

Reference can extend the lifetime of a temporary object. In C++ if you bind a const reference to a temporary object, the lifetime of that object becomes the lifetime of the reference.

[@kushgh]

I absolutely love your videos Cpp Nuts. If it weren't for you guys, I would have never learned MultiThreading so fast. I just wanted to point out that at 07:00 - You mention that r++ is impossible and (&r)++ is possible, whereas its the opposite. You will get the following error at (&r)++ -> error: increment of read-only location ‘& r’ Whereas r++ will just increment i by 1, so i and r will become 11. Love your content. And a major salute to Team CppNuts.

[@fatihersoy7559]

Best cpp lecturer on KZbin.

[@CppNuts]

Thanks man..

[@somanathnayak4279]

Hi, Thanks a lot for your noble effort of adding cpp videos. I have a question. Please let me know when to use only pointer and when to use only reference while writing a program. What is the real life usage of reference over pointer? If reference and pointer both are present in C++ means there should be some situations where only reference is useful and some places where only pointer is useful. Thanks in advance.

[@prishaphotography9063]

Sir,you covered more than expected content.might be you are the only one

[@CppNuts]

+Ankit Makadia thanks man.. :)

[@seriouss9077]

Also we cannot increment and decrement value of refrence as mention in video

[@kartikpodugu]

Can you elaborate what is the use of creating a reference to a reference ?

[@seriouss9077]

1:29 4:43 5:31

[@georgeabraham7256]

&: you can make a copy or pass a reference, you need to have an independent copy(y = x) that will change from the original or you need to modify the same source value somewhere else(&y = x). *: you need to index something, even the CPU indexes it's instruction code and registers incrementors through your program with the same feature gained from a pointer.. anything can be indexed... the heap is only accessible by registers tracking your stuff on the heap by address values stored in the stack by hard design.. you can't get past the extra *dereference to gain access to the stuff you have out there. stack: a memory address containing a value, heap: a memory address containing a memory address that containing a value/structure/etc.

[@nithyanarayan8080]

Nice video. Having a doubt in indirection: Can we consider this as multiple indirection? int i=1; int &r=i; int &j=r; int &e=j; int &m=e; cout

[@BiranchiNarayanNayak]

Excellent Explanation, love it

[@CppNuts]

Thanks

[@cos1paY]

Very helpful. thx

[@CppNuts]

glad it helped.

[@srinivas2808]

plz make a video of difference b/w function overloading and overriding ......

[@CppNuts]

+Srinivas KL, here is that video, what you asked for kzbin.info/www/bejne/eZW5oZWge8qnepo

[@srinivas2808]

Thank you .....

[@CppNuts]

+Srinivas KL you are most welcome :)

[@JacobMartin-l1f]

I do not see how someone deem this a good and precise explanation. Thanks for removing dislike, KZbin broncos.

[@CppNuts]

I appreciate that!

[@spicytuna08]

hold on. if p is a pointer to an int. int *p; int i = 10 p=i; *p is 10. p is the address of i.&p is the adress of p. is this correct?

[@CppNuts]

Yes correct but assume mean to say p=&i; in your comment then everything you wrote is valid.

[@esmaeil9478]

Thank you!

[@adityaghaywat3648]

@3:25 why it is different?

[@lidavid7809]

really clear, thank u sir!

[@CppNuts]

Glad it helped!

[@MrDhawal29]

Your Regular follower now..:D Prepare a video on Red Black tree in DS.. And yeah keep it up !!

[@CppNuts]

Hi Dhawal Arora, Let the data structures & algorithms turn come. :D I am trying my best to reach that list ASAP, and thanks for following my videos dude.

[@MrDhawal29]

No worries dude,Keep it up..we are with you !!

[@CppNuts]

+Dhawal Arora, thanks dude..

[@सत्यमेवजयते-स7प]

I think you missed 1 poimt which that we cannot have array of references but with pointers it is possible

[@CppNuts]

Oh.. great.. Thanks for pointing this out. I should pin this comment so that few people would get benefited from this comment.

[@Ady2xp]

Awesome video! Thank you for it!

[@CppNuts]

Ady2xp, thank you so much.

[@sathviktumoju1195]

good work

[@CppNuts]

Thank you! Cheers!

[@kroax9720]

Nice content , but mate switched accents in between the video !

[@kinjalshah2796]

How members are accessed through reference?

[@akshaykulkarni1301]

Thanks

[@CppNuts]

Welcome

[@rakhilsoman9299]

at 6:58 You say (&r)++;. This is an error, right?

[@pardeepbhatt9048]

right

[@spicytuna08]

hold on. reference variable must occupy a space somewhere. i get it that it is an alias. but there must be a space for alias.

[@sakuranooka]

Ok, I can see all these differences. But what is actually the purposes of references? Why did people decide to introduce them? To me references look like synonyms for variable names, so I can use "r" instead of "i", but what's the point? Why SHOULD I use "r" rather than "i"?

[@reassume4826]

Suppose u want to have another variable with the same value...so to keep the other variable update and also reuse the memory of previous variable..we just store references.

[@LazyTechNo]

u said reassignment is not possible with reference. then u put r = var and accepted that how its possible then ? i didn't get this point watching 2 times. please explain

[@CppNuts]

I would have said that once reference is pointing to something, then we can not change it to refer something else. And when you are creating reference that time only you have to initialize to which it should refer. And then it will not change what it is referring to. And you can not just create reference variable without making it refer something.

[@LazyTechNo]

i am also saying that &r = i; which is pointing to something. then how u changed r = var; ?

[@CppNuts]

Actually you are not changing the reference, you are changing the value at i with var.

[@zc4060]

int a = 10; int *p = &a; p and a should have the same address. I tried it on my computer.

[@CppNuts]

p is holding the address of a, but p will have its own address, then only p can store the address of a right?? if(p == &a) is true

[@spaceinvader8892]

Nice, but I would write Address Arithmetic Operations for 4th.

[@bluehornet6752]

You talk WAY too fast in the beginning of your videos. It's virtually impossible to understand what you're actually saying. Otherwise, it was a nice video and a good review of references compared to pointers in C++. I might have made use of *nullptr* instead of NULL for initializing the pointer, but that's not a huge deal. It's just the new C++.

[@CppNuts]

Tom B, i will work on my speed, thanks man.. :)

[@Vickyrd7936]

All your viideos are awesome. Only thing hurts to (my) ears are your fake accent.

[@CppNuts]

😂

[@HosseinAmirshaghaghi]

That is not a good explanation.

[@CppNuts]

What happened?