C++ Tutorial 3 : Pointers & Functions

Cheat Sheet / Transcript : goo.gl/nWDKfo
Best C++ Book : amzn.to/2FKTOpc
/ derekbanas
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As we continue to learn C++ through problem solving we cover Functions, Pointers, Local Variables, how to create a range function and solve a bunch of problems.
I hope you find using pointers to be a breeze after this tutorial. Please share your alternative problem solutions.

[@derekbanas]

KZbin notified me that they will no longer send notifications, when I make a new video, unless subscribers click the Bell button. I hope everyone is finding the new C++ tutorial useful. Arduino programming will start soon.

[@derekbanas]

Thank you :) I'll see what I can do

[@redvenom9304]

Derek Banas Thank you, Derek, for this C++ tutorial! Can you please include data structures?

[@tacca4720]

Yes, enjoying them greatly; been a long time since I did any c / c++... now my kids are asking questions, I am discovering how much I have forgotten :/

[@sirturnables]

Please, do I need to know electronics to follow your Arduino tutorials?

[@santhoshs4891]

printf is not declared in the scope help

[@bajatg]

30:55 std::vector Range(int sVal, int eVal, int iVal) { std::vector range; for (int i = sVal; i < eVal; i += iVal) range.push_back(i); return range; }

[@Evildragonfirez]

This series should end up in the library of congress. Your videos, are incredible, I am eternally grateful.

[@derekbanas]

Thank you for the nice compliment :)

[@ryantripi6647]

Another great video, especially since pointers have always been my weak point (stayed home sick on the day we covered them in class). The first problem I got a bit of a different solution as I pass my vector in by reference to be altered in the function, but I really liked your way in how you just used the function in the assignment of the vector, thus ridding the need to pass it in at all.

[@derekbanas]

Thank you :) I'm very happy you found it useful

[@edgarhakobyan8429]

I just want to thank you for making such informative videos. I love the fast paced environment. I learned some of the concepts from school but didnt understand alot of the things. And unlike other youtube videos that go over the stuff very slowly and make it boring, your videos are fast paced and good for those who know a little bit of C++ but need refreshment. From the first 3 tutorials i learned more in 2 hours than in 3 weeks in school. Thank you

[@derekbanas]

Thank you for taking the time to say I helped :) I appreciate that! I wish you all the best

[@Awesomekid2283]

When you define a function prototype, you don't need to give parameters names. You only need to specify the return type, the name, and the types of the parameters. You can turn double addNumbers(double num1, double num2); into double addNumbers(double, double);. You also don't need to declare if variables are constant here either; you only have to declare constants when you are actually defining the function. The compiler actually discards your variable names in your function prototypes as you can rename your variables something else in your actual function definition. You can only use the names from the prototype if you also call them that in your definition. I'm sure Derek knows this, but this is more for everyone else learning C++! Less typing for everyone!

[@derekbanas]

Yes I know. I just find the code easier to read when I use the names in the prototypes

[@victormponcec]

std::vector range (int start, int max, int inc){ std::vector vector; for (;start < max; start += inc){ vector.push_back (start); } return vector; }

[@victormponcec]

//*start

[@akshaytati]

Summer holidays are coming in 5 days Gonna complete blender, C# and C++ tutorial series of yours! Keep up the good work!

[@derekbanas]

Thank you :) I hope you enjoy them

[@jihedjaouabi7623]

OMG, I swear I was just watching your 1H C++ Tut, at minute 43, when you talked about pointers, I was like "errgh this is not so well explained..".. And then this notification showed up!! :O

[@derekbanas]

Awesome I'm glad I did a better job the second time :)

[@revenevan11]

Thank you so much for this tutorial! Because I was fondly remembering a similar function built in to MATLAB, I wrote my Range function to work with doubles so it could do more than just integers. Here it is: vector Range(double dSV, double dEV, double dInc) { vector dvRet; for (double c = dSV; c

[@derekbanas]

I'm happy you liked it :) Thank you for sharing

[@FritsvanDoorn]

Nothing to add. You give me something to think about and I got a lot of ideas to work out. Thank you !!

[@derekbanas]

Thank you :) I'm glad it was interesting

[@akshayelangovan7764]

I’m 26 years old and finally understood how to use pointers. Life milestone

[@entiretwix1480]

I just did std::vector Range(int init, int max, int incriment) { std::vector temp( ((max - init)/incriment)+1) ; for (int i = 0; i < temp.size(); ++i) { temp[i] = init + (incriment*i); } return temp; } instead of a while loop why not use a for-loop as they are meant for incrementing, I'm actually curious if there is a reason.

[@ledzeppeman]

Hey Derek, long time fan. These videos are awesome. They really help me learn at a faster pace. I'd like to offer a super tiny suggestion. I listen to your videos on open-back headphones, so the sound stage is particularly pronounced, and it sounds like you're sitting off to my right. Now I really appreciate stereo sound, but the uneven balance is a bit dissociating. Perhaps this wouldn't be the case if you turned your microphone so that it symmetrically faces you while you record. A side note, at first, I wasn't totally sure, but I ripped the audio from this video and looked at it in a music editing software. The right channel is without a doubt louder.

[@derekbanas]

Sorry about that and thank you for telling me it is distracting. I'm going to look into if I can find a floating mount for my mic. It is to the side because it blocks my view of the screen when I record.

[@fortifiedconcept4260]

You are the best.I have download most of your tutorials and i am waiting for more everyday!!!Thank you very much!

[@derekbanas]

Thank you :) Many more are coming

[@brodoswaggins5387]

These are excellent explanations. thanks so much!

[@hitarthpanchal1479]

1. How to intitialize vector with all zeros or ones? 2. If I initialize vector(10), then enter values using push_back, will this work and if yes at which index the value will be stored?

[@monolinepl-monocykl8180]

Hi everyone. I am wondering is there any difference between that from video: void DoubleArray(int* arr, int size) { for(int i=0;i

[@calebjohnstone4856]

There is no difference. The 2 forms of referring to the i-th element in an array will both work. i.e. arr[i] will get the same result as using *(arr+i) Therefore it follows that arr[i] *= 2 and *(arr+i) *= 2 will both do the same task. This is probably the logic you used when asking this question.

[@bidaarle]

#include #include std::vector range(int min, int max); int main(){ std::vectormyrange = range(1,10); for(int y : myrange) std::cout

[@TravelingMooseMedia]

I absolutely love this series

[@derekbanas]

Thank you :)

[@peacelover2517]

Just saw the notification and I am here.. Thank you, Derek. :)

[@derekbanas]

Yeah, I'm glad the bell is working and thank you for clicking it :)

[@jcq2505]

YUPPP : "DEREK BANAS uploaded...DEREK BANAS uploaded...DEREK.BANAS uploaded"

[@derekbanas]

I'm happy you are enjoying the videos :)

[@jcq2505]

Derek Banas we are happy you paint our world

[@vivekpanchagnula815]

I thought that you meant simple interest in the last bit and was thoroughly confused as to why I'd use the range function for that.

[@xavierlesperance6156]

Id like to start by saying the videos are great thanks you very much for making them! I had a question at around 12:30 you have the user input two numbers, I decided to just change your code up a little to see how it would work and came up with this user input method: std::cout dbNum2; ^ this works without a hitch v this does not for some reason: std::cout > dbNum1; std::cout

[@vegansynths7757]

the latter part was tough to grasp. Gonna keep working at it. One thing I noted; when going back to an address previously called, only the last 3 digits are the same address. Why are the other numbers changed? does the address change? confused me.

[@up4life108]

Do you have a job besides youtube or are you doing youtube fulltime? Your tutorials seem to be extremly well prepared.

[@derekbanas]

Thank you very much :) Yes I run online stores, make mobile apps and other security stuff. I'm a pretty lucky guy

[@up4life108]

Nice! Hopefully im going to be where you are in life at some point!

[@derekbanas]

Keep at it and you will. I have had some terrible lows. I suffered from some serious health issues and things got bad. At one point in my life I was living in the ghetto and surviving on just rice and beans. I took what was considered to be a terrible job, but because I hustled a higher up noticed me and promoted me. You never know who may be watching. That got me back on my feet. I had a bunch of other lows after that, but at some point I realized I needed to start my own business to be happy. Thankfully my Wife was willing to put up with some struggles for about 3 years, but then everything fell into place because of a combination of hard work and luck. The only people that fail are those that give up :)

[@up4life108]

Really interressting to get some background to the person making theese videos ! Imma keep trying

[@derekbanas]

We all have bad times in life. I learned more from them then any good times for sure. I'm happy that they occurred and that I made it through.

[@Imp0ssibleBG]

Why and when do we need/ have to use pointers? I really understand how they work but cannot see their practical use. EDIT 1: Is it like faster when we directly change the value of an address rather than changing the actual variable's value Your tutorials are awesome!

[@derekbanas]

Thank you :) Pointers were originally useful because they allowed for the creation of arrays and strings. You could allocate memory blocks large enough for both. They can also be used to take and return memory which allows your programs to run on much less memory and avoid creating duplicate data.

[@Imp0ssibleBG]

Derek Banas Thank you! So for example instead of passing a object which contains a lot of data, we will just point to it with a pointer?

[@derekbanas]

Exactly, that saves from making duplicate data in memory

[@BlackMambo5]

Data Structures primarily rely on pointers. Basically you can't create a Linked List or a BST or a HashTable, etc. if you can't have pointers or don't know how to use them. As for your remark of passing an 'object', you can simply use pass-by-reference instead of passing a pointer to said object. Use-cases like dynamic memory allocation is where pointers are needed. But always make sure anything you create(dynamically allocate memory for) in the heap is deleted/freed once its use is done, otherwise you have memory leaks galore.

[@kori4386]

when i programmed C in univercity they told me to use pointers because they are allot faster. because you only have to change the meonry address not the variable

[@2271masoud]

Thanks for the tutorial Derek

[@derekbanas]

It was my pleasure to make it :)

[@Awesomekid2283]

I think the conventions with functions is that the first word is not capitalized and you capitalize all of the words of the names of things like unions, structs, classes, etc.: the more "structure" style things. This was how I was taught; am I wrong in this assumption?

[@derekbanas]

It doesn't really matter. I capitalize functions to make them stand out from variables, but there is no definitive right or wrong way of doing these things IMO

[@oneinabillion654]

Hi sir, im a beginner in C++ and have knowledge on C. Regarding this line: for(auto y:myVec) std::cout

[@extazzyyes7672]

Great series thus far. Hopefully it'll be enough to prepare me for a module in C++ at uni after the summer holidays :).

[@derekbanas]

Thank you :) I plan on covering way more then is covered in most C++ courses

[@extazzyyes7672]

That's even better :). And I see you weren't bluffing when you said you read all the comments hah. :p

[@zakariarizvi8003]

Hi Derek, You're too good man. Just wanted to ask when is your arduino tutorial coming. Thanks.

[@derekbanas]

Thank you very much :) I'll start making Arduino tutorials with the C++ tutorials right around the time in which I've covered the core C++ language. Very soon

[@SuperJonalicious]

Derek, it would be super awesome if you did an Elastic Search tutorial

[@derekbanas]

Sorry I don't have a subscription

[@lldazzlingdoodlesll6376]

Hey Derek! while returning the vector for the range function, we are returning by value, right? Can we pass a pointer to a vector to the Range function and have the function populate the vector that we passed it?

[@r72rock]

Heads up to those of you who are using VS Code on windows, and you're trying to use CodeRunner -- You'll get an error if you compile the first bit of code that Derek runs. iota(), begin(), and end() are a part of C++11, so you have to configure code runner to use C++11. Just go to your VS Code settings (File -> Preferences -> Settings) and add this to your settings: "code-runner.executorMap": { "cpp": "cd $dir && g++ -std=c++11 $fileName -o $fileNameWithoutExt && $dir$fileNameWithoutExt" }

[@publicstaticvoid3224]

Thanks for making this Derek!

[@derekbanas]

It is my pleasure to help :)

[@MrLulu2671]

Thank you so much for the great tutorial. I learnt all my JAVA code from you. I sacked in astray not understanding the code you explained, but i found that your videos reallyy gave me some foundation knowledge and practical coding which makes it easier to relavant topics i am going to learn, love that fast pace you brought to the tutorial and better than most JAVA tutorial in HINDI i think. However, I found that i can't run your cheat sheet on the JAVA tutorial 38 talking about the JDBC swing GUI. Could you please spend a few minutes and review the code? Thank you so much Man!! Love that quick pace style, looking forward for the next video.

[@ravishankarsatheesh1901]

Your videos are awesome. This one helped a lot Thanks

[@derekbanas]

Thank you very much :)

[@matsn0w]

You rock mate!

[@derekbanas]

Thank you very much :) I try to do my best

[@MrManojKumarPrasad]

Hey Derek, I'm currently reading "C++ Primer" so I wanted to ask should I read the book in your description or continue reading the one I'm reading?

[@derekbanas]

C++ Primer is also very good. Stick with it if you like it

[@aymanbelhaj2853]

thanks a lot for the tutorial can you point to the video you mentioned in 18:44 about hexadecimal

[@nokap2695]

very helpful video!

[@derekbanas]

Thank you :) I'm happy you enjoyed it

[@richmancatabona2345]

Im confused. Why the value of the memory adress is 6octets long? (0x7fff5f692a48). I thought size of adress matches the system architecture. E.g.If 32bit program, memory size is 32 bit long. But there is no 24bit architecture afaik. Please help me clarify this sir. TY in advance.

[@leoniaklebanov2502]

Excellent video, thank you!!!!!

[@derekbanas]

Thank you :)

[@leoniaklebanov2502]

Derek Banas I use you tutorial for return to hi tech; and it contribute me undefined value; also I learned English watched you video tutorials and don’t feel panic when I watch any video on KZbin; thank you so math!!!!!

[@HalValla01]

Why do you use " " in stead of endl?

[@byteaesx1373]

The book you suggest about C++ is better than the Professional C++ from (Wrox)? Many thanks for the series. I pretty sure you'll be a reference in years to come. Waiting for the C# long course with examples...

[@derekbanas]

Thank you very much :) Here is my C# course kzbin.info/www/bejne/ZqGTe398j89leZo

[@byteaesx1373]

Respect.

[@sandeepvk]

Thanks Derek.The C++ paradigm seems hard compared to Javascript / Python. Could you please me why do we need Arduino ?

[@derekbanas]

You'll get it with a little practice. I wanted to also cover Arduino because a version of C++ is used to program Arduinos. It provides a great way to get directly to low level hardware programming. I also like Arduino because I would have never been able to become a consultant without.

[@buffaloSoldier519]

Could you show us how to actually program the micro controller using its schematics and Visual Studios rather their own software?

[@derekbanas]

I'm going to program Arduino with Visual Studio Code

[@channelnumber52]

Arduino is how I got my start programming. I think it's cool because you get to make something tangible with your code. It's easier to have arduino read a sensor, and blink a light, than it is to get a desktop application with a GUI going. The arduino was very encouraging for me.

[@sirturnables]

B.E.A.utiful!!!!!!!

[@Awesomekid2283]

Is there a reason why you used std::begin() and std::end() to make iterator objects out of the vector instead of just doing myVec.begin() or myVec.end()? I finished a data structures class last semester which was taught in C++ and I am going through these videos to learn more about C++ that I didn't know, and we always used object.begin() or object.end() to get an iterator object. I didn't even know that std::begin() and std::end() existed, so what exactly is the difference between these functions and object.begin() or object.end()? Is there a reason to use one over the other; do they do different things?

[@derekbanas]

Both operate in the same ways. In my tutorials I like to show things being done in numerous ways, so that when you see them in other peoples code it will be understandable

[@caddydz]

Hey Derek I'm in my 3 and a half years of self learning phase Do you recommend or go against learning multiple languages?

[@derekbanas]

I think it is best to learn 1 core language very well. After that you'll more then likely have to learn others. Every single day I use JavaScript, PHP, C#, and SQL. A few times a week I use Java, C++ and Python. I am however a consultant, so I don't work on just 1 project in a team.

[@caddydz]

Got it, thanks you so much I just want to build a cross platform service where I have PHP on the backend So am learning other languages to create some sort of native client apps that consumes the backend

[@vyasramankulangara8804]

Please do data structures and algorithm in C++

[@derekbanas]

Those videos are coming

[@vyasramankulangara8804]

Thank you

[@sulaymontajudeen8030]

Hi Darek, thanks very much for awesome contents, please I need a little help, I tried running the same code for AddNumbers function on VS code after following your set up instructions but it told me that "Cannot edit in read-only editor " please how do I solve that. Thanks in advance.

[@hou3455]

I find a little bit superficial and confusing to use a vector instead of a loop to loop from 1 to 10. :-) :-) :-) But I understand why it was asked to make usage of the vector in the contect of the exercise.

[@derekbanas]

Sorry about that. I was looking to demonstrate an interesting example

[@bananacraft69]

step size is irrelevant std::vector range(int a, int b) { std::vector vRange; for (int i = a; i < b; i++){ vRange.push_back(i); } return vRange; } Also, for convenience: void print(std::string msg = "", std::string end = " ") { std::cout

[@sriramiyer9840]

Why does getline() work without std:: in your code but gives error on my system. I'm using gnu gcc compiler

[@pjetr0boy338]

Hi Derek, you made very good C++ courses. I don´t speak English very good. Please, can you add subtitles? I'm using automatic translation to my language. Thank you so much. Sorry for my english :)

[@lliliiliillliliiliili5180]

Gonna watch this as soon as I get home

[@derekbanas]

I hope you enjoy it :)

[@meiz1795]

In the last problem, why did you use Range function if that task could be done on many different, and easier, ways?

[@derekbanas]

I like to explore numerous ways of doing things

[@stuartlightfoot1729]

It's almost perfect; lacking subtitles. Subtitles would make this amazing for different audiences.

[@AshokKumar-bi1jp]

Hi Derek please do a tutorial seriea on C programming and data structures

[@derekbanas]

I'll see what I can do

[@yssacnton95]

Really cool!

[@derekbanas]

Thank you :)

[@brandtize]

great video.

[@derekbanas]

Thank you :)

[@Sejiko]

Hey can you make a video about getting some other libraries to Netbeans and Cpp such as (Cinder, SDL, OpenGl ...) so we can do something with Graphics?

[@derekbanas]

I'll cover that soon

[@hansrajrami]

Hello, please cover algorithm using c++ as well With different algorithm techniques like greedy algorithm, branch and bound algorithms, devide and conquer algorithm,dynamic algorithm Please please..

[@derekbanas]

I'll be covering those soon

[@alexanderbrown1178]

Great video Derek! Really enjoying this playlist. I'm confused though: I get linting and compile errors if I don't use the reference operator to assign age to pAge, yet when I pass arr into DoubleArray I don't need the reference operator. Why?

[@alexanderbrown1178]

Interesting... seems to be something to do with the fact it's an array. If I store age as an int array I have to remove the reference operator...

[@alexanderbrown1178]

Just realised I totally missed the bit where you said you don't need to use the reference operator with arrays! Are there any other data types where the reference operator isn't needed? Vectors, maybe?

[@derekbanas]

Sorry I didn't explain that better. Passing a vector reference to a function works like this void SomeFunc(vector &vect) { Do stuff with vector } int main(){ vector vect; SomeFunc(vect); }

[@user-cw3nb8rc9e]

1:51 Wasn't it better to declare the "i" as size_t instead of int? that vector size returns size_t type value

[@ammaralomary7274]

Your final problem is rather confusing. The Range function here does not really do anything since you don't use the variable y at all in your interest calculation. you might as well have used a normal for loop in this particular case.

[@darkchocolate3390]

5:55 *gulp*

[@davidpereira5303]

I'm running C++ on Eclipse. I'm having problems with "iota", I have an error message saying "it could not be resolved". Any suggestions? Thank you

[@derekbanas]

www.eclipse.org/forums/index.php/t/636348/

[@davidpereira5303]

Thank you ! Looking forward for the next videos, started learning C# with you, and now C++ . Very very helpful tutorials

[@LadolMark]

good

[@spooky_zen]

great tutorial i final realized what set notation is lol

[@derekbanas]

Thank you :) I'm glad it helped

[@Typrograms2]

Uh... I'm confused. I have the following code: (4:54 time reference - self attempt #1) for(auto y : myVec) std::cout

[@derekbanas]

I see the problem. y is assigned the next value in the vector. y isn't the index address like it is in a standard for loop. replace myVec[y] with just y and it should work.

[@Typrograms2]

I.. I just have no clue. I (maybe as you've noticed) keep replying and deleting my comments because I think I have the solution but then it just doesn't make sense. I've had issues beyond me. The JavaScript conversion test had similar results, but not exact. I know 'y' definitely was not the problem as I used std::cout to print out the value of 'y' and it was always the correct index number. myVec[y] had some RANDOM results, even though the values were fine. 'void countandlog(std::vector vec)'

[@Roblbaxx]

Thx

[@derekbanas]

Happy to help :)

[@Roblbaxx]

You are the best

[@adri2350]

It's better to initialize pointer with nullptr value because NULL is a #define NULL 0

[@johnsilver5783]

Derek, cover OpenGL please

[@derekbanas]

I'll see what I can do

[@johnsilver5783]

I need it!

[@Adam-cn5ib]

27:31. Here is my take on the problem, i haven't watched the solution at the time of writing this. Ignore all the includes. Can anyone give opinion? #include #include #include #include #include #include #include using namespace std; int incrementFunc(int startingValue, int endingValue, int incrementAmount); int main() { incrementFunc(0,100,12); } int incrementFunc(int startingValue, int endingValue, int incrementAmount) { vector arr(endingValue/incrementAmount); for(int i = startingValue; i < arr.size() + 1; ++i) { arr[i] = incrementAmount * i; cout

[@derekbanas]

Thank you for sharing :)

[@felixkimutai8478]

What's iota ? I am using Microsoft visual studio ide but it's not working. I have also tried with codeblocks but I still get error "identifier "iota" is not defined "

[@felixkimutai8478]

got it, thanks

[@trinitygod863]

Im using VS too and getting the same error how did you fix it?

[@kijiyakiace3616]

#include

[@ttdMrGrin]

Hello, Im using Visual Studio. When printing out a memory adress I get something like this > 008FF75C, (8 signs) instead of a hexdecimal number. I cant figure out why ... ( In Netbeans i get something like this > 0x61ff18, looks more like it but still a very short number (8 signs)). Anyone who knows whats going on?=)

[@ttdMrGrin]

@Peterolen cheers, though it baffels me that Visual Studio never show it with 0x while both CodeBlocks and NetBeans both print out 0x (is it so that Visual Studio have a different standard for showing hex numbers?) 00 instead of 0x and if so, why?=)

[@ttdMrGrin]

​@Peterolen Thanks again for the explenation, I really appreciate it, Im all new into this and really disslike not knowing the why =)

[@lowochi]

Hi Derek! When I tried to type in: std::iota(std::begin(myVec), std::end(myVec), 0); I got an error, it says it expects 3 arguments and only 2 are provided. I'm programming in Visual Studio and included the following: #include #include #include #include #include #include Do you know what caused the error?

[@derekbanas]

That's strange. Maybe the newline is causing that, but it shouldn't

[@jasonchvat1071]

Maybe try myVec.begin(), myVec.end(),0

[@vegardpig8634]

Is there a language you can’t write in?

[@nuclearnyanboi]

I have a test tomorrow :D

[@zkfdsldfjsdjfl1]

how come you are not using namespace std is it just a preference thing

[@derekbanas]

It can cause conflicts so I never use it. For a short silly program it is fine to use though

[@zkfdsldfjsdjfl1]

what kind of problem

[@devilmanscott]

As your program grows and you increase the number of namespaces, also bringing in third party packages increases the chance of conflicts happening, so it's far better not to use it, also every decent C++ programmer will tell you not to use it as it goes against best practices. The rule it pretty strong across all languages, don't ever pollute the global namespace.

[@sirturnables]

Derek, I think your compound interest program is faulty. 1000 investment at the rate of 8% should give 1800 after 10 years. Mine was right though!!!

[@derekbanas]

Sorry if I made a mistake

[@sirturnables]

Sorry, I realized I was the one that didn't understand how compounding works. Yours is correct. What I was doing was calculate 8% on the initial investment and adding it 10 times to the investment. However, every year 8% has to be recalculated on the new investment, just like you did. I calculated the yearly earning outside the loop instead of inside.

[@kressckerl]

Are you from Texas?😄

[@derekbanas]

Pennsylvania

[@kressckerl]

@@derekbanas ah okay great tutorial😁

[@No_handle-_-]

Not NULL it should be nullptr for initialization of pointers

[@Tiara48z]

Does any one know how to fix: cannot open source file “iostream”, in VS Code. Thank you

[@derekbanas]

Check the solutions in the 2nd answer here stackoverflow.com/questions/11713842/visual-c-cant-open-include-file-iostream

[@Tiara48z]

Derek Banas thank you so much.

[@rameshkumatagi8098]

using range function for compound interest problem looks silly. Loop variable y was never used in calculation.

[@drfpslegend4149]

what is iota? 1:23 and no explanation.

[@derekbanas]

With std::iota(std::begin(myVec), std::end(myVec), 0) we are saying we want to take the vector myVec and starting at the beginning of myVec we want to place a 0 and then place incrementing values in every other index until will reach the end of the vector

[@techwithjordan]

I’m going to be a pointer for Halloween

[@derekbanas]

That's funny :D

[@Shpendulum]

printf() is ten times more eye pleasing for me compared to that cout abomination.

[@derekbanas]

I use both regularly

[@CrazyBrotherTime]

But what's the point of them though? :)

[@derekbanas]

Point of what?

[@__thytran]

Thanks a lot but I can't use std::iota C:\Users\augus\Documents\Cpp\practice\main.cpp|32|error: 'iota' is not a member of 'std'|

[@cawley345]

man I have to write a program to solve a heat transfer problem and have no idea what to do

[@changeluhia]

problems not easy. I'm worried. haha

[@derekbanas]

Keep at it and it will eventually make sense

[@Alphabet_-_]

[@sergioavila2720]

i just use the terminal in Linux

[@derekbanas]

That's fine

[@nadrogiranihibiskus5186]

what about this level of knowledge? will you cover all of that?:D /watch?v=JPlAqPb4izs

[@derekbanas]

I'll explain C++ so that you'll be able to understand that code yes

[@nadrogiranihibiskus5186]

guy in that video says its simple code... is this something a 1 year of c++ programmer can do?

[@derekbanas]

Yes definitely. C++ can look complex if you don't know what the jargon terms mean. It is pretty easy to pick up with a little practice