Buckys C++ Programming Tutorials - 22 - for Loops

[@alexanderleeart]

I am always amazed by how simple you make this stuff sound, while professors make it sound technical and mysterious.

[@sassy098]

they be doing that on purpose fr and how has your life been

[@Wacharis]

11 years later and the next generation of programmers are still watching this. Thank you Bucky, we appreciate you.

[@visit-vo8hx]

Same here

[@sith4life]

@Programmer142 for is a loop used when you know how many times the loop will run whereas the while loop can run unlimited times kind of... the difference is x=0; while ( x < = 5) { do stuff here; x++} and for(x = 0; x

[@forevatrolling]

im surprised how quickly i am learning c++ after learning java from your tutorials. got through 22 tutorials in a day and understand all of it!

[@5H33PDAW6]

read so many books so far and literally cant believe how easy it is with these videos. i wish you had the new setup when you made them, even though it doesnt really matter. Top notch man, i cant tell you how much i appreciate these.

[@archavez100]

Bucky should give us homework.

[@riteshyeddu]

I agree

[@noxtril]

Thank you so much they are so helpful i tried to do an online collage class but everything was left just kind of this is what it is go and figure out how to use it. it is so much easier just listening to you walk us through

[@The_Muznick]

Didnt even need the material presented in the video, just listening to this helped me to figure out the problems I was having with my current lab. This set of videos has made what would be a rather confusing class very easy...

[@luckmetube]

"What's going on guys Its Bucky? " love this quote :) easy and simple explanation, thank you Bucky!!

[@jillanifazal3341]

I highly appreciate your work here, even though I am in my late 30s and it was told that it will be super hard if I go for coding now as I will not be able to grasp it but your way of teaching is simple, elegant and fun. It is a best way to develop this skill for a slow learner like me. Kudos and may Allah bless you!!!

[@joshuamolina2653]

Your videos are so helpful and to the point! thank you for doing this I appreciate it!

[@MathandScienceNXT]

I made a calculator with c++ as my first program :) thanks Bucky

[@dex7380]

Are you still coding? Im so curious how are you now about coding :D

[@Siterus]

3 years have passed i wonder how good you are by now xD

[@vigneshas7426]

+The Flash Code Barry Code.

[@maweebster8492]

how good are you now?

[@sumanthkomaragiri3488]

Are you still coding ?

[@Qazqi]

It can be any expression that results in a value convertible to bool. Your 4

[@jaydinangelica6722]

Thank you for these Bucky, they really do help in my class.

[@heartking101]

u are good enough thanks Bucky. i am really appreciated for u have done .. all the best in ur life ..

[@SergeantBalthazar]

Yeah, I'm 15 and have actually had programming knowledge for about a year. Programming is actually very easy to learn if you have an open mind. :)

[@MrCanadianAviator]

I am 14 my self and I agree with you. Everything he has taught me I understood extremely fast.

[@TheMasterARK]

You are literally a blessing for making these videos. Really wish I had seen these at the beginning of my semester lol

[@BradenBest]

I call them the initialization, test, and post sections. Because while you can (and typically will) control a for loop with an iterator, that's not always the case. For example: char array[9999], *ap = array, c; for(read(0, ap, 9999); c = *ap; ap++) will give you a char array populated by stdin where for each iteration, you get a single char from said array (what you do with c in the body of the loop is up to you). There's also the comma operator, which lets you do things like this: for(int i = 0, j = strlen(string) - 1; i != j; i++, j--) which would loop from both ends to the middle of a string. And then there's codegolf, where the objective is to solve a problem with the shortest amount of code possible. For example... main(c,r,t){for(scanf("%d",&t),r=5527;scanf("%d",&c),t--;abs(c)^abs(r)?abs(c)r&&(r=c));printf("%i ",r^5527?r:0);} That whole thing is a program in which 90% of the code consists of a giant for loop (and conversely, the for loop doesn't even have a body; it's all happening in the header). The program takes an array of temperatures (in the format "length n1 n2 n3 ... nlength") from stdin, and outputs the temperature with the lowest absolute value (or in the case of two numbers that are "polar opposites", the positive) So `echo -ne "5 5 4 -2 15 7" | ./a.out` would print out "-2"

[@BradenBest]

dex 1 That's because it IS C, genius. I wrote it for a code golf competition where the program's stdin is pre-filled with text and your job is to parse it and output the correct temperature. And I never said it was C++. This is a programming discussion and is not limited to C++ just because the video targets C++. Get your narrow-minded object oriented rhetoric out of here. C++ is a horrible language and I don't endorse it. Also, work on your insults. When I criticize code, I provide reasons for why it is shitty. The reasons give my criticism credibility rather than leaving it up to the reader to figure out what I think is shitty about it. In the words of Linus Torvalds, * YOU * are full of bullshit. Continuing... C++ is like KZbin, It's old, with a ton of crap in it that makes it convoluted as hell, and they keep adding crap to it in an attempt to cover up the old wrinkles with makeup. But in the end, you still have an old wrinkly hag. Don't believe me about C++ being convoluted? How do you explain the illogical decision to overload

[@BradenBest]

dex 1 "that's nice considering nobody has ever stated that C++ is trash or that 'experienced' c programmers refuse to use C++." Oh really? "C++ is a horrible language. It's made more horrible by the fact that a lot of substandard programmers use it, to the point where it's much much easier to generate total and utter crap with it. Quite frankly, even if the choice of C were to do *nothing* but keep the C++ programmers out, that in itself would be a huge reason to use C. In other words: the choice of C is the only sane choice. I know Miles Bader jokingly said "to piss you off", but it's actually true. I've come to the conclusion that any programmer that would prefer the project to be in C++ over C is likely a programmer that I really *would* prefer to piss off, so that he doesn't come and screw up any project I'm involved with. C++ leads to really really bad design choices. You invariably start using the "nice" library features of the language like STL and Boost and other total and utter crap, that may "help" you program, but causes: - infinite amounts of pain when they don't work (and anybody who tells me that STL and especially Boost are stable and portable is just so full of BS that it's not even funny) - inefficient abstracted programming models where two years down the road you notice that some abstraction wasn't very efficient, but now all your code depends on all the nice object models around it, and you cannot fix it without rewriting your app. In other words, the only way to do good, efficient, and system-level and portable C++ ends up to limit yourself to all the things that are basically available in C. And limiting your project to C means that people don't screw that up, and also means that you get a lot of programmers that do actually understand low-level issues and don't screw things up with any idiotic "object model" crap. So I'm sorry, but for something like git, where efficiency was a primary objective, the "advantages" of C++ is just a huge mistake. The fact that we also piss off people who cannot see that is just a big additional advantage. If you want a VCS that is written in C++, go play with Monotone. Really. They use a "real database". They use "nice object-oriented libraries". They use "nice C++ abstractions". And quite frankly, as a result of all these design decisions that sound so appealing to some CS people, the end result is a horrible and unmaintainable mess. But I'm sure you'd like it more than git." -Linus Torvalds, a programmer with 25+ years of project maintenance, management and programming experience with assembly, C, and C++ "C++ is a badly designed and ugly language. It would be a shame to use it in Emacs." -Richard Stallman, a programmer with 30-40+ years of programming experience Spend 15 seconds on Google and you'll find plenty more discourse. And I agree with all of it, because they are speaking truth. C++ is an ugly clusterfuck of a language with an abundance of ill-conceived features. You're the mindless drone. "again, please first understand the differences between C and C++ before spewing nonsense. you're the reason people write shitty and unsafe C code, literally slit your wrists and stop programming." Literally that whole paragraph applies to you.

[@FingersBlazin]

C++ is probably crappy as hell but I'm here just because a job I'm applying for requires some knowledge of it for hardware test automation. I know C also so I understood your code, it looked fine. There is a lot of similarity so I'm getting the feeling that my C is actually getting more solid while studying C++.

[@BradenBest]

FingersBlazin Fair observation. Thanks for the mini peer-review...and for not flipping out on an insane C++-worshipping rant like that other guy.

[@alexanderleeart]

Yes, but I was referring to the particular case where my professors were talking about these same basic fundamentals. I am completely in favor of advanced terminology and conceptual structures, when they are necessary. But I think Bucky does a better job of introducing the basics.

[@addyy_24]

you are he best c++ teacher in the whole universe

[@AlanCarre]

Here's the thing. Code wise, it does not matter. The problem with a "while(1) {}" statement is that at warning level 4 (which is where your warning level should be and no lower) that statement issues a warning (conditional expression is constant). Now, unless you have a decent compiler there's no way to shut that warning up without disabling it. So you've lost the benefit of the warning. for(;;) {} OTOH does not issue any warning, so you can keep the warning on and allow it to do its job.

[@alexishernandez-contreras3330]

I laughed out loud when you said deal with it haha love it - great video!

[@gonzo191]

@broadude well in general c++ is used mainly for all systems, there's also c#(XNA) for xbox specific games, java for games dev is slowly on the rise with minecraft. To make that decision its always best to determine if a language has suitable game making libraries documentation & help forums on such topics. C++ - lazyfoo dot net (SDL, OpenGL) C# - microsoft provides links on their site Java - lwjgl dot org hint you can also just youtube\google 'language' game tutorial

[@jamesnorth4122]

He is saying that his professor makes this stuff, the fundamentals sound super complicated when bucky makes it sound as it is supposed to sound, simple.

[@drvir]

#include using namespace std; int main() { for (int x = 0; x

[@tinolax7724]

Its ok without return 0

[@koustubhsharma2807]

You did wrong! there is no end bracket for int main;

[@koustubhsharma2807]

Thanks for clearing my doubt

[@SeanRamey]

@Programmer142 the for loop is more limited with stuff you can do and is more compact. The while loop is easier to understand and deal with I think so I never use for loops.

[@ThirtyVirus]

can you please have an extension of this series that goes into game programming?

[@skychy]

@gonzo191 C++ also has the Allegro library which is good for game programming

[@popescudenis7562]

thanks, i had problems understanding loops

[@zy.r.4323]

U just need some time to understand loops. Keep watching

[@timlyo]

4:06 the boop continuation condition? did I miss hear or is it really that cool?

[@Moon_Rose달장미]

sorry to say but u misheard it, it's loop continuation condition....ik it has been 8 years since u asked this, so by now u probably and obviously know that..

[@Allyg3000]

Wow, C++ has so many things like Lua. Yes that's right, I'm one of the far and few Lua programmers!

[@syntheticworlds]

This really helped! thank you!

[@lazzerbear]

God nothing but watching C++ and java tutorial for 2 days now.

[@Grimm_6th]

Very helpful, and very easy to understand and put into use. Thank you good sir.

[@calccalccalc]

You're awesome dude!

[@shatley123]

yeah tuna sandwiches and fish and stuff like that make it so much easier man

[@Remychels]

basically the same thing as a while loop. Good video.

[@formulaint]

You use a while loop when you don't know where to end, but yeah they do the same thing.

[@PossibleTango]

I'm learning

[@lastofthestars6481]

where are you now in your programming journey :))

[@ckingz850587]

Bucky the legend should build an operating system and you bet me pc is going to be running it.

[@rohangupta1499]

Bucky bhai is awesome..!!

[@NikorasuChan]

I used this alot in GML before, so this is as easy as pie to me XD

[@TheBurgdorferi]

Does loop continuiation condition must have variable that is defined for the 'FOR' loop or it can be any logical operation such as for(int x = 1; 4

[@stefomc1228]

2019?

[@ملاحظةبارعة]

2020 huh

[@rngnodal9316]

2040 huh

[@priyanksisodia5889]

huhhhhhh watch dark

[@mantiquenawaz823]

2021 here

[@donovanelliott9060]

2021 now :)

[@toxictriggeredgamer]

#include using namespace std; int main() { for (int x = 1; x >0; x++) { cout

[@XxnitroxXxwarrenxX]

Thanks soo much !! really helped !!

[@dragonishu]

what compiler are you using???

[@MrPedala94]

@zszs100 perhaps you run a different program such as microsoft visual studio?

[@xCr0nus]

i made a simple program to output a sequence of fibonacci numbers up to the number inputted by the user. how can i make this program loop repeatedly, instead of only allowing the user to "press any key to continue. . ." and exit when it is done?

[@aronreviour9164]

this can be done in a while loop extremely easily

[@acrazyindian]

looks cool, but would work with any integer which is positive :D

[@woodivan]

really helpful, thanks!!

[@TheTechSpaceUS]

When declaring an object do I have to put it on top the where the objects is being used to call a function? Because when the object declaration is on the bottom it seems to not work.

[@vplof]

What should i do to print a series of character using the for loop. # ## ### #### ##### something like this

[@gonzo191]

wow its been a while since i used c++ as school focused on java

[@priyanksisodia5889]

i just realize that ,your comment is 9 years old, can i expect a reply

[@Qazqi]

C++ is already hard enough to parse, but for (int i : boost::irange(0, 10))

[@niceheadcrab34225]

Sounds more awesome than weird :)

[@3dUber]

is there a way to change the increment each time it loops? thx

[@DeividasGedgaudas]

To infinity and beyond

[@AlanCarre]

Forgot this goes ahead of that 00402403 stc

[@FingersBlazin]

I tried doing this the way we were doing them a few lessons ago: why no workey? #include using namespace std; int main() { int x=1; for(x < 10){ cout

[@grahamcracker-inc]

I have a couple questions. Can the variable be declared outside of the for function, and isn't the middle/second part of the for function just a while function squeezed in there.

[@787310]

+THE UNIVERSE probably too late to reply but 1. yes and 2. most for functions can be rewritten as a while statement, so yeah basically. for functions are just "all in one" so to speak

[@samiamiax]

Thanks for replying anyway, it really helps future viewers like me with the same questions.

[@dvorapat]

if _x++_ => _x+=1_ => _x = x+1_ What is _++x_ equal to? Thanks for answer :-)

[@puffbluesam021]

Example: if x = 1; Then "cout

[@BradenBest]

x++ is the odd one out, not ++x. All other expressions return the result of the expression after evaluation. x++ and x-- are the only operations that return the value _before_ the operation is done. Thus, (x++) < (++x) == (x += 1) == (x = x + 1) Another way to think about it is to look at the order of the tokens: x++ -- return value, then increment ++x -- increment, then return value

[@H2kPrograming]

is there any enhanced for loops in C++ like in java?

[@MrTom1750]

Im 12 and this is very easy to learn. I had a Lua teacher and he said that it would be very hard for me :) But its not ;D

[@zszs100]

Why i copied it exactly the same but it doesn't work for me I get error? I did something wrong when starting a new project?

[@PixelPulse168]

I want to know how to use pointer and array.

[@babylongate]

best video

[@evannera2077]

buena esa

[@virendermohan7030]

In the 'for' loop, does the order of the conditions matter? eg-(1) for (x=1 ; x

[@totsuzo7582]

It does matter. afaik

[@KonradCha]

I think the order is essential here. It defines what you are going to get in result of execution such command.

[@thomasabramson100]

code did not run nothing outputed on screen used your code #include using namespace std; int main() { for (int x = 10; x < 10; x++){ cout

[@damianmatthews2954]

check the variables within you for loop parameters. It should read for(x=1; x

[@thomasabramson100]

Damian Matthews thanks got it

[@jmc8896]

can you give me app in android for looping? because i can't compile that in c++ coding

[@605jik]

start at 1 and increment by 2?

[@mcg20k]

I sent you a message with the code to make that pattern due to youtube not letting me put code in the comments.

[@DJLad16]

I love you, got so annoyed about have to keep switching back to my mouse :D

[@GobbleDGoopple]

won't that crash a computer

[@meganathansubramani2070]

what is the code for show only odd or even numbers?

[@cjmproduction]

Am I weird because I click his ads as a way of saying thanks?

[@tourist1r]

Sometimes I feel we should be in the matrix world where over 9000 copies of Bucky can be made so we can all have a Bucky in colleges...etc

[@DJLad16]

I wish there was a shortcut for build and run

[@BP28Gamingsxz]

Can you please do a asterisk pyramid using for loop plssss

[@koustubhsharma2807]

Bro , U did not declare x but it still worked. BUT HOW??????????????

[@AlanCarre]

You know ... it's too bad you were so rude. Because in fact what you have *is* the correct way of doing it, but nobody will see the comment because it's been voted down too many times. I clicked it because I was curious about what could possibly get people so worked up about a simple while loop. - A

[@herp_derpingson]

True story

[@DJLad16]

I wanted him to do that as well, but then I thought he might not know how :(

[@danka2489]

nzambe na bango

[@MrMitmit123]

do this set the variable to 0 set the test to < 100 and set the incrament x+= -1

[@a_wise_person]

is it intermediate level or beginner level please answer guys.

[@hetaeramancer]

EXPERT LEVER!LL

[@mrreflecting4691]

"Basic Bucky terms" hahahahha

[@awesomelemonade]

@MrMitmit123 or you can do x-=1

[@abhishekkulkarni7057]

but why not use the RETURN value? Can someone tell me?

[@abhishekkulkarni7057]

Peterolen So there is no need to return value if the function is main() ?

[@abhishekkulkarni7057]

Peterolen Thanks buddy! You helped a lot.

[@lazyblaze508]

How can I get this loop to start with a number that I want to put in myself? So instead of x=1 i want to be able to put in any value for x and it still do this loop.

[@mariioji3598]

are you looking for something like this int x; cin>> x; for(x; x < 10; x++){ cout

[@TheDiamondGames]

write it in main like so: int count; cin >> count; for(int x = 1; x < count; x++){ //yourcodehere }

[@nivednambiar6845]

what is the difference between for and while loop

[@AaronGerde]

NIVED NAMBIAR while loop is usually based off a user input, so while this do that. While (x >1) {logic} For is more defined by you when to exit. For(your integer, when exit, How much count each iteration) {logic} I usually will use a for loop to gather information into an array, and a while loop to keep a program going. Like his tutorial that talked about Sentinal operators.

[@augustehrlich1470]

Honestly I think that for loops are just condensed versions of while loop. THey can be used for the same things, its just a matter of preference.

[@Muhammed.Yaseen]

Ahem! Bucky terms! XDDD

[@namelast-name616]

run it and wait till it ends: #include using namespace std; int main() { for(int x=1; 10

[@swayamsidhant2318]

I am tourist(Jr)

[@ownz100]

@vplof i want to know that too

[@yasmindamia8180]

how to use in stdio.h??

[@68ncom86]

It would be a lot simpler if you could just do for(10){ Come on, C++!