Part 2: C Programming Tutorial 3- Strings and Char Data Type in C: Game Programming Series

[wiggium]

Hi, you said that %d signifier showed that it was a double, however in previous videos I thought you said %lf was a double?

[bondservant4Him]

@wiggium thats right it was a mistake

[sonfromheaven]

Answer the Question please:::

How do I handle key presses and key up events in the windows message loop? I need to be able to call two functions OnKeyUp (char c); and OnKeyDown (char c);???

[AJJSDN]

when are you going to post the next video?

[ParamjitGill1]

umm..when you made the character for your last name at 5:56. You created 10 elements but 'Lassoff' only contains 6 elements. What happens to other elements left? Thanks!

[LearnToProgramDotTV]

@ParamjitGill1 The memory for the remaining indexes will remain allocated but not initialized. 

[jjtheslayer69]

@LearnToProgramDotTV waster

[Fa4stCracka]

Amazing tutorials! Simple to follow and give you good concept.

[Talsciemalegenda]

Thank you very much! :)

[inu11byte]

I've subscribed. Please make some more C tutorials. -Cheers.

[LadiesmanGW]

Thank you for these videos I am learning a lot!

But I do have a question, either I have not heard correctly or you have not explained.

What is the '\0' for? I don't understand it at all... but I do understand the rest of the video.

[pixelnat0r]

5:16

[CaptainLemonPants]

does defining the character length with [10] give the max amount of characters you can use, because i have used [10] and set the variable to a string of less letters then 10 and it works fine.

[bkgamesinc]

i cant find your next video is this your last one ?

[amperamp5]

quick question i noticed when i changed char name [10] = { ' \ 0 ' }; to char name [5] = { ' \0 ' }; and then i typed anthony it still worked as is the 5 was a 10 i thought the 10 told the program that the word anthony had to be 5 letters long

[amperamp5]

ya this lesson was a lil hard but i think i understand it it was just alot being said and learned at once but still a great video

[ian101ist]

u really made me understand the intros of c as they were giving me headache

[n00peh]

@LearnToProgramDotTV I sometimes see code like printf("Length is %zu\n", strlen("hello"));... What is %zu used for? Additionally, I typed your strcat code up and ran it on ideone.com where it gave me the error SIGSEGV (and a wikipedia link to describe it). What does that mean?

[LearnToProgramDotTV]

@n00peh %zu is the sizeOf operator. It will return the number of bytes the datatype used takes in your machine's particular architecture.

I haven't tested anything in ideone.com, so I can't really address your comment about that. Sorry.

[n00peh]

@LearnToProgramDotTV Oh. I tested it in my debugger which seems to indicate something is wrong with strcat(userName, lastName);...

[geekycode]

@LearnToProgramDotTV I get a crash too, with microsoft visual c++ 2008 express it tells me: Run-Time Check Failure #2 - Stack around the variable 'userName' was corrupted.

I ran it in Dev-C++ and it seemed to work at first, but then when I changed the lastName string to something longer (130 characters) it brought up "Lassoff_Example.exe has encountered a problem and needs to close. We are sorry for the inconvenience." When I tried "Debug" instead of "Run" it caused devcpp to crash!

[sreychresse]

i have a problem

during printf(your name etc

it wont run because it says 'synatx error before printf

[ludvikasfilmskapare1]

Thanks. Help a lot.

[swed3344gh7]

thank you sir



[darkuran]

Do you realize that you're invoking undefined behaviour (thus a potential crash) in here? userName only has room for 5 character (incl. the terminating \0), and you're adding 7 more to that.

[shadowsimbiote2]

why getchar() twice? :P

[bigshotking12345]

Where is part 4? I'm learning so much from you! I really hope that you continue the C tutorials!

[Vikosaurus]

%d is for decimal, meaning integer..... i think double is %lf.... but this does not take away how good the tutorial is, its really helpful thanks

[mosawimmz]

thanks soo much mark! your tutorials made my life a lot easier!! you should be a professor!!

[AutomatonGames]

Need more C tutorials! These are the only good ones! :(

[tibiaowned1]

HELP :D i cant use stdio.H :S how can i downlaod the Stdio and download it so i can use it (vista) hope u guys understamd:S

[monkeyThe3]

when I compile the file the consolee window opens up only to display your name is M but I can type in the rest. why is not showing up with the name already pre-typed in the window?

[bondservant4Him]

%d is an integer not a double, %lf is double

[k1ller2one]

@bondservant4Him agreed

[bulitbill12]

great vids keep the brilliant work up Mark!

[Shresthahari1]

I couldnot find the next part turorial.

[bulitbill12]

Thanks for another brilliant episode of programming goodness!

[FudgeY1337]

you say %d is a double, i thought it was a int?

[mrlogan1144]

Please continue onto this series, I love these tutorials!

[kuha5ster]

why do we need getchar() ? wht is getchar() function used for?

[DeeWeext]

@kuha5ster To get an imput and not to close the program.

[Nickiscoollikebunnyz]

@kuha5ster makes it so that when the console appears it doesn't instantly disappear

[livehotel1]

Please make a tutorial 4!

I love your series and i have subscribed and rated!

[jontheskillful]

these tutorials are simply amazing, and your voice is clear and easy to listen to

astounding teacher

[talkbuzz]

u r greaat  sirrr.....excellant

[darksideXXXXX]

ur tutorials are great!! even an elementary student can follow and learn from this.. i'll subscribe..

[OliverCooksey]

I have started to get ahead of what is happening in the video at times. I think this means im learning :)

[darkestshadow21]

%d returns a integer not a double. A double is %lf

[L337L0L]

your tutorials are amazingly easy to understand please make some more

[lperez0817]

I have tried this Tutorial.

The code do not work for me

[Metal404Head]

Fuck im confused...

[Destroyer19941995]

on strings i am getting warnings source files not compiled?

[ComputerGeek3334]

Hey guys,

If ur having any trouble with this stuff just sign up to : programminghelper.webs.com : the site offers completly free help. FREE signup. FREE tutorials. FREE videos

[mcgath2]

very good tutorials

[halang2x]

wow.. Lassoff, kinda like a longer laughing my ass off... haha.. just joking..

[TheDarkSagan]

Was this the last in the series?

[TheDarkSagan]

Kinda lost me at the end.

[n9nes9]

You really should teach to use scanf() with a length specifier to avoid buffer overflows. The "name" example is vulnerable to buffer overflow because you haven't specified a length of characters to read in.

scanf("%s", name);

Should be replaced with:

scanf("%10s", name);

If you know the length of the buffer, then there's no good reason not to specify how many bytes to read. =)

[hajiamano22]

Console.WriteLIne("What is your name?");

string name = Console.ReadLIne();

Console.WriteLIne("Hello" + name + "How are you doing");

[jigglethat]

Tutorial 1and 2 were easy but this one confuses me X_x

[TheChemistSupreme]

@jigglethat Same here! I find 2:01-5.00 really hard to understand!



[hajiamano22]

@TheChemistSupreme i'M not really good with C++ but if you look at it the same in C# it looks as if hes creating a array.

[shawyer999]

These guys are great man haha. First time i've ever touched stuff like this.

With your part at the end where it had firstString secondString and all that I took a bit of initiative and made it add them together to tell me how many characters there were altogether :P I was quite proud :D. Keep the awesome guides coming

[manutube8080]

now i dont get it *-(

[MarkoVojvodic84]

Please make more about C. Thank you for 3 episodes.

[nitebomb1]

can u make a vid on how to code hacks for crossfire ?

[mttube321]

did you make any new tutorials in this series? Your tutorials are excellent.

Thanks

[LearnToProgramDotTV]

Thanks so much for saying so! I have a couple of new tutorials out, but nothing new on C. Hopefully this week or next I'll have some more. If you subscribe to my channel, you will be notified whenever I come out with a new tutorial. Thanks again!

[imgoingtokillyourmom]

Metallic voice can ruin your program!

[Punniabi]

strcat is the gluing how do I unglue some amount in the middle what function is that.. like

MarkLassoff..

I want to remove Lass.. to get

Markoff

what function is that? i'm trying to make a buffer with removing data anywhere inside .. then joining the left over to make a new data? or there is no such function? not talking about sub stringing.. i want 1 single function

[Punniabi]

strlen counts up to the null terminator \0.. if you add that in the beginning it would say size 1.

[DubCartel]

thx for this tuts...make some continues.

[jdude0822]

thanks man. you really deserve more views.

[Mogzieno1]

Thanks so much for these tutorials! Please make some more! :)

[Arglem1]

thank you so much please make more soon