C Programming Tutorial - 9 - I Need Arrays

[ShadyRapture]

Some advice:
1. You need 1 extra byte for the null terminator, so don't forget to add 1 to whatever the number of chars+white spaces you have in your name String.
2. You will most likely need to include the preprocessor directive #include <string.h>
3. When you use strcpy, if the second string (bacon) is larger that the first string (tuna) it will give you an error because you're trying to fit 6 chars into the string that was already initialized to only 5 chars.

[fynnkarn-wadden]

LOL  "your gonna sell this badboy to microsoft fior millions"

[alacastersoi]

easy way to remember
strcpy = string copy

[iiigen]

i had to inlclude '<string.h>' to get this to compile without errors, in case anyone was wondering.

[kentronator]

I just got the joke of the title... XD

"Arrays" is like saying "A raise" =P

[MrDivad]

Add
#include <string.h>
to your header in order to get rid of the implicit declaration warning.

[atierintel]

Bucky: thank you x1000 for not being that one guy who overcomplicates everything. You're a really good teacher and I have learned a ton from your videos. Keep it up man

[prageethchamikaraabayakoon]

it will be more cooler if you could enlarge the font size

[slgaming]

Always remember when using strcpy that you allocate enough bytes of memory for the buffer you are wanting to write to, otherwise you will cause your program to have a buffer overflow because the data will be forced out of bounds. For example

char tuna[13] = "I Love Tuna";
strcpy(tuna, "Tuna is the greatest food ever !!!"); <-- That right there would overflow the buffer. Always make sure and allocate enough bytes. Otherwise expect bugs and crashes

[iikkakonola]

dude, you are making good videos - and i am comparing tutorial videos usually to khan academy videos(which are generally brilliantly made by education pros). Thanks!

[karolkozakowski]

if someone will have problem that when compiling by console on linux using gcc -o command there will be an error with "undefined reference to strcopy" you need to do 2 things :
1. change strcopy to strcpy
2. include <string.h>

[tarloktarlok]

Your videos are amazing!!! These are the best C Programming Tutorials Ever!

[rajattalnikar]

8 years later...this Playlist is still as relevant as it were 8 years ago.

[nicholaslee]

This treehouse ad is starting to get very annoying.

[martinxXsuto]

some notes i'd like to share while messing around.
In this IDE if i put

char name [6] = "Bruce"
printf(name)

Then it works just as you expect.
If i change the length of the array from 6 to 5, then it works exactly the same way.
If i leave it at a length of 6, then change the value of item 6 in the array to 'h', then it would print out "Bruceh"
If you change the 6 to 4 then it would print out "Bruc"

This makes me feel that you don't need to leave an extra byte for the terminator. At least in this IDE.

[narimancharkie]

your videos are great, i never get bored. thank you!

[mayROBO]

how can strcpy() work, because food was of size 5 when "tuna" was stored in it, wont copying "bacon" which is of size 6 will create a problem. memory overflow??? or strcpy() takes care of that?

[badrchaouch]

The array size is the size of the elements of the same type but not the number of bytes because the size of a single character is not one byte.

[goggog]

thenewboston I'm seriously surprised you didn't mention buffer overflows here. I mean they are a serious threat that I believe if you make people aware of them, they'll be less likely to occur. I obviously wouldn't expect you to explain them in detail to beginners but like I would've thought you would've said something like "If you put to many characters into a string, it causes something called a buffer overflow which is not good, so just uh don't do that. (Maybe even add: "You'll learn more on this in a later episode" or something.)

[nanotech]

Thanks for the videos, I seem to understand C a little better now.