Objective-C Tutorial - Lesson 13: Part 3: Extending Your Program

Objective-C® for Dummies® by Neal Goldstein, Copyright © 2009 by Wiley Publishing, Inc., is the main source of information for this video.

We finish typing all the code for extending the program. I then go over the whole program and explain exactly what happens at runtime.

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[theOnlyHe110]

Why are all the code in C, instead of Objective-C?

[macandcomputerhelp]

@theOnlyHe110 Because we first have to cover C before we can move into Objective-C.

[synergy989]

I am a bit confused here, this video really helped that's for sure but I am still a little lost with pointers (the whole address thing).

How come before you put the & and * signs the program didn't work properly but after getting it's address it all of the sudden worked? I guess I am little confused about the whole address thing - I saw your video earlier and rewatched it but I am still a little lost.

If you could clarify that would be great but I have a feeing I will get it soon..

[macandcomputerhelp]

@synergy989 Are you still having problems?

[alan080890]

I just don't get how the program knows what to use when you use something like eitherBudget when you never used it before.

[ndproductions000]

you are the best

like if u think hees awesome

[tgrlaw1]

Your lessons are very helpful.

[masterniket]

Could you use arrays or some sort of structure to group all the budgets together? Or have I missed a lesson on arrays........

[Technoguy3]

Also, what's void? It seemed like you just magically started using it, and I don't remember which if any video you explained it in.

[Technoguy3]

Does not compute. I've gotten lost in a sea of budgets and foreign currency. xD I keep getting No member named "theBudget in "budget".

[zamoray123]

Hi, thanks for your time to upload videos with explanations, I was reading the Dummies book, and to reach budget holidays I was frustrated about leaving him so ... now to finish watching the videos on this chapter I see light .... understand how logic works but I need to be completely sure .. I will continue looking through the detail

[shieldsdundee]

top tip on the parenthesis for using the asterisk as an operator, getting less errors now since I realised this - thanks