Simple User Input in a CL Program

I'm learning to program, but I'm having trouble trying to get data into my app. I've been watching the Lynda Videos and they are very helpful. However, there are many times when its stated in an early video "we will cover that later" or "you don't need to know that for now" but its never covered... very frustrating. its like learning how to drive a car but then never being shown how to actually get it started. lol

What I'm looking for is some type of user input code. I want to write a simple app that takes in some data, say 3 or for numbers does some math on them and spits back out some result.

 

Command Line

 

Objective-C

My end goal is to turn a lot of the calculations I do on a daily basis for work into apps or an app package.
But i want to learn the language first.

Ill try that scanf

 

Thanks that works, for now;

Code:

 int myNumber;
        NSLog(@"Input:");
        scanf("%d", &myNumber);
        NSLog(@"Output: %d", myNumber);

I did a little search on scanf.

My next question is what does the & do in the scanf line?

 

Make sense.

Just checking, but the simple idea is the the & signifies the direction data is traveling in the program to the program its self?

 

I agree! I'm just having a hard time knowing when to use * or & or nothing at all... lol I get the idea of the point just the when to use what is giving me to use trouble. but thats why I'm learning it in Command Line programs rather then deeper programs

 

I saw those and will see if I get any barns & noble or amazon gift card tomorrow I found that the apple reference is a great place.... so long as you know what you looking for. Same problem as trying to figure out how to spell a word by looking it up in the dic... lol

 

Out of those two books, what book would you recommend as a "read all book" rather then just a reference book?

I found it both in the iTunes book store and have a gift card for that!

 

Thanks!