How to acceses and give a value to the NSArray* center and how to print it.

So we have learned how to call upon the methods by setters and getters then assigning values to them. But we have only done this for the float.

I have 3 questions.

1. So my first question is, how do you do this for the NSArray* center? I want to call the method and assign it some values.

2. What "types" of values can i assign the NSArray? Can i assign it to be a array of chars, or an array of floats?

3 Last question is for the getter. When we declare the setter for example:

-(float)radius { return _radius }

Why are we returing the _radius? Since we have also assigned "_radius" to the variable "radius" what happends when we call it in the NSlog?

Example: NSlog(@"\nball radius is %f", [ball radius]);

As the above, radius is the same as _radius. But what does _radius contain?

Sorry for wall of text, but i just dont feel comertable moving on unless i have understood everyhting otherwise it feels like im never going to understand.

Best regards Armend