how to write setter to assign variable to an another variable

Question

i want to assign a content of one variable to another

Answer 1

http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/ObjectiveC/Articles/ocProperties.html

Answer 2

The purpose of a setter is not to assign one variable to another.

What you want is a method.

Answer 3

I am guessing the poster wanted something like this:

@interface MyClass : NSObject
{
    int someRandomiVar;
}

@property int veryImportantNumber;

@end

@implementation MyClass

@synthesize veryImportantNumber = someRandomiVar;

@end