How to pass values by reference in objective C (iphone)

Question

I have a very basic question. I\'m a new iPhone programmer. My question is can anybody tell me how can I pass values by reference to a function in obj. C? I know how to do

Answer 1

There is no passing by reference (in C++ sense) in Objective C. You can pass your objects by pointer, and for primitive types by value.

Example:

void func(NSString* string)
{
  ...
}

void func(NSInteger myint)
{
 ...
}

..
NSString* str = @"whatever";
NSInteger num = 5;

func(str);
func(num);