Declare Dynamic Array

Question

How Can i declare dynamic array ? for example int k=5; i want to have an array like below

int myArray[k]

Answer 1

if i read the question right.. (unlikely at this point)

NSMutableArray *myArray = [[NSMutableArray alloc] initWithCapacity:k];

Answer 2

In Objective-C, the standard way to do this is to use the NSMutableArray class. This is a container that can hold any object (note that int is not an object! You'll have to wrap your integers in NSNumber.) Quick example:

NSMutableArray* someIntegers = [[NSMutableArray alloc] initWithCapacity:1];
[someIntegers addObject:[NSNumber numberWithInt:2]]; //I've added one thing to my array.

[someIntegers addObject:[NSNumber numberWithInt:4]];
//See how I can put more objects in that my capacity allows? The array will automatically expand if needed.


//The array now contains 2 (at index 0) and 4 (at index 1)


int secondInteger = [[someIntegers objectAtIndex:1] intValue];
//Retrieving my second int. -intValue is required because I stored it as NSNumber,
//which was necessary, because NSMutableArray holds objects, not primitives.