Question

I am trying to send c-style array of integers to objective-c method, but in method I recieve only first element of array.
This is an example:

int a[3];
a[0] = 111;   a[1] = 222;   a[2] = 333;
[self getMatrix:a];

then

-(void)getMatrix:(int[3])matrix
{
    return;      -- breakpoint here
}

So, when debugging stops at breakpoint, i have matrix:

matrix  int *   0xbfffddd4
*matrix int 111

Where are other elements?
So, 2d-arrays become to 1d array, 3d-array become 2d-array etc.
What I am doing wrong?

Thanks!

P.S. NSArray is working fine ofc, but I can’t imagine how to work with multidimensional (3d, 4d) NSArrays w/o writing tonns of code.

Answer 1

-(void)getMatrix:(int[3])matrix
{
    int a = matrix[0];
    int b = matrix[1];
    int c = matrix[2];
}

You will see that the values are correct. There is nothing wrong. The debugger is only showing *matrix which is the first element. Here matrix itself is a pointer to integer or int *.