objective-c multi-dimensional array

Question

I want to use a variable-sized multi-dimensional array in my app to save data. The data structure I want to use is as below, the first element in each row is followed by c

Answer 1

use NSMutableArray

Below is the example for your understanding ...

NSMutableArray * multiArray = [[NSMutableArray alloc] initWithCapacity:5];
[multiArray addObject:[NSArray arrayWithObjects:a,a_val1,a_val2]];
[multiArray addObject:[NSArray arrayWithObjects:a,a_val1,a_val2,a_val3,a_val4]];
[multiArray addObject:[NSArray arrayWithObjects:a,a_val1,a_val5]];
[multiArray addObject:[NSArray arrayWithObjects:a,a_val1,a_val2,a_val3,a_val4,a_val5,a_val6]];

And Don't forget to release to multiArray array because we have alloced it ...