updating an array

[cnewby]

I'm not sure if I'm phrasing this right...
I'm trying to read an array, copy info into
another array and then work with that new array.

For instance:
-do stuff with current array
-results go into new array
-new array becomes current array
-do stuff with current array

What are my options? And let me know if this isn't specific enough.

[Disch]

I'm not entirely sure this is what you mean, but if you are using std::vector, there's a swap() function which does what you're describing:

std::vector<int>  a(10);   // array of 10 elements
std::vector<int>  b(10);

// do stuff with 'a'
// results go in 'b'

a.swap(b);  // swap a and b

// now, 'a' is the old b and b is the old a 

[cnewby]

Well I'm definitely not using vectors, but your idea about "swapping" is what I was talking about. I just have myarray[][] and newarray[][] and I need to make newarray become myarray.

[webJose]

Jagged arrays are the worst. Create a struct or a class that encompasses your related data, and then use a one-dimensional array of structs/objects. This would be a much preferred way, if your scenario allows for it.

[Disch]

multidimention arrays = YUK YUK YUK

If you are using pointers you can swap the pointers:

int* a = new int[10];
int* b = new int[10];

// swap a and b
int* tmp = a;
a = b;
b = tmp;

If you're using straight arrays, then the only way to swap them then is to copy all the data over.