function returning pointer to 2d array

i do it like this

typedef int array[100][100];
void foo(array& a);

but theres probably a better way

Quote:

Original post by subflood I have a 2d array of type int in one of my functions. I'm not sure how the function prototype should look so I can return the 2d array and the return value will be assigned to another 2d array or a pointer to pointer. Again I'm not sure if the return value of the function should be assigned to a pointer to pointer or a 2d array.

If you are using C/C++ and define the array locally within the function then returning a pointer to that array wont work, after the function completes the array is gone and your pointer will point to who knows what. Your best bet is probably to pass in a pointer to the array you would like to fill and then either use that function and fill it from your temp array or directly write to it.

HTH

Something like this will work:



EDIT: Should also note that you should not assign that return value to a pointer to pointer to int, as that will not work as you expect.

/\/\/\/\/\/\/\/\/\/\/\/\/\ Thanks this is exactly what I was looking for as I'm still having some trouble understanding pointers to 2d arrays.