Question

anyone know hot to fix: error: invalid conversion from `const double (*)[3]' to `double
(*)[3]'

Answer 1

what code are you having trouble with?

Answer 2

I would bet that you are modifying a constant pointer-to-array variable somewhere. But you need to let us see the code.

Answer 3

I have that happen all the times: u just gota change ur pointer.

Answer 4

Are you familiar with the const keyword and const pointers? If not, it's a good topic to read up on - const correctness can make your code safer and more reliable.
const double * and double * are two different types that can't be cast between implicitly. In C, you should use an explicit cast like so:

const double *src;
double *dst;
dst = (double*)src;

In C++, you should use const_cast:

dst = const_cast<double*>(src);

Generally, if you're compiling C++, never use C-style casts. There's no compile-time or runtime checking, and they're relatively unsafe.