Question

Is it possible to convert a single dimensional array into a two dimensional array?

i first tought that will be very easy, just set the pointer of the 2D array to the beginning of the 1D array like this:

int foo[] = {1,2,3,4,5,6};
int bla[2][3] = foo;

because i can easily create an two dimensional array like this:

int bla[2][3] = {1,2,3,4,5,6};

so the question is now, is there a way to convert it via the pointer?

Answer 1

You can’t initialise an int bla[2][3] with an int* (what foo becomes in that context).

You can achieve that effect by declaring a pointer to arrays of int,

int (*bla)[3] = (int (*)[3])&foo[0];

but be sure that the dimensions actually match, or havoc will ensue.