convert two dimensional array to one dimensional in C -

i have 2 dimensional array this:

ptr = (int **) malloc(size);  (i = 0; < len; i++) {     ptr[i] = (int *) malloc(size); }

is there simple way create int *intptr array such can access values in row major order?

e.g.: if ptr points n*n array, want first item of second column this: *(intptr + n)

i need conversion pass 2 dimensional array cuda kernel, want avoid pass 2 dimensional array kernel because seems quiet complicated.

no. if had allocated true 2d array of ints:

int a[size][size];

then answer might yes though result not portable. refer this article more array type punning information.

but accessing element in row of array requires explicitly dereferencing pointer.

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