Dynamic 2d Arrays

I believe that the following code is correct for creating a dynamic 2d array K(which is a **int) :

int **K;
int n;

/* Create a pointer to each row of the matrix. */
K = (int **)malloc(size * sizeof(int *));

/* Create each row of the matrix */
for(n = 0; n < size; n++)
K[n] = (int *)malloc(size * sizeof(int));

My question is: If I refer to an element in K, is it valid to use subscripts(ex. K[1][1])? Is the memory region created by my code analgous to the memory region generated by a statitic 2d
declaration(ex. int K[size][size])? I have had no problems yet, however I am worried that I will find a problem later.
Thanks

http://www.eskimo.com/~scs/C-faq/q6.16.html
The FAQ on this page answers both your questions. Hope this helps

Thank you! Excellent response!(That second method in the FAQ, however, looks horrible. )