#include <stdio.h>
#include <stdlib.h>

void f(int *p, int nrows, int ncols);

main()
{
	int a1[][3] = {
		{0, 1, 2},
		{3, 4, 5}
	};
#define A1_ROWS (sizeof a1 / sizeof a1[0])

	int a2[][5] = {
		{ 2,  3,  5,  7, 11},
		{13, 17, 19, 23, 29},
		{31, 37, 41, 43, 47},
		{51, 53, 57, 61, 67}
	};
#define A2_ROWS (sizeof a2 / sizeof a2[0])

	f(&a1[0][0], A1_ROWS, 3);
	printf("\n");
	f(&a2[0][0], A2_ROWS, 5);
}

void f(int *p, int nrows, int ncols)
{
	int row;
	int col;

	for (row = 0; row < nrows; ++row) {
		printf("row %2d: ", row);
		for (col = 0; col < ncols; ++col) {
			printf("%2d", p[ncols * row + col]);
			if (col < ncols - 1) {
				printf(" ");
			}
		}
		printf("\n");
	}
}