row major ordering & column major ordering

two-dimensional array.cc

#include<iostream>
#define MAX 100

using namespace std;

//make row major ordering 
int (*make_row_major(int a, int b))[MAX]
{
	int arr[MAX][MAX] = { 0 };
	int temp = 1;
	for (int i = 0; i < a; i++)
		for (int j = 0; j < b; j++)
			arr[i][j] = temp++;
	return arr;
}

//make column major ordering 
int (*make_column_major(int a, int b))[MAX]
{
	int arr[MAX][MAX] = { 0 };
	int temp = 1;
	for (int j = 0; j < b; j++)
		for (int i = 0; i < a; i++)			
			arr[i][j] = temp++;
	return arr;
}

//print a x b array
void print(int (*arr)[MAX], int a, int b)
{
	for (int i = 0; i < a; i++)
	{
		for (int j = 0; j < b; j++)
			printf("%3d", arr[i][j]);
		printf("\n");
	}
}

int main()
{
	int row, column;
	int(*arr)[MAX];
	cout << "row : "; cin >> row;
	cout << "column : "; cin >> column;

	cout << "== row major ordering ==" << endl;
	arr = make_row_major(row, column);
	print(arr, row, column); cout << endl;

	cout << "== column major ordering ==" << endl;
	arr = make_column_major(row, column);
	print(arr, row, column); cout << endl;

	return 0;
}