// Author:  Keith Shomper
// Date:    10/3/05
// Purpose: To demonstrate multidimensional arrays

#include <iostream>
#include <iomanip>
#include <time.h>

using namespace std;

int main() {
	const int ROWS    = 4;
	const int COLUMNS = 2;
	string    s;
	int       a[ROWS][COLUMNS], b[ROWS][COLUMNS], sum[ROWS][COLUMNS];

	// Initialize the random number generator
	srand(time(0));

	// Build two arbirary ROW x COLUMN matrices
	for (int i = 0; i < ROWS; i++) {
		for (int j = 0; j < COLUMNS; j++) {
			a[i][j] = rand() % 10 + 1;
			b[i][j] = rand() % 10 + 1;
		}
	}
	
	// Print out the contents of the matrices
	cout << "The matrix 'a' has the values:  " << endl;
	for (int i = 0; i < ROWS; ++i) {
		cout << '\t';
		for (int j = 0; j < COLUMNS; j++) {
			cout << setw(4) << a[i][j];
		}
		cout << endl;
	}

	cout << "The matrix 'b' has the values:  " << endl;
	for (int i = 0; i < ROWS; ++i) {
		cout << '\t';
		for (int j = 0; j < COLUMNS; j++) {
			cout << setw(4) << b[i][j];
		}
		cout << endl;
	}
	
	cout << endl << endl << "Press enter to continue .... ";
	getline(cin, s, '\n');

	// Calculate the sum of the two ROW x COLUMN matrices
	for (int i = 0; i < ROWS; i++) {
		for (int j = 0; j < COLUMNS; j++) {
			sum[i][j] = a[i][j] + b[i][j];
		}
	}
	
	cout << "The sum of the matrices is:  " << endl;
	for (int i = 0; i < ROWS; ++i) {
		cout << '\t';
		for (int j = 0; j < COLUMNS; j++) {
			cout << setw(4) << sum[i][j];
		}
		cout << endl;
	}
    cout << endl << endl << "Press enter to continue .... ";
	getline(cin, s, '\n');

	return 0;
}