/*
 * Write a program called average2d.cc that:
 *
 * 1. Reads in a 4 x 4 matrix of integers from the user
 * 2. Computes the average of each column in the matrix
 * 3. Displays the average of each column in the matrix
 *
 * For example:
 *
 * Enter row 0
 * 1 2 3 4
 * Enter row 1
 * 5 6 7 8
 * Enter row 2
 * 9 8 7 6
 * Enter row 3
 * 5 4 3 2
 * Averages:
 * 5 5 5 5
 */
#include <iostream>
using namespace std;

const int N = 4;

int
main()
{
    float numbers[N][N];
    float avgcol[N] = {0, 0, 0, 0};
    int i, j;

    // Get the numbers
    for (i = 0; i < N; i++) {
	cout << "Enter row " << i << endl;
	for (j = 0; j < N; j++) {
	    cin >> numbers[i][j];
	}
    }

    // Compute the averages
    for (i = 0; i < N; i++) {
	for (j = 0; j < N; j++) {
	    avgcol[i] += numbers[j][i];
	}
	avgcol[i] /= N;
    }

    // Display the averages
    cout << "Averages:" << endl;
    for (i = 0; i < N; i++) {
	cout << avgcol[i] << " ";
    }
    cout << endl;

    return (0);
}