// This program demonstrates two-dimensional arrays.
// AUTHOR: Jim Etheredge
#include <iostream>
#include <iomanip>
#include <string>
using namespace std;

const int ROWS=3;
const COLUMNS=4;  // If the type isn't specified, C++ figures it out

// Function prototypes
// Notice missing name in first argument & the const qualifier
void max(const float [][COLUMNS], const string names[]);
void average(const float [][COLUMNS]);

int main()
{
  // Declare a two-dimensional array to hold sales data
  // Each row represents a salesperson. The array is initialized
  // with sales amounts.
  float sales[ROWS] [COLUMNS] = {{123.45, 987.65, 345.67, 999.87},
			        {111.11, 222.22, 333.33, 444.44},
			        {77.54, 234.99, 1.25, 777.77}};
  // A one-dimensional array of names
  string names[ROWS] = {"Jones", "Smith", "Davis"};

  max(sales, names);
  average(sales);
  return 0;
}
void max(const float sales[][COLUMNS], const string names[])
{
  int i, j, maxRow, maxColumn;
  float maxValue = 0.0;
  for (i = 0; i < ROWS; i++)
    for (j = 0; j < COLUMNS; j++)
      if (sales[i][j] > maxValue)
      {
        maxValue = sales[i][j];
        maxRow = i;
        maxColumn = j;
      };
  cout.setf(ios::left);
  cout.setf(ios::fixed, ios::floatfield);
  cout.setf(ios::showpoint);
  cout << names[maxRow] << " has the maximum sales value of "
       << setprecision(2) << sales[maxRow][maxColumn] << endl;
}
void average(const float sales[][COLUMNS])
{
  int i, j, maxRow, maxColumn;
  float total = 0.0, average;

  // Note that i and j are swapped this time
  for (j = 0; j < COLUMNS; j++)
    for (i = 0; i < ROWS; i++)
      total += sales[i][j];

  average = total / (ROWS + COLUMNS);
  cout << "The average sales value is "
       << setprecision(2)<< average << endl;
}