// Monkey Business.
#include <iostream>
#include <iomanip>
using namespace std;

// constants
const int MONKEYS = 3;
const int DAYS = 7;

// function prototype.
void getFood(double arr[][DAYS], int rows);
void avgFood(double arr[][DAYS], int rows);
void leastAmount(double arr[][DAYS], int rows);
void greatestAmount(double arr[][DAYS], int rows);

int main()
{
	// declarations.
	double food[MONKEYS][DAYS];

	// header
	cout << "\tMonkey Business :::\n\n";
	cout << "Enter the food each monkey eats (in pounds) during the week.\n\n";

	// get food.
	getFood(food, MONKEYS);

	cout << "Report:\n";
	cout << "----------------------\n";

	// get average.
	avgFood(food, MONKEYS);

	// get least amount in that week.
	leastAmount(food, MONKEYS);

	// get greatest amount in that week.
	greatestAmount(food, MONKEYS);

	// End program.
	return 0;
}

//*******************************************************************
// getFood function
// Takes three arguments. It asks the user to enter the food in
// pounds that each monkey eats, for every day in a single week.
//*******************************************************************
void getFood(double arr[][DAYS], int rows)
{
	for (int nRows = 0; nRows < rows; nRows++)
	{
		cout << "Monkey " << (nRows + 1) << "\n";
		for (int nCols = 0; nCols < DAYS; nCols++)
		{
			cout << " Day " << (nCols + 1) << ": ";
			cin >> arr[nRows][nCols];
			// validate.
			while (arr[nRows][nCols] < 0)
			{
				cout << "ERROR: food cannot be lower than 0, try again: ";
				cin >> arr[nRows][nCols];
			}
		}
		// separate the fields.
		cout << endl;
	}
}

//*******************************************************************
// avgFood function
// Gets the average food each monkey eats during the week. It
// will then show a message on the screen.
//*******************************************************************
void avgFood(double arr[][DAYS], int rows)
{
	double total = 0;	// accumulator.

	cout << "Average food a day for " << MONKEYS;
	cout << " monkeys: ";

	for (int nRows = 0; nRows < rows; nRows++)
	{
		for (int nCols = 0; nCols < DAYS; nCols++)
			total += arr[nRows][nCols];
	}

	// set formatting.
	cout << fixed << setprecision(2);
	cout << (total / MONKEYS) << " pounds.\n" << endl;
}

//*******************************************************************
// leastAmount function
// Get from each monkey the least amount of food eaten
// during the week.
//*******************************************************************
void leastAmount(double arr[][DAYS], int rows)
{
	for (int nRows = 0; nRows < rows; nRows++)
	{
		double least = arr[0][0];
		int day = 0;	// accumulator.
		for (int nCols = 0; nCols < DAYS; nCols++)
		{
			if (arr[nRows][nCols] < least)
			{
				least = arr[nRows][nCols];
				day += (nCols + 1);
			}
		}
		cout << "On day " << day;
		cout << " monkey " << (nRows + 1);
		cout << " ate the least amount of food.\n";
	}
	// empty line
	cout << endl;	
}

//*******************************************************************
// greatestAmount function
// 
//*******************************************************************
void greatestAmount(double arr[][DAYS], int rows)
{
	for (int nRows = 0; nRows < rows; nRows++)
	{
		double greatest = arr[0][0];
		int day = 0;	// accumulator.
		for (int nCols = 0; nCols < DAYS; nCols++)
		{
			if (arr[nRows][nCols] > greatest)
			{
				greatest = arr[nRows][nCols];
				day += (nCols + 1);
			}
		}
		cout << "On day " << day;
		cout << " monkey " << (nRows + 1);
		cout << " ate the greatest amount of food.\n";
	}
	// empty line
	cout << endl;	
}