#include <iostream>
#include <iomanip>
//#include <string>

using namespace std;

// This assignment is worth 5 points
// -1 if constants were not used
// -1 if column width control wasn't implemented

const string
	item_a = "Juicy Fruit",
	item_b = "Doritos",
	item_c = "Pop-Tarts",
	item_d = "Beef Jerky";
const float
	item_a_cost = 0.55,
	item_b_cost = 0.90,
	item_c_cost = 1.35,
	item_d_cost = 1.50;
const int width = item_a.length() + 4;

int dollars, quarters, dimes, nickels;
const float dol = 1, q = 0.25, d = 0.1, n = 0.05;

char selection;
string item;
float cost, money_available;
bool valid_flag = true;

int main()
{
	cout << "Items available: " << endl << left << setprecision(2) << fixed
	     << setw(width) << "A. " + item_a << "| $" << item_a_cost << endl
	     << setw(width) << "B. " + item_b << "| $" << item_b_cost << endl
	     << setw(width) << "C. " + item_c << "| $" << item_c_cost << endl
	     << setw(width) << "D. " + item_d << "| $" << item_d_cost << endl;

	cout << "Please insert money ($1, 0.25, 0.10, 0.05): ";
	cin >> dollars >> quarters >> dimes >> nickels;
	cout << "Make an item selection: ";
	cin >> selection;

	switch(selection)
	{
		case 'A':
		case 'a':	// Optional. Ignores case sensitivity.
			item = item_a;
			cost = item_a_cost;
			break;
		case 'B':
		case 'b':
			item = item_b;
                        cost = item_b_cost;
			break;
		case 'C':
		case 'c':
			item = item_c;
                        cost = item_c_cost;
			break;
		case 'D':
		case 'd':
			item = item_d;
                        cost = item_d_cost;
			break;
		default:
			cout << "Invalid selection. Money returned.\n";
			valid_flag = false;
			break;
	}

	money_available = dol*dollars + q*quarters + d*dimes + n*nickels;

	if(valid_flag)
		if(money_available > cost)
			cout << item
			     << " dispensed, please gather your change of $"
			     << money_available - cost << '.' << endl;
		else if(money_available == cost)
			cout << item
			     << " dispensed, there is no change." << endl;
		else
			cout << "Insufficient funds. Money returned." << endl;

	cout << "Have a nice day!" << endl;

	return 0;
}