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#include <iostream>
#include <string>
#include <iomanip>
#include <climits>
using namespace std;
//Function Prototypes
int displayDrinksAndGetUserChoice(const string[], const double[], const int[], int);
int displayOPerationsAndGetUserChoice();
void updateBeverageQty(int, int[]);
void updateSoldBeverageQty(int, int[]);
void ComputeTotalProfit(const double[], int[], double[], int);
void DisplayTotalProfit(const string[], const double[], const int[], double[], int);
int getBestPerformer(const double[], const int);
int getWorstPerformer(const double[], int);
void displayBestDrink(const string[], const double[], const int[], double[], int);
void displayWorstDrink(const string[], const double[], const int[], double[], int);
int main()
{
const int MAX_NUM_DRINKS = 4;
int operation;
int index = 0;
string beverage[MAX_NUM_DRINKS] = { "Coca-Cola", "Sprite" , "Gatorade" , "Spring-Water" };
double price[MAX_NUM_DRINKS] = { /* Coca-Cola*/1.50, /*Sprite*/1.25, /*Gatorade*/2.25, /*Spring-Water*/ 1.85 };
int qtyOnHand[MAX_NUM_DRINKS] = {/* Coca-Cola*/20, /*Sprite*/20, /*Gatorade*/20, /*Spring-Water*/20 };
int qtySold[MAX_NUM_DRINKS] = { 0,0,0,0 };
double totalProfit[MAX_NUM_DRINKS];
int selectedDrink;
char userAnswer;
do
{
selectedDrink = displayDrinksAndGetUserChoice(beverage, price, qtyOnHand, MAX_NUM_DRINKS);
switch (selectedDrink)
{
case 1:
cout << "You selected: " << beverage[selectedDrink - 1] << endl;
updateBeverageQty(selectedDrink - 1, qtyOnHand);
updateSoldBeverageQty(selectedDrink - 1, qtySold);
break;
case 2:
cout << "You selected: " << beverage[selectedDrink - 1] << endl;
updateBeverageQty(selectedDrink - 1, qtyOnHand);
updateSoldBeverageQty(selectedDrink - 1, qtySold);
break;
case 3:
cout << "You selected: " << beverage[selectedDrink - 1] << endl;
updateBeverageQty(selectedDrink - 1, qtyOnHand);
updateSoldBeverageQty(selectedDrink - 1, qtySold);
break;
case 4:
cout << "You selected: " << beverage[selectedDrink - 1] << endl;
updateBeverageQty(selectedDrink - 1, qtyOnHand);
updateSoldBeverageQty(selectedDrink - 1, qtySold);
break;
default:
cout << "Please enter 1,2,3 or 4 only!" << endl;
}
cout << "Do you want to go again? (Y/n):";
cin >> userAnswer;
} while ((userAnswer == 'Y') || (userAnswer == 'y'));
do
{
operation = displayOPerationsAndGetUserChoice();
switch (operation)
{
case 1:
//calculate total profit
ComputeTotalProfit(price, qtySold, totalProfit, MAX_NUM_DRINKS);
DisplayTotalProfit(beverage, price, qtySold, totalProfit, MAX_NUM_DRINKS);
break;
case 2:
//Best
ComputeTotalProfit(price, qtySold, totalProfit, MAX_NUM_DRINKS);
index = getBestPerformer(totalProfit, MAX_NUM_DRINKS);
displayBestDrink(beverage, price, qtySold, totalProfit, index);
break;
case 3:
//worst
ComputeTotalProfit(price, qtySold, totalProfit, MAX_NUM_DRINKS);
index = getWorstPerformer(totalProfit, MAX_NUM_DRINKS);
displayWorstDrink(beverage, price, qtySold, totalProfit, index);
break;
case 4:
//Totals
ComputeTotalProfit(price, qtySold, totalProfit, MAX_NUM_DRINKS);
DisplayTotalProfit(beverage, price, qtySold, totalProfit, MAX_NUM_DRINKS);
break;
case 5:
default:
cout << "For operations please enter 1, 2, 3, or 4 only, key in 5 to exit" << endl;
}
} while (operation != 5);
system("PAUSE");
return 0;
}
//Function to get user choice
int displayDrinksAndGetUserChoice(const string drink[],
const double price[],
const int qty[],
int arrSize)
{
int userChoice = 0;
cout << "Welcome to COP 1334 Vending Machine" << endl;
cout << "Please choose from one of the following refreshing options\n" << endl;
cout << left;
// HEADER
cout << setw(23) << std::left << "-__DRINK NAME_________-"
<< setw(8) << std::left << "-___DRINK COST__"
<< setw(12) << std::left << "____NUMBER OF DRINKS IN MACHINE"
<< endl;
for (int i = 0; i < arrSize; i++)
{
cout << setw(1) << std::left << i + 1
<< setw(2) << std::left << ". "
<< setw(23) << std::left << drink[i]
<< setw(2) << std::left << "$"
<< setw(8) << std::left << price[i]
<< setw(12) << std::left << qty[i]
<< endl;
}
cout << "\nYour choice: ";
cin >> userChoice;
while (!cin || (userChoice < 1 || userChoice > 4))
{
cout << "Wrong input. Please enter values between 1 and 4 only:" << endl;
cin.clear();
std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
std::cout << "\nYour choice: ";
std::cin >> userChoice;
}
return userChoice;
}
//Function to make sure the user enters only valid money
bool isValidMoney = true;
while (isValidMoney == true)
{
double moneyAmount = 0;
double NICKLE = 0.05, DIME = 0.10, QUARTER = 0.25, DOLLAR = 1.00;
if moneyAmount = NICKLE == true
cout << "Enter an amount of money" << endl;
cout << "You need additional" << moneyAmount << " to purchase your drink" << endl;
cout << "Please enter either nickles, dimes, quaters, or dollars: " << endl;
}
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