Module4SamsCoffeeShop.cpp

//************************************************************************
// Author: Rolando Carreon
// Date: mar 27 2025
// Language: C++
// Assignment: Module 4 Learning Outcome - Sams Coffee Shop Lab
// Description: a menu-driven program that will make the coffee shop
//              operationl.
//************************************************************************

#include<iostream>
#include<iomanip> // added for setprecision
using namespace std;

// Global Variables (constants)
double SMALL = 1.75;
double MEDIUM= 1.90;
double LARGE = 2.00;


// function prototypes
void shopHeader();

// displays main menu with choices for cashier
// passes grandTotal, revenue, and cup totals to main
void shopMenu(double& , double&, int& ,int& ,int& , int&);

// display coffee sales and totals for each size and grand total
void sellCoffee(double& ,int& ,int& ,int& , int&);

// display number of cups sold per size and profits
void soldCupsSize(double& ,int& ,int& ,int&);

// display the total number of cups sold
void soldTotal(int&);

// calculate and display 25% revenue of total sales
void profitTotal(double&, double&);

int main()
{
    // declare local initilized variables
    int smallTotal = 0;  // all parameters passed to main by functions called
    int mediumTotal = 0;
    int largeTotal = 0;
    int cupTotal = 0;
    double grandTotal = 0.0;
    double revenue = 0.0;
    
    
    // set precision to display by 2 decimal places from here on out
    cout << fixed << setprecision(2);
    
    // display main menu that the cashier needs to sell and view sale info
    shopMenu(grandTotal, revenue, smallTotal, mediumTotal, largeTotal , cupTotal);

    cout << "Successfully Quit the Menu!\n" << endl;
 
    
    return 0;
}


// function definitions

// header format displayed to organize the cashier user interface
void shopHeader()
{
    cout << "****************************************************" << endl;
    cout << "\t\t\t\tSam's Coffee Shop" << endl;
    cout << "****************************************************" << endl;
}


// main menu of the sam's coffee shop cashier terminal
// a loop to allow the cashier to continue to sell coffee or view sales
// information until they want to quit the program
// saves each sale and cup data to main total profit amount
void shopMenu(double& grandTotal, double& revenue, int& smallTotal,
              int& mediumTotal, int& largeTotal, int& cupTotal)
{
    int choice; // main menu choices
    
    // cashier chooses to sell coffee or view sales information until they
    // enter '5' to quit the program
    do {
        shopHeader(); // used to organize between seperate choice selections
        
        // display main coffee shop menu
        cout << "Please make a selection from the following Menu: " << endl;
        cout << "\t 1) Sell a Coffee\n"
             << "\t 2) Show Number of Cups Sold of each Size\n"
             << "\t 3) Show Total Amount of Coffee Sold\n"
             << "\t 4) Show Total Profit\n"
             << "\t 5) Quit Program\n\n";
        
        // prompt cashier to make menu selection
        cout << "Selection: ";
         cin >> choice;
        cout << endl;
        switch(choice)
        {
            case 1:  // sell coffee UI
                sellCoffee(grandTotal, smallTotal,
                           mediumTotal, largeTotal , cupTotal);
                break;
            case 2: // display cups sold per size UI
                soldCupsSize(grandTotal, smallTotal,
                             mediumTotal, largeTotal);
                break;
            case 3: // display total cups sold UI
                soldTotal(cupTotal);
                break;
            case 4: // display total profit UI
                profitTotal(grandTotal, revenue);
                break;
            case 5: // user selected quit
                shopHeader();
                cout << "GoodeBye!\n";
                break;
            default: // invalid input or choice number
                cout << "Not a valid choice.\n";
                cout << "Choose Again.\n";
                break;
        }  // end switch
            
    } while (choice != 5); // continue untill user selects 5 to quit
        
}

// a function to sell coffee allowing the cashier to select customer
// coffee size and amount choices in order to display total amount due
// saves each sale and cup data to shopMenu
void sellCoffee(double& grandTotal, int& smallTotal,
                int& mediumTotal, int& largeTotal, int& cupTotal)
{
    int choice; // sub menu choice
    
    // cup sizes to pick from
    int smallCups;
    int mediumCups;
    int largeCups;
    
    double currentTotal; // total value only for this current Sale
    
    // cashier chooses customer cup size choice and how many cups they want
    // displays dollar amount due to pay and repeats menu to continue to
    // sell coffee or press '4' to go back to main menu
    do {
        
        currentTotal = 0; // reset values after each sale to prevent dupli.
        smallCups = 0;
        mediumCups = 0;
        largeCups = 0;
        
        shopHeader();  // used to organize between seperate Sales
        
    // display coffee sales menu
    cout << "Option 1 - Sam's Coffee Shop Menu Choices: " << endl;
    cout << "\t1) Small Cup of Coffee  -  $" << SMALL << "\n"
         << "\t2) Medium Cup of Coffee -  $" << MEDIUM << "\n"
         << "\t3) Large Cup of Coffee  -  $" << LARGE << "\n"
         << "\t4) Go Back to Main Menu" << endl << endl;
        
    // prompt cashier to make menu selection
    cout << "Selection: ";
     cin >> choice;
    cout << endl;
        
    switch(choice)
    {
        case 1:  // small coffee
            cout << "How Many Cups of Small Coffee do You Need?: ";
            cin >> smallCups;
            cout << endl;
            
            currentTotal = smallCups * SMALL; // size x amount saves
            smallTotal += smallCups; // increments smalltotal by cups amount
            cupTotal += smallCups;
            
            cout << "Customer's Total Amount Due is: $" << currentTotal
                 << endl << endl;
            break;
            
        case 2: // medium coffee
            
            cout << "How Many Cups of Medium Coffee do You Need?: ";
            cin >> mediumCups;
            cout << endl;
            
            currentTotal = mediumCups * MEDIUM; // size x amount saves
            mediumTotal += mediumCups; // increments total by cups amount
            cupTotal += mediumCups;
            
            cout << "Customer's Total Amount Due is: $" << currentTotal
                 << endl << endl;
            break;
            
        case 3: // large coffee
            
            cout << "How Many Cups of Large Coffee do You Need?: ";
            cin >> largeCups;
            cout << endl;
            
            currentTotal = largeCups * LARGE; // size x amount saves
            largeTotal += largeCups; // increments total by cups amount
            cupTotal += largeCups;
            
            cout << "Customer's Total Amount Due is: $" << currentTotal;
            cout << endl << endl;
            break;
            
        case 4: // user selected quit
            break;
            
        default: // invalid input or choice number
            cout << "Not a valid choice.\n";
            cout << "Choose Again.\n";
            break;
            
    }  // end switch
        
        grandTotal += currentTotal;
    
    } while (choice != 4 ); // continue untill user selects 4 to quit
}


// displays easy to read coffee shop logistics data containing
// how much of each coffee size sold and the gross profit earned for each
// takes data passed from sellCoffee function and passes data to main
void soldCupsSize(double& grandTotal, int& smallTotal,
                  int& mediumTotal, int& largeTotal)
{
    int choice; // switch menu choice
    double smallMoneyTotal; // total money of each size sold
    double mediumMoneyTotal;
    double largeMoneyTotal;
    
    do {
        shopHeader(); // organize format for each new page
        
        cout << "Option 2 - Coffee Logistics Data" << endl << endl;
        
        smallMoneyTotal = smallTotal * SMALL;  // calcuate gross profit
        
        // display logisitic info about small coffee cups
        cout << "Small Coffee Cups: \n"
        << "\tTotal Cups Sold: " << smallTotal
        << "\n\tGross Total Profit: $" << smallMoneyTotal << endl << endl;
        
        mediumMoneyTotal = mediumTotal * MEDIUM;  // calcuate gross profit
        
        // display logisitic info about medium coffee cups
        cout << "Medium Coffee Cups: \n"
        << "\tTotal Cups Sold: " << mediumTotal
        << "\n\tGross Total Profit: $" << mediumMoneyTotal << endl << endl;
        
        largeMoneyTotal = largeTotal * LARGE; // calcuate gross profit
        
        // display logisitic info about large coffee cups
        cout << "Large Coffee Cups: \n"
        << "\tTotal Cups Sold: " << largeTotal
        << "\n\tGross Total Profit: $" << largeMoneyTotal << endl << endl;
        
        // menu choice
        cout << "\t1) Go Back to Main Menu" << endl << endl;
        
        // prompt cashier to make menu selection
        cout << "Selection: ";
         cin >> choice;
        cout << endl;
        
    } while (choice != 1); // repeat until '1' is chosen
    
}

// displays the total number of cups sold
void soldTotal(int& cupTotal)
{
    
    int choice;
    
    do {
        shopHeader(); // organize format for each new page
        
        cout << "Option 3 - Coffee Logistics Data" << endl << endl;
        
        // display logisitic info about coffee cups sold
        cout << "Total Amount of Coffee Cups Sold: " << cupTotal
             << endl << endl;
    
        // menu choice
        cout << "\t1) Go Back to Main Menu" << endl << endl;
        
        // prompt cashier to make menu selection
        cout << "Selection: ";
         cin >> choice;
        cout << endl;
        
    } while (choice != 1); // repeat until '1' is chosen
    
}

// calculates and displays 25% of the total sales as revenue
void profitTotal(double& grandTotal, double& revenue)
{
    
    int choice;
    
    do {
        shopHeader(); // organize format for each new page
        
        cout << "Option 4 - Coffee Logistics Data" << endl << endl;
        
        revenue = grandTotal * 0.25;
        
        // display logisitic info about revenue from all coffee cups
        cout << "Total Calculated Revenue (25%): $" << revenue
             << endl << endl;
    
        // menu choice
        cout << "\t1) Go Back to Main Menu" << endl << endl;
        
        // prompt cashier to make menu selection
        cout << "Selection: ";
         cin >> choice;
        cout << endl;
        
    } while (choice != 1); // repeat until '1' is chosen
    
}