Ordering System

A fastfood ordering system built with C++ that allows customers to select items, manage orders, and process payments.

Project Overview

The Fastfood Ordering System is designed to simulate a restaurant’s order management process. It allows users to view a menu, select food items, specify quantities, calculate totals, and process payments. This project highlights practical applications of structured programming, loops, and data handling in C++.

🍔 Fastfood Ordering System

🧾 Order Summary

Item	Qty	Price	Subtotal

Total: ₱0.00

💵 Payment

🧾 Receipt

No order yet.

🎥 Demonstration

This video demonstrates how the Fastfood Ordering System works — from choosing menu items to payment processing.

🧠 Conclusion

The Fastfood Ordering System project successfully demonstrates the practical application of C++ programming in simulating a real-world restaurant ordering process. By implementing structured programming, user input validation, and data management, the system efficiently handles menu selection, order tracking, and payment processing. This project highlights the importance of logical program flow and modular design, offering a clear understanding of how programming concepts translate into functional applications.

Project Impact

Educational Value: Strengthens understanding of core programming concepts, including functions, loops, arrays, and structs.
Practical Skills: Provides hands-on experience in creating functional software with real-world utility.
Efficiency & Accuracy: Automates order calculation and payment processing, reducing human errors in a simulated environment.
Portfolio Enhancement: Demonstrates capability to develop interactive and structured applications, showcasing technical proficiency for future academic or professional opportunities.

Project Goals

Simulate a Real-World Ordering System:Develop a system that allows users to select menu items, specify quantities, and complete orders just like in a fastfood restaurant.
Enhance Programming Skills:Apply C++ concepts such as structured programming, loops, functions, arrays, and structs in a practical project.
Automate Calculations:Automatically compute subtotals, total amounts, and change to reduce errors and demonstrate program logic.
Improve User Experience:Create an intuitive and interactive interface (console-based or web-integrated) that allows users to navigate and place orders efficiently.

Problems the Project Addresses

Manual Order Tracking:Many small restaurants or fastfood counters rely on manual order calculations, which can lead to mistakes. This system automates order computation.
Human Error in Payments:Miscalculations in totals and change can frustrate customers. The system ensures accurate payment processing.
Time Efficiency:Reduces the time needed to process orders by consolidating menu selection, quantity input, total computation, and payment into one flow.

Significance of the Project

Educational Significance:Helps students and novice programmers apply C++ concepts such as functions, arrays, loops, and structs in a real-world scenario, reinforcing practical programming skills.
Operational Significance:Demonstrates how an automated ordering system can improve efficiency in a fastfood setup by reducing manual errors and speeding up order processing.
Portfolio Value:Serves as a strong portfolio project, showcasing the ability to develop functional software with structured logic and user interaction.
Problem-Solving Significance:Provides a simple solution to common issues in small restaurant operations, such as miscalculations, slow service, and manual record-keeping.

Key Features

Interactive Menu Selection:Users can select from a predefined menu of items with prices displayed clearly.
Quantity and Subtotal Calculation:Automatically computes the subtotal for each item based on quantity.
Total and Change Calculation:Calculates total price of the order and determines correct change after payment.
Order Summary and Receipt:Displays a detailed order summary including item names, quantities, price, and subtotal, along with a receipt for reference.
Error Handling:Validates user input to prevent invalid selections and negative quantities.
Modular and Structured Code:Uses C++ functions and data structures for organized, maintainable code.

My Learning and Skills Applied

Working on the Fastfood Ordering System was a valuable learning experience. Through this project, I gained hands-on practice in C++ programming, particularly in using functions, loops, arrays, and structs to build a functional and interactive application. I learned how to structure a program logically so that it can handle multiple tasks, like menu selection, order calculation, and payment processing, all without errors.

I also strengthened my skills in problem-solving and debugging, as I had to anticipate user input errors and ensure the system responded correctly. Beyond coding, I practiced attention to detail and time management, because building a fully working system requires careful planning and testing.

Overall, this project allowed me to apply my theoretical knowledge in a practical way, and it gave me confidence in creating real-world applications that are both efficient and user-friendly.

My Reflection

Taking Introduction to Computer Programming has been a challenging yet fulfilling experience. At first, I found it overwhelming to understand the logic behind coding and how even a small error could affect an entire program. However, as the lessons progressed, I began to appreciate the importance of problem-solving, patience, and critical thinking. Writing code taught me that programming is not just about typing commands—it’s about understanding how computers think and how to make them perform tasks efficiently.

Through various exercises and projects, I learned the basics of algorithms, syntax, and debugging, which helped me build a stronger foundation for future programming courses. I also realized that collaboration and continuous learning are essential in this field since technology is always evolving. Overall, this subject helped me develop not only my technical skills but also my persistence and creativity in finding solutions.

In the end, Introduction to Computer Programming inspired me to see programming as more than an academic requirement—it’s a valuable tool for innovation and problem-solving that can make a real impact in the world.

C++ Source Code


#include 
#include 
#include 
#include 
using namespace std;

struct Item {
    string name;
    double price;
    int quantity;
};

vector orders;
double total = 0;

void menu() {
    cout << "\n\t\t\t+===================================+\n";
    cout << "\t\t\t       FASTFOOD MENU\n";
    cout << "\t\t\t 1. Beef Steak     Php 75.00\n";
    cout << "\t\t\t 2. Burger         Php 60.00\n";
    cout << "\t\t\t 3. Fried Chicken  Php 50.00\n";
    cout << "\t\t\t 4. Fries          Php 30.00\n";
    cout << "\t\t\t 5. Coke           Php 25.00\n";
    cout << "\t\t\t 6. CANCEL\n";
    cout << "\t\t\t+===================================+\n";
}

void order() {
    int choice;
    char again;

    cout << "\nEnter the number of the item you want to buy: ";
    cin >> choice;

    if (choice < 1 || choice > 6) {
        cout << "Invalid choice. Please choose between 1 to 6 only.\n";
        order();
        return;
    }

    if (choice == 6) {
        cout << "Order cancelled. Thank you!\n";
        exit(0);
    }

    int quantity;
    Item item;
    switch (choice) {
        case 1: item = {"Beef Steak", 75.00, 0}; break;
        case 2: item = {"Burger", 60.00, 0}; break;
        case 3: item = {"Fried Chicken", 50.00, 0}; break;
        case 4: item = {"Fries", 30.00, 0}; break;
        case 5: item = {"Coke", 25.00, 0}; break;
    }

    cout << "How many " << item.name << "(s) do you want to buy? ";
    cin >> quantity;

    item.quantity = quantity;
    total += item.price * item.quantity;
    orders.push_back(item);

    cout << "Do you want to buy again? (Y/N): ";
    cin >> again;

    if (toupper(again) == 'Y') {
        order();
    } else {
        // Display summary
        cout << "\n\n========== ORDER SUMMARY ==========\n";
        cout << left << setw(20) << "Item" 
             << setw(10) << "Qty" 
             << setw(10) << "Price" 
             << setw(10) << "Subtotal" << endl;
        cout << "-----------------------------------\n";

        for (auto &o : orders) {
            cout << left << setw(20) << o.name 
                 << setw(10) << o.quantity 
                 << setw(10) << fixed << setprecision(2) << o.price 
                 << setw(10) << o.price * o.quantity << endl;
        }

        cout << "-----------------------------------\n";
        cout << "TOTAL: Php " << fixed << setprecision(2) << total << endl;

        double pay;
        cout << "Enter payment amount: Php ";
        cin >> pay;

        if (pay < total) {
            cout << "Not enough payment! Please pay at least Php " << total << endl;
        } else {
            double change = pay - total;
            cout << "Change: Php " << fixed << setprecision(2) << change << endl;
        }

        cout << "\nThank you for ordering!\n";
    }
}

int main() {
    cout << "Welcome to the Fastfood Ordering System!" << endl;
    menu();
    order();

    cout << "\nDo you want to continue? (1 = Yes, 2 = No): ";
    int cont;
    cin >> cont;

    if (cont == 1) {
        orders.clear();
        total = 0;
        menu();
        order();
    } else {
        cout << "\nThank you for using the system!" << endl;
        cout << "Have a great day!\n";
    }

    return 0;
}

Pseudocode


START
  DECLARE Item struct with name, price, quantity
  DECLARE orders as a list of Item
  DECLARE total = 0

  FUNCTION menu():
    DISPLAY "FASTFOOD MENU"
    DISPLAY menu items with prices
    DISPLAY "Cancel" option

  FUNCTION order():
    GET user choice
    IF choice is invalid THEN
      DISPLAY "Invalid choice"
      RETURN
    END IF

    CREATE currentItem based on choice
    GET quantity for currentItem
    IF quantity <= 0 THEN
      DISPLAY "Quantity must be greater than zero"
      RETURN
    END IF

    ADD currentItem to orders list
    ADD (currentItem.price * currentItem.quantity) to total
    DISPLAY confirmation

  FUNCTION viewOrders():
    IF orders is empty THEN
      DISPLAY "No orders placed"
      RETURN
    END IF

    DISPLAY "YOUR ORDERS" header
    DISPLAY table headers: Item, Qty, Price, Subtotal
    FOR EACH item in orders:
      CALCULATE subtotal = item.price * item.quantity
      DISPLAY item details and subtotal
    END FOR
    DISPLAY total amount

  MAIN PROGRAM:
    DO:
      CALL menu()
      CALL order()
      GET user input for 'order again'
    WHILE user wants to order again

    CALL viewOrders()

    IF total > 0 THEN
      GET payment amount
      IF payment >= total THEN
        CALCULATE change = payment - total
        DISPLAY "Payment successful! Your change is " + change
        DISPLAY "Thank you for your order!"
      ELSE
        DISPLAY "Insufficient payment. Order cancelled."
      END IF
    END IF
END

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