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Billing Management System in C++

Creating a billing management system in C++ involves designing a program that can handle customer orders, calculate bills, and manage product information. Below is a simplified example of a billing management system in C++. Please note that this is a basic implementation and does not cover all the complexities that a real-world system would entail, such as a database for product information or user authentication.

C++
#include <iostream>
#include <vector>
#include <string>

using namespace std;

// Define a Product struct to represent products
struct Product {
    string name;
    double price;

    Product(const string& n, double p) : name(n), price(p) {}
};

// Define an Order struct to represent customer orders
struct Order {
    string productName;
    int quantity;

    Order(const string& n, int q) : productName(n), quantity(q) {}
};

// Function to calculate the total cost of an order
double calculateTotalCost(const vector<Product>& products, const vector<Order>& orders) {
    double totalCost = 0.0;

    for (const Order& order : orders) {
        for (const Product& product : products) {
            if (order.productName == product.name) {
                totalCost += order.quantity * product.price;
                break;
            }
        }
    }

    return totalCost;
}

int main() {
    vector<Product> products;
    vector<Order> orders;

    // Add some products to the system
    products.push_back(Product("Product1", 10.0));
    products.push_back(Product("Product2", 15.0));
    products.push_back(Product("Product3", 20.0));

    // Allow the user to create an order
    while (true) {
        string productName;
        int quantity;

        cout << "Enter product name (or 'exit' to finish): ";
        cin >> productName;

        if (productName == "exit") {
            break;
        }

        cout << "Enter quantity: ";
        cin >> quantity;

        orders.push_back(Order(productName, quantity));
    }

    // Calculate and display the total cost
    double totalCost = calculateTotalCost(products, orders);
    cout << "Total Cost: $" << totalCost << endl;

    return 0;
}

In this simplified example:

  1. We define a Product struct to represent products with a name and price.
  2. We define an Order struct to represent customer orders with a product name and quantity.
  3. The calculateTotalCost function calculates the total cost of the customer’s order by matching the products in the order with the products in the system.
  4. In the main function, we create a list of products and allow the user to create an order by entering product names and quantities.
  5. The program calculates and displays the total cost of the order.

This is a basic billing management system. In a real-world scenario, you would likely need to add more features such as customer information, product databases, and a more user-friendly interface.

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