// JavaScript Example - Function to calculate total price
function calculateTotal(items) {
  // Calculate the sum of all item prices
  return items.reduce((sum, item) => {
    return sum + item.price * item.quantity;
  }, 0);
}

// Example usage
const shoppingCart = [
  { name: "Laptop", price: 999, quantity: 1 },
  { name: "Mouse", price: 25, quantity: 2 },
  { name: "Keyboard", price: 75, quantity: 1 }
];

const total = calculateTotal(shoppingCart);
console.log(`Total: $${total}`); // Output: Total: $1124

# Python Example - Function to calculate total price
def calculate_total(items):
    """
    Calculate the total price of all items in a shopping cart
    """
    total = 0
    for item in items:
        total += item['price'] * item['quantity']
    return total

# Example usage
shopping_cart = [
    {"name": "Laptop", "price": 999, "quantity": 1},
    {"name": "Mouse", "price": 25, "quantity": 2},
    {"name": "Keyboard", "price": 75, "quantity": 1}
]

total = calculate_total(shopping_cart)
print(f"Total: ${total}")  # Output: Total: $1124

    
    
    
    


    
Shopping Cart
    
    

        

            
Laptop
            
Price: $999
            
Quantity: 1
        
        
        

            
Mouse
            
Price: $25
            
Quantity: 2
        
        
        

            
Keyboard
            
Price: $75
            
Quantity: 1
        
        
        

            
Total: $1124
        
    
    
    

/* CSS for Shopping Cart */
body {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    color: #333;
    text-align: center;
}

.cart-container {
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 20px;
    background-color: #f9f9f9;
}

.cart-item {
    border-bottom: 1px solid #eee;
    padding: 15px 0;
}

.cart-item h3 {
    color: #0066cc;
    margin: 0 0 10px 0;
}

.cart-item p {
    margin: 5px 0;
    color: #555;
}

.cart-total {
    padding-top: 20px;
    text-align: right;
}

.cart-total h2 {
    color: #cc0000;
}

import java.util.ArrayList;
import java.util.List;

public class ShoppingCart {
    
    public static void main(String[] args) {
        // Create shopping cart items
        List cart = new ArrayList<>();
        cart.add(new Item("Laptop", 999, 1));
        cart.add(new Item("Mouse", 25, 2));
        cart.add(new Item("Keyboard", 75, 1));
        
        // Calculate and display total
        double total = calculateTotal(cart);
        System.out.println("Total: $" + total);  // Output: Total: $1124.0
    }
    
    /**
     * Calculate the total price of all items in the cart
     */
    public static double calculateTotal(List items) {
        double total = 0;
        for (Item item : items) {
            total += item.getPrice() * item.getQuantity();
        }
        return total;
    }
    
    // Item class
    static class Item {
        private String name;
        private double price;
        private int quantity;
        
        public Item(String name, double price, int quantity) {
            this.name = name;
            this.price = price;
            this.quantity = quantity;
        }
        
        public String getName() { return name; }
        public double getPrice() { return price; }
        public int getQuantity() { return quantity; }
    }
}

 "Laptop", "price" => 999, "quantity" => 1],
    ["name" => "Mouse", "price" => 25, "quantity" => 2],
    ["name" => "Keyboard", "price" => 75, "quantity" => 1]
];

$total = calculateTotal($shoppingCart);
echo "Total: $" . $total;  // Output: Total: $1124
?>

# Ruby Example - Function to calculate total price
def calculate_total(items)
  total = 0
  items.each do |item|
    total += item[:price] * item[:quantity]
  end
  total
end

# Example usage
shopping_cart = [
  { name: "Laptop", price: 999, quantity: 1 },
  { name: "Mouse", price: 25, quantity: 2 },
  { name: "Keyboard", price: 75, quantity: 1 }
]

total = calculate_total(shopping_cart)
puts "Total: $#{total}"  # Output: Total: $1124

using System;
using System.Collections.Generic;
using System.Linq;

namespace ShoppingCartExample
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create shopping cart items
            var shoppingCart = new List
            {
                new Item { Name = "Laptop", Price = 999, Quantity = 1 },
                new Item { Name = "Mouse", Price = 25, Quantity = 2 },
                new Item { Name = "Keyboard", Price = 75, Quantity = 1 }
            };
            
            // Calculate and display total
            decimal total = CalculateTotal(shoppingCart);
            Console.WriteLine($"Total: ${total}");  // Output: Total: $1124
        }
        
        /// 

        /// Calculate the total price of all items in the cart
        /// 
        static decimal CalculateTotal(List items)
        {
            // Using LINQ
            return items.Sum(item => item.Price * item.Quantity);
            
            // Alternative using foreach loop
            /*
            decimal total = 0;
            foreach (var item in items)
            {
                total += item.Price * item.Quantity;
            }
            return total;
            */
        }
    }
    
    // Item class
    class Item
    {
        public string Name { get; set; }
        public decimal Price { get; set; }
        public int Quantity { get; set; }
    }
}