03. Orders - Dictionaries, Lambda and LINQ - Exercise

using System;
using System.Collections.Generic;

public class Program {
    public static void Main(string[] args) {
        Dictionary<string, (double price, int quantity)> products = new Dictionary<string, (double price, int quantity)>();

        string input = Console.ReadLine();
        while (input != "buy") {
            string[] tokens = input.Split(' ');
            string name = tokens[0];
            double price = double.Parse(tokens[1]);
            int quantity = int.Parse(tokens[2]);

            if (products.ContainsKey(name)) {
                products[name] = (price, products[name].quantity + quantity);
            }
            else {
                products[name] = (price, quantity);
            }
        }

        foreach (var product in products) {
            string name = product.Key;
            double totalPrice = product.Value.price * product.Value.quantity;
            //Console.WriteLine($"{name} -> {totalPrice:F2}");
            Console.WriteLine("{0} -> {1:F2}", name, totalPrice);
        }
        // Console.WriteLine();
        // foreach (var product in products) {
            // string name = product.Key;
            // double price = product.Value.price;
            // int quantity = product.Value.quantity;
            // // Console.WriteLine($"{name} {price:F2} {quantity}");
            // Console.WriteLine("{0} {1:F2} {2}", name, price, quantity);
        }
    }
}