07. Food Delivery

Добра практика:
using System;

namespace FoodDelivery
{
    class Program
    {
        static void Main()
        {
            double chickenMenuPrice = 10.35;
            double fishMenuPrice = 12.40;
            double vegeterianMenuPrice = 8.15;
            double delivery = 2.50;

            int chickenMenuCount = int.Parse(Console.ReadLine());
            int fishMenuCount = int.Parse(Console.ReadLine());
            int vegetarianMenuCount = int.Parse(Console.ReadLine());

            double menuPrice = chickenMenuCount * chickenMenuPrice + fishMenuCount * fishMenuPrice + vegetarianMenuCount * vegeterianMenuPrice;
            double dessertPrice = menuPrice / 5;
            double totalPrice = menuPrice + dessertPrice + delivery;

            Console.WriteLine(totalPrice);
        }
    }
}

Или леко тарикатската:
using System;

namespace FoodDelivery
{
    class Program
    {
        static void Main()
        {
            double chickenMenuPrice = int.Parse(Console.ReadLine()) * 10.35;
            double fishMenuPrice = int.Parse(Console.ReadLine()) * 12.40;
            double vegetarianMenuPrice = int.Parse(Console.ReadLine()) * 8.15;
            double delivery = 2.50;

            double menuPrice = chickenMenuPrice + fishMenuPrice + vegetarianMenuPrice;
            double totalPrice = menuPrice * 1.2 + delivery;

            Console.WriteLine(totalPrice);
        }
    }
}

Лоша практика:

using System;

namespace FoodDelivery
{
    class Program
    {
        static void Main()
        {
            Console.WriteLine((int.Parse(Console.ReadLine()) * 10.35 + int.Parse(Console.ReadLine()) * 12.40 + int.Parse(Console.ReadLine()) * 8.15) * 1.2 + 2.5);
        }
    }
}