05. Small Shop

РЕШЕНИЕ СЪС SWITCH:

using System;
namespace SmallShop
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string product = Console.ReadLine();
            string town = Console.ReadLine();
            double quantity = double.Parse(Console.ReadLine());
            double sum = 0;

            switch (town)
            {
                case "Sofia":
                    switch (product)
                    {
                        case "coffee":
                            sum = 0.5;
                            break;
                        case "water":
                            sum = 0.8;
                            break;
                        case "beer":
                            sum = 1.2;
                            break;
                        case "sweets":
                            sum = 1.45;
                            break;
                        case "peanuts":
                            sum = 1.6;
                            break;
                    }
                    break;
                case "Plovdiv":
                    switch (product)
                    {
                        case "coffee":
                            sum = 0.4;
                            break;
                        case "water":
                            sum = 0.7;
                            break;
                        case "beer":
                            sum = 1.15;
                            break;
                        case "sweets":
                            sum = 1.3;
                            break;
                        case "peanuts":
                            sum = 1.5;
                            break;
                    }
                    break;
                case "Varna":
                    switch (product)
                    {
                        case "coffee":
                            sum = 0.45;
                            break;
                        case "water":
                            sum = 0.7;
                            break;
                        case "beer":
                            sum = 1.1;
                            break;
                        case "sweets":
                            sum = 1.35;
                            break;
                        case "peanuts":
                            sum = 1.55;
                            break;
                    }
                    break;
            }
            Console.WriteLine(sum * quantity);
        }
    }
}

РЕШЕНИЕ СЪС IF-ELSE:

using System;
namespace SmallShop
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string product = Console.ReadLine();
            string town = Console.ReadLine();
            double quantity = double.Parse(Console.ReadLine());
            double sum = 0;

            if (town == "Sofia")
            {
                if (product == "coffee")
                {
                    sum = 0.5;
                }
                else if (product == "water")
                {
                    sum = 0.8;
                }
                else if (product == "beer")
                {
                    sum = 1.2;
                }
                else if (product == "sweets")
                {
                    sum = 1.45;
                }
                else if (product == "peanuts")
                {
                    sum = 1.6;
                }
            }
            else if (town == "Plovdiv")
            {
                if (product == "coffee")
                {
                    sum = 0.4;
                }
                else if (product == "water")
                {
                    sum = 0.7;
                }
                else if (product == "beer")
                {
                    sum = 1.15;
                }
                else if (product == "sweets")
                {
                    sum = 1.3;
                }
                else if (product == "peanuts")
                {
                    sum = 1.5;
                }
            }
            else if (town == "Varna")
            {
                if (product == "coffee")
                {
                    sum = 0.45;
                }
                else if (product == "water")
                {
                    sum = 0.7;
                }
                else if (product == "beer")
                {
                    sum = 1.1;
                }
                else if (product == "sweets")
                {
                    sum = 1.35;
                }
                else if (product == "peanuts")
                {
                    sum = 1.55;
                }
            }

            Console.WriteLine(sum * quantity);
        }
    }
}

РЕШЕНИЕ С ТЕРНАРЕН ОПЕРАТОР:

using System;
namespace SmallShop
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string product = Console.ReadLine();
            string town = Console.ReadLine();
            double quantity = double.Parse(Console.ReadLine());

            double sum = product == "coffee" ? (town == "Sofia" ? 0.5 : town == "Plovdiv" ? 0.4 : town == "Varna" ? 0.45 : 0) :
                         product == "water" ? (town == "Sofia" ? 0.8 : town == "Plovdiv" ? 0.7 : town == "Varna" ? 0.7 : 0) :
                         product == "beer" ? (town == "Sofia" ? 1.2 : town == "Plovdiv" ? 1.15 : town == "Varna" ? 1.1 : 0) :
                         product == "sweets" ? (town == "Sofia" ? 1.45 : town == "Plovdiv" ? 1.3 : town == "Varna" ? 1.35 : 0) :
                         product == "peanuts" ? (town == "Sofia" ? 1.6 : town == "Plovdiv" ? 1.5 : town == "Varna" ? 1.55 : 0) : 0;

            Console.WriteLine(sum * quantity);
        }
    }
}