01. Data Types

using System;

namespace _01._Data_Types
{
    class Program
    {
        static void Main(string[] args)
        {
            string dataType = Console.ReadLine();

            switch (dataType)
            {
                case "int":
                    int valueInt = int.Parse(Console.ReadLine());
                    DoType(valueInt);
                    break;
                case "real":
                    double valueDouble = double.Parse(Console.ReadLine());
                    DoType(valueDouble);
                    break;
                case "string":
                    string valueString = Console.ReadLine();
                    DoType(valueString);
                    break;
            }
        }

        static void DoType(int valueInt)
        {
            Console.WriteLine(valueInt*2);
        }
        static void DoType(double valueDouble)
        {
            Console.WriteLine($"{valueDouble * 1.50:f2}");
        }
        static void DoType(string valueSring)
        {
            Console.WriteLine($"${valueSring}$");
        }
    }
}