gistfile1.txt

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace units_convertor
{
    class Program
    {
        static void Main(string[] args)
        {


            //m, mm, cm, mi, in, km, ft, yd

            var amount = double.Parse(Console.ReadLine());

            var unit = Console.ReadLine();
            var conversionUnit = Console.ReadLine();

            if (unit == "m" && conversionUnit == "m")
            {
                double type1 = amount / 1;


                double result = (type1 * 3.2808399);
                Console.WriteLine(result + " m");
            }
            else if (unit == "m" && conversionUnit == "mm")
            {


                double type2 = (amount * 1000) / 1;

                Console.WriteLine(type2);
            }
            else if (unit == "m" && conversionUnit == "cm")
            {
                double type2 = (amount * 100) / 1;

                Console.WriteLine(type2);
            }
            else if (unit == "m" && conversionUnit == "mi")
            {
                double type2 = (amount / 0.000621371192);

                Console.WriteLine(type2);
            }
            else if (unit == "m" && conversionUnit == "in")
            {
                double type2 = (amount * 39.3700787);

                Console.WriteLine(type2);
            }
            else if (unit == "m" && conversionUnit == "km")
            {
                double type2 = (amount / 1000);

                Console.WriteLine(type2);

            }
            else if (unit == "m" && conversionUnit == "ft")
            {
                double type2 = (amount * 3.2808399);

                Console.WriteLine(type2);
            }
            else if (unit == "m" && conversionUnit == "yd")
            {
                double type2 = (amount * 1.0936133);

                Console.WriteLine(type2);
            }
        }
    }
}