using System;

​

​

namespace ConsoleApp6

{

    public class Program{

        public static void Main(){

            int choice = int.Parse(Console.ReadLine());

            switch(choice){

                case 1:

            Console.Write("Inches = ");              

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

    var centimeters = inches * 2.54;

    Console.Write("Centimeters = ");

    Console.WriteLine(centimeters);

                    break;

                case 2:Console.Write("C = ");              

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

    var f = C * 1.8;

    Console.Write("F = ");

    Console.WriteLine(f);

                    break;

                case 3:Console.Write("Radian = ");              

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

    var gradusi = (radian * 180)/Math.PI;

    Console.Write("Gradusi = ");

    Console.WriteLine(gradusi);

                    break;

                case 4: Console.Write("Bgn = ");              

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

    var eur = bgn * 1.95583;

    Console.Write("Eur = ");

    Console.WriteLine(eur);

                    break;

    }}

}

}

​