using System;

public class Program

{

    public static void Main()

    {

        char op;

            double first, second, result;

            Console.Write("Ievadiet pirmo ciparu: ");

            first = Convert.ToDouble(Console.ReadLine());

            Console.Write("ievadiet otro ciparu: ");

            second = Convert.ToDouble(Console.ReadLine());

            Console.Write("ievadiet kādu no dotajām darbībām (+, -, *, /): ");

            op = (char)Console.Read();

            switch(op)

            {

                case '+':

                    result = first + second;

                    Console.WriteLine("{0} + {1} = {2}", first, second, result);

                    break;

                case '-':

                    result = first - second;

                    Console.WriteLine("{0} - {1} = {2}", first, second, result);

                    break;

                case '*':

                    result = first * second;

                    Console.WriteLine("{0} * {1} = {2}", first, second, result);

                    break;

                case '/':

                    result = first / second;

                    Console.WriteLine("{0} / {1} = {2}", first, second, result);

                    break;

                default:

                    Console.WriteLine("Invalid Operator");

                    break;

            }

        }

    }

​

​