using System;

public class Program

{

    public static void Main()

    {

        //basic calculator using switch

            Console.WriteLine("Enter Number1: ");

            int num1 = Convert.ToInt32(Console.ReadLine());

​

            Console.WriteLine("Enter the operation: (+,-,*,/)");

            char opreation = Convert.ToChar(Console.ReadLine());

​

            Console.WriteLine("Enter Number2: ");

            int num2 = Convert.ToInt32(Console.ReadLine());

​

            switch (opreation)

            {

                case '+':

                    {

                        Console.WriteLine("{0}+{1}={2}" , num1, num2, num1 + num2);

                        break;

                    }

                case '-':

                    {

                        Console.WriteLine("{0}-{1}={2}" , num1, num2, num1 - num2);

                        break;

                    }

                case '*':

                    {

                        Console.WriteLine("{0}*{1}{2}" , num1, num2, num1 * num2);

                        break;

                    }

                case '/':

                    {

                        Console.WriteLine("{0}/{1}={2}" , num1, num2, num1 / num2);

                        break;

                    }

                default:

                    Console.WriteLine("Unrecognized character");

                    break;

            }

    }

}