using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Type first number...");

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

        Console.WriteLine("Type *,/,+,-");

        string z = Console.ReadLine();

        Console.WriteLine("Type second number...");

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

        if (z == "+")

        {

            Console.WriteLine("Answer: {0}",x+y);

        }

        if (z == "-")

        {

            Console.WriteLine("Answer: {0}",x-y);

        }

        if (z == "*")

        {

            Console.WriteLine("Answer: {0}",x*y);

        }

        if (z == "/")

        {

            Console.WriteLine("Answer: {0}",x/y);

        }

​

    }

}