using System;

using System.Collections.Generic;

using System.Linq;

using System.Security.Cryptography;

using System.Text;

using System.Threading.Tasks;

namespace Y1C6

{

    public class Program

    {

        public static void Main(string[] args)

        { 

            Console.WriteLine("Welcome to the super duper shmooper calculator");

​

            Console.Write("First Number: ");

            double operand1 = double.Parse(Console.ReadLine());

​

            Console.Write("Enter the operation: ");

            string operation1 = Console.ReadLine();

​

            Console.Write("Second Number: ");

            double operand2 = double.Parse(Console.ReadLine());

            Console.Write("Enter second operation: ");

            string operations2 = Console.ReadLine();

​

            Console.Write("Third Number: ");

            double operand3 = double.Parse(Console.ReadLine());

​

            double result = 0;

            if (operation1 == "+") 

            {

                result = operand1 + operand2;

            }

            else if (operation1 == "-")

            {

                 result = operand1 - operand2;

            }

            else if (operation1 == "*") 

            {

                result = operand1 * operand2;

            }

            else if (operation1 == "/") 

            {

                result = operand1 /  operand2;

            }

            else 

            {

                Console.WriteLine("Invalid Operation1...");

                Console.ReadLine();

                return;

            }

            if (operations2 == "+") 

            {

                Console.WriteLine(result + operand3);

            }

            else if (operations2 == "-") 

            {

                Console.WriteLine(result - operand3);

            }

            else if (operations2 == "*") 

            {

                Console.WriteLine(result * operand3);

            }

            else if (operations2 == "/") 

            {

                Console.WriteLine(result / operand3);

            }

            else 

            {

                Console.WriteLine("Invalid Operation2...");

                Console.ReadLine();

                return;

            }

​

            Console.ReadLine();

        }

    }

}