using System;

​

namespace Calculator

{

    class Program

    {

        static void Main(string[] args)

        {

            while(true)

            {

                Console.Write("Please enter your first number: ");

                string numInput = Console.ReadLine();

                int firstNum = int.Parse(numInput);

​

                Console.WriteLine("Would you like to add (+), subtract (-), multiply (*), divide (/), or square (^)?");

                string action = Console.ReadLine();

​

                while (true)

                {

                    if (action == "+")

                    {

                        int output = firstNum + SecondNumKeeper();

                        Console.WriteLine(output);

                        break;

                    }

                    else if (action == "-")

                    {

                        int output = firstNum - SecondNumKeeper();

                        Console.WriteLine(output);

                        break;

                    }

                    else if (action == "*")

                    {

                        int output = firstNum * SecondNumKeeper();

                        Console.WriteLine(output);

                        break;

                    }

                    else if (action == "/")

                    {

                        int output = firstNum / SecondNumKeeper();

                        Console.WriteLine(output);

                        break;

                    }

                    else if (action == "^")

                    {

                        int output = firstNum * firstNum;

                        Console.WriteLine(output);

                        break;

                    }

                    else

                    {

                        Console.WriteLine("Please retype that.");

                    }

                }

                Console.WriteLine("Press Enter");

                Console.ReadLine();

                Console.Clear();

            }

        }

​

        public static int SecondNumKeeper()

        {

            Console.Write("Please enter your second number: ");

            string numInputTwo = Console.ReadLine();

            int secondNum = int.Parse(numInputTwo);

​

            return secondNum;

        }

    }

}

​