using System;

public class Program

{

    public static void Main()

    {

        // 1) Ask cust for 2 numbers

        // 2) Store both nums in variables

        // 3) Next ask the user to press 1 for addition, 2 for multipication, 3 for subtraction and 4 for division

        // 4) Depending on the users response, give the user the correct answer.

        double number1;

        Console.WriteLine("What is your first number?");

        number1 = Convert.ToDouble(Console.ReadLine());

        double number2;

        Console.WriteLine("What is your second number?");

        number2 = Convert.ToDouble(Console.ReadLine());

        double selection;

        Console.WriteLine("Press 1 for addition, 2 for multipication, 3 for subtraction and 4 for division.");

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

        if(selection == 1)

        {

        Console.WriteLine("The sum of your numbers is " + number1 + number2);

        }

        else if(selection == 2)

        {

        Console.WriteLine("The multipication of your numbers is " + (number1 * number2));

        }

        else if(selection == 3)

        {

        Console.WriteLine("The subtraction of your numbers is " + (number1 - number2));

        }

        else if(selection == 4)

        {

        Console.WriteLine("The division of your numbers is " + (number1 / number2));

        }

        else

        Console.WriteLine("Error, please choose 1, 2, 3 or 4. Run program again."); 

    }

}