using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

//Written in Visual Studio

​

namespace NumberCalc

{

    internal class Program

    {

        static void Main(string[] args)

        {

            Console.WriteLine("Enter 2 numbers");

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

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

            Console.WriteLine("Pick an Opperator: Add(1), Subtract(2), Multiply(3), Divide(4)");

            int choice = int.Parse(Console.ReadLine());

            double result = 0;

            switch (choice)

            {

                case 1:

                    result = a + b;

                    break;

                case 2:

                    result = a - b;

                    break;

                case 3:

                    result = a * b;

                    break;

                case 4:

                    result = a / b;

                    break;

                default:

                    result = 0;

                    break;

            }

            Console.WriteLine($"The result was {result}");

            Console.ReadLine();

        }

    }

}

​