using System;

public class Program

{

    public static void Main()

    {

            #region Variables

            int A_Number;

            int Another_Number;

            int Press;

            #endregion

​

            #region Menu

            Console.WriteLine("|----------------------------|");

            Console.WriteLine("|         Brainy             |");

            Console.WriteLine("|----------------------------|");

            Console.WriteLine("|Press  [1] => Addition      |");

            Console.WriteLine("|Press  [2] => Multiplication|");

            Console.WriteLine("|Press  [3] => Subtraction   |");

            Console.WriteLine("|Press  [4] => Division      |");

            Console.WriteLine("|----------------------------|");

            #endregion

​

            #region Control flow

            Console.WriteLine("enter A_Number"); 

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

            Console.WriteLine("enter Another_Number");

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

           Console.WriteLine("enter Press");

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

            if (Press == 1)

            {

                Console.WriteLine("{0}" + "+" + "{1}" + "is" + (A_Number + Another_Number) , A_Number, Another_Number);

            }

           else  if (Press == 2)

            {

                Console.WriteLine("{0}" + "*" + "{1}" + "is" + (A_Number * Another_Number) , A_Number, Another_Number);

            }

            else if (Press == 3)

            {

                Console.WriteLine("{0}" + "-" + "{1}" + "is" + (A_Number - Another_Number) , A_Number, Another_Number);

            }

           else  if (Press == 4)

            {

                Console.WriteLine("{0}" + "/" + "{1}" + "is" + (A_Number / Another_Number) , A_Number, Another_Number);

            }

            else

            { 

               Console.WriteLine("eRRoR : Your Option is not in the menu"); 

            }

            #endregion

​

    }

}