using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Your first number: ");

        int num1 = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Your second number: ");

        int num2 = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("_____________MENU____________");

        Console.WriteLine("1. a + b ");

        Console.WriteLine("2. a - b ");

        Console.WriteLine("3. a * b ");

        Console.WriteLine("4. a / b ");

        Console.WriteLine("5. None of the above options ");

        Console.WriteLine("____________________________ ");

        int option = Convert.ToInt32(Console.ReadLine());

        switch(option)

        {

            case 1:

                Console.WriteLine(num1 + num2);

                break;

            case 2:

                Console.WriteLine(num1 - num2);

                break;

            case 5:

                Console.WriteLine(num1 * num2);

                break;

            case 4:

                if (num2 != 0)

                {

                Console.WriteLine(num1 / num2);

                }

                break;

            default:

                Console.WriteLine(" Niciuna din optiuni a fost selectata");

                break;

        }

    }

}