//εφαρμογή switch-case με Read.key

// https://docs.microsoft.com/en-us/dotnet/api/system.console.readkey?view=netframework-4.7.2

using System;

​

public class Program

{

    public static void Main()

    {

​

        Console.WriteLine("Please type grade: ");

        ConsoleKeyInfo grade;

        char g;

        //grade = Convert.ToChar(Console.ReadLine());

        grade = Console.ReadKey();

​

        g = grade.KeyChar;

        g = Char.ToUpper(g);

        switch (g)

        {

            case 'A':

                Console.WriteLine(" ---> Excellent");

                break;

            case 'B':

                Console.WriteLine(" ---> Very Good");

                break;

            case 'C':

                Console.WriteLine(" ---> Good");

                break;

            case 'D':

                Console.WriteLine(" ---> Bad");

                break;

            case 'F':

                Console.WriteLine(" ---> Very bad");

                break;

            default:

                Console.WriteLine(" ---> Illegal grade");

                break;

        }

​

    }

}