//Rextester.Program.Main is the entry point for your code. Don't change it.

//Microsoft (R) Visual C# Compiler version 2.9.0.63208 (958f2354)

​

using System;

​

namespace Rextester

{

    public class Program

    {

        public static void Main(string[] args)

        {

            Console.WriteLine("Please enter the maximum number of questions");

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

            int mx = -1;

            while (mx < 2 || mx > 9) {

                Console.WriteLine("Please enter an integer value between 2 and 9 (max number of alphabetic characters to be sorted)");

                mx = Convert.ToInt32(Console.ReadLine());

            }

            int correct = 0;

            String[] questions = new String[questionsCnt + 1];

            String[] answers = new String[questionsCnt + 1];

            for (int i = 1; i <= questionsCnt; i++) {

                Console.WriteLine("=================================");

                Console.WriteLine("Question : " + i);

                Console.WriteLine("What is the correct order of following characters:");

                Random random = new Random();

                char[] str = new char[mx];

                for (int j = 0; j < mx; j++) {

                    str[j] = Convert.ToChar(random.Next(65, 90));

                    Console.Write(str[j]);

                }

                questions[i] = new String(str);

                Console.WriteLine();

                answers[i] = Console.ReadLine();

                if (questions[i] == answers[i]) correct++;

            }

            while (true) {

                Console.WriteLine("\nTo get the number of right answers, type 1");

                Console.WriteLine("To get the number of wrong answers, type 2");

                Console.WriteLine("To view all the questions with correct and answered responses, type 3");

                Console.WriteLine("To exit, type exit");

                String ch = Console.ReadLine();

                if (ch == "exit") break;

                if (ch == "1")

                    Console.WriteLine("The number of right answers is : " + correct);

                else if (ch == "2")

                    Console.WriteLine("The number of wrong answers is : " + (questionsCnt - correct));

                else if (ch == "3") {

                    Console.WriteLine("Question       User Answer      Correct");

                    Console.WriteLine("=======================================");

                    for (int i = 1; i <= questionsCnt; i++) {

                        String res = questions[i];

                        Array.Sort(res.ToCharArray());

                        Console.WriteLine(questions[i] + "              " + answers[i] + "       " + res);

                    }

                }

            }

        }

    }

}