CSharpOperatorsGame

using System;

class CSharpOperatorsGame
{
    static string[] rightAnswer = new string[8];
    static string[] calcAnswer(int levelOfOperator, int arreyIndexOfAnswer, string[,] question)
    {
        for (int i = 0; i < 8; i++)
        {
            if (levelOfOperator == int.Parse(question[1,i]))
            {
                rightAnswer[arreyIndexOfAnswer] = question[0, i];
                arreyIndexOfAnswer++;
            }
        }
        levelOfOperator--;
        if (arreyIndexOfAnswer < 8)
        {
            calcAnswer(levelOfOperator, arreyIndexOfAnswer, question);
        }
        return rightAnswer;
    }
    static void Main()
    {
        string[,] dataBase =
        {
            {"x.y", "f(x)", "a[x]", "x++", "x--", "new", "typeof", "checked", "unchecked", "default", "delegate", "+x", "-x", "!x", "~x", "++x", "--x", "(T)x", "true", "false", "sizeof", "*", "/", "%", "+", "-", "<<", ">>", "<", "<=", ">", ">=", "is", "as", "==", "!=", "&", "^", "|", "&&", "||", "??", "?:", "=", "*=", "/=", "%=", "+=", "-=", "<<=", ">>=", "&=", "^=", "|=", "=>"},
            {"14", "14", "14", "14", "14", "14", "14", "14", "14", "14", "14", "13", "13", "13", "13", "13", "13", "13", "13", "13", "13", "12", "12", "12", "11", "11", "10", "10", "9", "9", "9", "9", "9", "9", "8", "8", "7", "6", "5", "4", "3", "2", "1", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0"},
            {"1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0"},
        };
        string[,] question = new string[3, 8];
        string [] temp = new string [8];
        string input = "";
        string answer = "";
        string checkString = "";
        int numberOfRightToLeft = 0;
        int result = 0;
        Random randomOperator = new Random();
        for (int y = 1; y <= 25; y++)
        {
            numberOfRightToLeft = 0;
            for (int i = 0; i < 8; i++)
            {
                int random = randomOperator.Next(0, 55);
                for (int a = 0; a < 3; a++)
                {
                    question[a, i] = dataBase[a, random];
                }
            }
            calcAnswer(14, 0, question);
            for (int i = 0; i < 8; i++)
            {
                if (question[2, i] == "0")
                {
                    numberOfRightToLeft++;
                }
            }
            for (int i = 1; i <= numberOfRightToLeft; i++)
            {
                temp[8 - i] = rightAnswer[7 - numberOfRightToLeft + i];
            }
            for (int i = 8 - numberOfRightToLeft; i < 8; i++)
            {
                rightAnswer[i] = temp[i];
            }
            Console.WriteLine();
            Console.WriteLine("Question N{0}:\n", y);
            for (int i = 0; i < 8; i++)
            {
                Console.WriteLine("Operator N{0}: {1}", i + 1, question[0, i]);
            }
            input = "";
            while (input.Length < 8)
            {
                Console.WriteLine();
                Console.WriteLine("Enter your answer (example: 36812457):");
                input = Console.ReadLine();
            }
            answer = "";
            checkString = "";
            for (int i = 0; i < 8; i++)
            {
                answer += rightAnswer[i];
                checkString += question[0, int.Parse(Convert.ToString(input[i])) - 1];
            }
            if (answer == checkString)
            {
                Console.WriteLine("Correct!!!");
                result++;
            }
            else
            {
                Console.WriteLine("Inncorrect!!!");
                Console.Write("Correct answer is: ");
                Console.Write(rightAnswer[0] + " ");
                for (int i = 1; i < 8; i++)
                {
                    Console.Write(",  {0} ", rightAnswer[i]);
                }
                Console.WriteLine("\n");
            }
        }
        Console.WriteLine();
        Console.WriteLine("Your result is: " + result);
        Console.ReadLine();
    }
}