using System;

​

namespace Questionaire

{

    public class Program

    {

        // Create an Array containing 3 Multiple Choices question with 3 choices. 

        static string[, ] questionsWith3Choices = {/* Format: (question, 3 choices and correct answer) */

        {"What STI stands for?", "System Technology Institute", "Systems Technology Institution", "System Technology Institutes", "A"}, 

        {"Sinong pumatay kay Lapu-lapu?", "Magellan", "Superman", "Hindi ako", "B"}, 

        {"What do people from the Philippines call themselves?", "Filipino", "Pilipino", "Sana all", "C"}};

        // Create a method to display all three questions plus choices.

        public static void Display3Questions()

        {

            for (int rowIndex = 0; rowIndex < 3; ++rowIndex)

            {

                int idxColumn = rowIndex; // pick-up question           

                string question = questionsWith3Choices[idxColumn, 0];

                Console.WriteLine("{0}. {1}", (rowIndex + 1), question);

                // pick-up multiple choices...

                for (int colIndex = 1; colIndex < 4; ++colIndex)

                {

                    string choice = questionsWith3Choices[rowIndex, colIndex];

                    Console.WriteLine("   {0}. {1}", (char)('A' + colIndex - 1), choice);

                }

​

                Console.WriteLine(); // move to the next line

            }

        }

​

        // Create a method capable of displaying a specific question and its choices.

        public static void GetQuestion(int n)

        {

            int rowIndex = n - 1; // minus 1 to adhere to correct index of an array 

            if (rowIndex < 0)

                return; // validate row index if it's out of bound          

            string question = questionsWith3Choices[rowIndex, 0]; // get the question at specified index

            Console.WriteLine("{0}. {1}", n, question);

            for (int colIndex = 1; colIndex < 4; ++colIndex)

            {

                string choice = questionsWith3Choices[rowIndex, colIndex];

                Console.WriteLine("   {0}. {1}", (char)('A' + colIndex - 1), choice);

            }

​

            Console.WriteLine();

        }

​

        // Create a method that will display if an answer to an specific question is correct or not.

        public static bool IsAnswerCorrect(int n)

        {

            int rowIndex = n - 1;

            if (rowIndex < 0)

            { // validate row index if it's out of bound             

                Console.WriteLine("Error: IndexOutOfBound");

                return false;

            }

​

            Console.Write("Choose the correct answer (type letter only then, press Enter key): ");

            string answer = Console.ReadLine().ToUpper();

            // get the correct answer from question at specified index (4)

            string correctAnswer = questionsWith3Choices[rowIndex, 4];

            /* Console.WriteLine("for Question #{0}, comparing... (your answer) {1} vs {2} (correct answer)", n, answer, correctAnswer); */

            // return true or false according to comparison (case in-sensitive)

            return answer.Equals(correctAnswer, StringComparison.CurrentCultureIgnoreCase);

        }

​

        public static void Main(string[] args)

        {

            Display3Questions();

            Console.WriteLine("--- Pick-up random question among 3 questions provided. ---\n");

            int randomQuestion = 1 + new Random().Next(3); // 1 + generate random numbers between 0 and 2 

            GetQuestion(randomQuestion); // pick-up random question among 3 questions.

            if (IsAnswerCorrect(randomQuestion))

            {

                Console.WriteLine("Your answer is Correct!");

            }

            else

            {

                Console.WriteLine("Your answer is Incorrect!");

            }

        }

    }

}