using System;

public class Program

{

    public static void Main()

    {

        string[] key = {"B", "D", "A", "A", "C", "A", "B", "A", "C", "D"};  

        string[] stu = {"B", "D", "A", "A", "C", "A", "B", "E", "E", "E"}; 

        int correct = results(stu, key); 

        passfail(correct); 

    }  

    static int results(string[] stu, string[] key) 

    { 

        int correct = 0; 

        int incorrect = 0; 

        int total = 0; 

        for (int index = 0;index <key.Length; index++) 

        {  

            if (stu[index] == key[index]) 

            { 

                correct++; 

                Console.WriteLine("Question " + (index+1) + ": Your answer of " + stu[index] + " is correct.");  

            }

            else 

            { 

                incorrect++; 

                Console.WriteLine("Question " + (index+1) + ": Your answer of " + stu[index] + " is wrong."); 

            } 

        }

        total = correct + incorrect; 

        Console.WriteLine(" "); 

        Console.WriteLine("Your score is " + correct.ToString() + " out of " + total.ToString()); 

        return (correct);

    }

    static void passfail(int correct) 

    { 

        if (correct >=8) 

        { 

            Console.WriteLine ("Congratulations! You passed!"); 

        } 

        else 

        { 

            Console.WriteLine ("You did not pass. Please try again."); 

        } 

​

​

    }

} 

​