C#-The local driver\'s license office has asked you to create an application tha

Question

C#-The local driver's license office has asked you to create an application that grades the written portion of the driver's license exam. The exam has 20 multiple choice questions. Here are the correct answers: 1. B 2. D 3. A 4. A 5. C 6. A 7. B 8. A 9. C 10. D 11. B 12. C 13. D 14. A 15. D 16. C 17. C 18. B 19. D 20. A Your program should store these correct answers in an array. The program should read the student's answer's for each of the 20 questions from a text file and store teh answers in an another array. (Create your own text file to test the application). After the student's answers have been read from the file, the program should display a message indicating whether the student passed or failed the exam. (A student must correctly answer 15 of the 20 questions to pass the exam). It should then display the total number of correctly answered questions, the total number of incorrectly answered questions, and a list showing the question numbers of the incorrectly answered questions.

Explanation / Answer

using System;
class Program
   {
static void Main()
       {
       int counter = 0,correct_ans=0,wrong_ans=0,;
       char [] result = new char[20];
       char [] stu_ans = new char[20];
       result = {'B','D','A','A','C','A','B','A','C','D','B','C','D','A','D','C','C','B','D'};
       char line;
       System.IO.StreamReader file = new System.IO.StreamReader("input.txt");
       while((line = file.ReadLine()) != null)
           stu_ans[counter++]=line;
       file.Close();
       while(result[counter] != null)
           {
           if(result[counter] == stu_ans[counter])
               {
               correct_ans++;
               counter++;
               }
           else
               {
               wrong_ans++;
               counter++;
               }
           }
       if(correct_ans >= 15)
           Console.WriteLine (" Passed!");
       else
           Console.WriteLine (" Failed!");
       Console.WriteLine (" Number of Correct answer: " + correct_ans);
       Console.WriteLine (" Number of incorrect answer: " + wrong_ans);
       Console.WriteLine (" Below is the incorrect question numbers.");          
       counter=0;
       while(result[counter] != null)
           {
           if(result[counter] != stu_ans[counter])
               {
               Console.WriteLine (counter);
               counter++;
               }
           }
       }
   // Suspend the screen.
   Console.ReadLine();
   }

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