/* Drivers license exam program to grade a 20 question test
*Put all the correct answers in 1 array, all the users answers in another
*compare arrays for # of correct answers
**student must get 15 out of 20 to pass
*tells student in this order
**Did they pass
**total number of correct questions
**total number of incorrect questions
**list showing the numbers of the questions that were wrong
*/

/*
***ANSWERS 
//can only accept ABC or D as an answer
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
*/

#include <iostream>
#include <iomanip>
#include <string>
using namespace std;

int main()
{
	const int QUESTIONS = 20;        //1    2    3    4    5    6    7    8    9    10   11   12   13  14  15     16   17   18  19   20
	char correctAnswers[QUESTIONS] = {'B', 'D', 'A', 'A', 'C', 'A', 'B', 'A', 'C', 'D', 'B', 'C', 'D', 'A', 'D', 'C', 'C', 'B', 'D', 'A'};
	//number of questions is 20 in the test, and then we store the answers in an array
	char studentAnswers[QUESTIONS];
	bool badEntry = false;
	int answeredCorrectly = 0;
	//we use char right & wrong to compare against since if we try to compare against 'A' it'll compare incorrectly
	const char wrong = 'X', right = '.', A = 'A', B = 'B', C = 'C', D = 'D';

	//now we use a for loop to go through the questions and store whether the answer was right or wrong
	/*for (int x = 0; x < QUESTIONS;)
	{
		cout << "Please enter the answer for question #" << (x + 1) << endl;
		cin >> studentAnswers[x];
		if (studentAnswers[x] != A || B)
		{
			badEntry = true;
			while (badEntry = true)
			{
				cout << "Invalid entry, please enter A, B, C, or D" << endl;
				cin >> studentAnswers[x];
				if (studentAnswers[x] == A || B)
					badEntry = false;
			}
		}
	}*/


	//here's where we check for an invalid entry
		
	//stores the answer and replaces the students answer with whether it was right or wrong
		if (studentAnswers[x] == correctAnswers[x])
		{
			answeredCorrectly++;
			studentAnswers[x] = '.';
		}
		else
			studentAnswers[x] = 'X';		
		x++;	
	}
	//now that we have cycled through all the questions and gotten the answers, heres the info we have
	//questions have been entered
	//judged whether they were right or wrong
	//stored Y or N in the studentAnswer array so we can tell them which questions were wrong
	//now we just output all of it
	/*
	**Did they pass
	**total number of correct questions
	**total number of incorrect questions
	**list showing the numbers of the questions that were wrong
	*/
	//need to use strcmp to compare the char arrays
	if (answeredCorrectly >= 15)
	cout << endl << "Congratulations, you passed!" << endl << endl;
	if (answeredCorrectly < 15)
	cout << endl << "You failed, better work on those pipe laying skills!" << endl << endl;

	cout << "You got " << answeredCorrectly << " questions right." << endl;
	cout << "You got " << (20 - answeredCorrectly) << " questions wrong." << endl << endl;
	cout << "The questions you got wrong were" << endl;
	for (int y = 0; y < QUESTIONS; y++)
	{
		if (studentAnswers[y] == wrong)
			cout << "Question " << (y + 1 ) << ": " << studentAnswers[y] << endl;
		//if (studentAnswers[y] = 'N')
		//cout << "Question " << (y + 1) << endl; 
	}
	cout << "Please press any key then hit enter to exit" << endl;
	cin >> answeredCorrectly;
}