//Nathan Dominguez                    CSC5                 Chapter 7, P. 446, #9
//
/*******************************************************************************
 * 
 * Display Driver Exam Results
 * _____________________________________________________________________________
 * The program will compute the number of correct and incorrect answers of the 
 * exam, and display the number of questions answered incorrectly, correctly, if
 * the user pass or failed the exam, and which questions were answered 
 * incorrectly.
 * _____________________________________________________________________________
 * INPUT 
 * student[grade]          : student's choice
 * size			           : holds size for arrays
 * key[i]		           : key to compare for correct answers
 * 
 * OUTPUT
 * correct                  : number of correct answers
 * incorrect                : number of incorrect answers
 * wrongNumber[questions]   : holds questions with incorrect answers
 * 
 ******************************************************************************/
#include <iostream>
#include <iomanip>
using namespace std;
 
int main()
{
	const int size = 20;     //array size
	char key[size] = {'B', 'D', 'A', 'A', 'C', 'A', 'B', 'A', 'C', 'D', 'B', 
			'C', 'D', 'A', 'D', 'C', 'C', 'B', 'D', 'A'};    //array list
	char choice[size];        //answer chosen
	int correct = 0;          //OUTPUT - number of answers chosen correctly
	int incorrect = 0;        //OUTPUT - number of answers chosen incorrectly
	int incorrectQ[size];     //number of incorrect questions stored
  //
  //loop program 20 times
for (int i = 0; i < size; i++)
{
	cout << "what is your choice for question " << (i+1) << "?: ";
	cin  >> choice[i];
	while (choice[i] != 'A' && choice[i] != 'B' 
		&& choice[i] != 'C' && choice[i] != 'D')
	{
		//display error message
		cout << endl << "Invalid entry, please try again." << endl;
		cin  >> choice[i];
	}
	cout << choice[i] << endl;
    //compute which answers and correct and incorrect
	if (choice[i] == key[i])
		correct++;
	else
	{
		incorrect++;
		incorrectQ[incorrect-1] = (i+1);
	}
}
 //ouput passed for failed
if (correct >= 15)
	cout << "EXAM PASSED" << endl;
else
	cout << "EXAM FAILED" << endl;
 //ouput final scores
cout << "amount correct: " << correct << endl;
cout << "amount incorrect: " << incorrect << endl;
cout << "incorrect questions: ";
for (int i = 0; i < incorrect; i++)
{
	cout << incorrectQ[i] << ", ";
}
return 0;
}
 

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B D A D C A B D C A B C A C D C C B D A