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  1. //Devin Scheu                                  CS1A                                    Chapter 7, P. 446, #9
  2. //
  3. /**************************************************************
  4. *
  5. * GRADE DRIVER'S LICENSE EXAM
  6. * ____________________________________________________________
  7. * This program determines if a student passed the driver's
  8. * license exam, the number of correct and incorrect answers,
  9. * and the questions answered incorrectly.
  10. * ____________________________________________________________
  11. * INPUT
  12. * studentAnswers : The student's answers for the 20 questions
  13. *
  14. * OUTPUT
  15. * passStatus : Whether the student passed or failed
  16. * correctCount : Number of correctly answered questions
  17. * incorrectCount : Number of incorrectly answered questions
  18. * incorrectQuestions : List of incorrectly answered question numbers
  19. *
  20. **************************************************************/
  21.  
  22. #include <iostream>
  23. #include <iomanip>
  24. #include <string>
  25.  
  26. using namespace std;
  27.  
  28. int main () {
  29.  
  30. 	//Variable Declarations
  31. 	const int NUM_QUESTIONS = 20;         //OUTPUT     - Number of questions on the exam
  32. 	char correctAnswers[NUM_QUESTIONS] = {'B', 'D', 'A', 'A', 'C', 'A', 'B', 'A', 'C', 'D', 
  33. 	                                      'B', 'C', 'D', 'A', 'D', 'C', 'C', 'B', 'D', 'A'};
  34. 	char studentAnswers[NUM_QUESTIONS];   //INPUT      - The student's answers for the 20 questions
  35. 	int correctCount = 0;                 //OUTPUT     - Number of correctly answered questions
  36. 	int incorrectCount;                   //OUTPUT     - Number of incorrectly answered questions
  37. 	string passStatus;                    //OUTPUT     - Whether the student passed or failed
  38. 	string incorrectQuestions;            //OUTPUT     - List of incorrectly answered question numbers
  39.  
  40. 	//Prompt for Input
  41. 	for (int i = 0; i < NUM_QUESTIONS; i++) {
  42. 		cout << "Enter answer for question " << (i + 1) << " (A/B/C/D): ";
  43. 		cin >> studentAnswers[i];
  44. 		studentAnswers[i] = toupper(studentAnswers[i]);
  45. 		while (studentAnswers[i] != 'A' && studentAnswers[i] != 'B' && studentAnswers[i] != 'C' && studentAnswers[i] != 'D') {
  46. 			cout << "\nError: Please enter A, B, C, or D: ";
  47. 			cin >> studentAnswers[i];
  48. 			studentAnswers[i] = toupper(studentAnswers[i]);
  49. 		}
  50. 		cout << studentAnswers[i] << endl;
  51. 	}
  52.  
  53. 	//Grade the Exam
  54. 	for (int i = 0; i < NUM_QUESTIONS; i++) {
  55. 		if (studentAnswers[i] == correctAnswers[i]) {
  56. 			correctCount++;
  57. 		}
  58. 	}
  59. 	incorrectCount = NUM_QUESTIONS - correctCount;
  60. 	passStatus = (correctCount >= 15) ? "Passed" : "Failed";
  61.  
  62. 	//Collect Incorrect Questions
  63. 	bool first = true;
  64. 	for (int i = 0; i < NUM_QUESTIONS; i++) {
  65. 		if (studentAnswers[i] != correctAnswers[i]) {
  66. 			if (!first) {
  67. 				incorrectQuestions += ", ";
  68. 			}
  69. 			incorrectQuestions += to_string(i + 1);
  70. 			first = false;
  71. 		}
  72. 	}
  73. 	if (incorrectQuestions.empty()) {
  74. 		incorrectQuestions = "None";
  75. 	}
  76.  
  77. 	//Separator and Output Section
  78. 	cout << "-------------------------------------------------------" << endl;
  79. 	cout << "OUTPUT:" << endl;
  80.  
  81. 	//Output Result
  82. 	cout << left << setw(25) << "Exam Status:" << right << setw(15) << passStatus << endl;
  83. 	cout << left << setw(25) << "Correct Answers:" << right << setw(15) << correctCount << endl;
  84. 	cout << left << setw(25) << "Incorrect Answers:" << right << setw(15) << incorrectCount << endl;
  85. 	cout << left << setw(25) << "Incorrect Questions:" << right << setw(15) << incorrectQuestions << endl;
  86.  
  87. } //end of main()
Success #stdin #stdout 0.01s 5320KB
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stdin
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stdout
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Enter answer for question 1 (A/B/C/D): B
Enter answer for question 2 (A/B/C/D): D
Enter answer for question 3 (A/B/C/D): A
Enter answer for question 4 (A/B/C/D): A
Enter answer for question 5 (A/B/C/D): C
Enter answer for question 6 (A/B/C/D): C
Enter answer for question 7 (A/B/C/D): B
Enter answer for question 8 (A/B/C/D): A
Enter answer for question 9 (A/B/C/D): C
Enter answer for question 10 (A/B/C/D): D
Enter answer for question 11 (A/B/C/D): B
Enter answer for question 12 (A/B/C/D): C
Enter answer for question 13 (A/B/C/D): D
Enter answer for question 14 (A/B/C/D): C
Enter answer for question 15 (A/B/C/D): D
Enter answer for question 16 (A/B/C/D): C
Enter answer for question 17 (A/B/C/D): D
Enter answer for question 18 (A/B/C/D): B
Enter answer for question 19 (A/B/C/D): D
Enter answer for question 20 (A/B/C/D): A
-------------------------------------------------------
OUTPUT:
Exam Status:                      Passed
Correct Answers:                      17
Incorrect Answers:                     3
Incorrect Questions:           6, 14, 17
https://ideone.com/y0pRYO
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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