Quiz

/* Name: Jason Cameron  
   Date: 2024-07-08   Purpose of program: To create a quiz program that asks the user a series of questions and provides feedback on their answers. */  
public class Summative {  
    // Constant for the total number of questions  
    private static final int NUM_QUESTIONS = 6;  
  
    // Array to hold the Question objects  
    static Question[] questions = new Question[NUM_QUESTIONS];  
  
    // Method to populate the quiz questions  
    private static void addQuestions() {  
        questions[0] = new Question("What is the capital of Canada?", "Ottawa", new String[]{"Toronto", "Ottawa", "Vancouver", "Montreal"});  
        questions[1] = new Question("What is the capital of France?", "Paris", new String[]{"Lyon", "Paris", "Marseille", "Nice"});  
        questions[2] = new Question("What is the capital of Japan?", "Tokyo", new String[]{"Osaka", "Kyoto", "Yokohama", "Tokyo"});  
        questions[3] = new Question("What is the capital of the United States?", "Washington D.C.", new String[]{"New York", "Los Angeles", "Chicago", "Washington D.C."});  
        questions[4] = new Question("What is the course code for this class?", "ICS3U", new String[]{"ICS3U", "ICS4U", "ICS3C", "ICS4C"});  
        questions[5] = new Question("What is the creator of this quiz's name?", "Jason", new String[]{"John", "Jason", "James", "Jack"});  
    }  
  
    public static void main(String[] args) {  
        addQuestions();  
        int score = 0;  
  
        for (Question question : questions) {  
            System.out.println(question.question); // Display the question  
  
            // Display the answer options dynamically            for (int i = 0; i < question.options.length; i++) {  
                System.out.println(i + ": " + question.options[i]);  
            }  
  
            System.out.print("Enter your answer: ");  
            String answer = System.console().readLine().strip();  
  
            // Check if the answer is correct (either the string itself or the corresponding option index)  
            if (answer.equalsIgnoreCase(question.answer) ||  
                    isCorrectIndex(answer, question)) {  
                System.out.println("Correct!");  
                score++;  
            } else {  
                System.out.println("Incorrect! The correct answer is " + question.answer);  
            }  
        }  
  
        // Calculate and display the final score  
        float finalScore = (float)  Math.round(((float) score / NUM_QUESTIONS) * 1000) / 10;  
        System.out.println("You got " + score + " out of " + NUM_QUESTIONS + " questions correct. Your score is " + finalScore + "%");  
    }  
  
    // Helper function to check if the answer is a valid index and correct  
    private static boolean isCorrectIndex(String answer, Question question) {  
        try {  
            int answerIndex = Integer.parseInt(answer);  
            // Check if the index is within bounds and the corresponding option is correct  
            return (answerIndex >= 0 && answerIndex < question.options.length &&  
                    question.options[answerIndex].equalsIgnoreCase(question.answer));  
        } catch (NumberFormatException e) {  
            return false; // Not a valid number  
        }  
    }  
}  
  
// Class to represent a quiz question  
class Question {  
    String question;      // The question text  
    String answer;        // The correct answer  
    String[] options;     // Array of answer choices  
  
    // Constructor    public Question(String question, String answer, String[] options) {  
        this.question = question;  
        this.answer = answer;  
        this.options = options;  
    }  
}

Flow

graph TD
    A["Start"] --> B["addQuestions()"]
    B --> C["score = 0"]
    C --> D{"For each question in questions"}
    D -->|Yes| E["Print question"]
    E --> F["For each option in question"]
    F -->|Yes| G["Print option"]
    G --> F
    F -->|No| H["Get user's answer (input)"]
    H --> I{"Is answer correct?"}
    I -->|Yes| J["Print 'Correct'"]
    J --> K["score++"]
    K --> D
    I -->|No| L["Print 'Incorrect'"]
    L --> D
    D -->|No| M["Calculate and print final score"]
    M --> N["End"]

Output

What is the capital of Canada?
0: Toronto
1: Ottawa
2: Vancouver
3: Montreal
Enter your answer: 0
Incorrect! The correct answer is Ottawa
What is the capital of France?
0: Lyon
1: Paris
2: Marseille
3: Nice
Enter your answer: Paris
Correct!
What is the capital of Japan?
0: Osaka
1: Kyoto
2: Yokohama
3: Tokyo
Enter your answer: tokyo
Correct!
What is the capital of the United States?
0: New York
1: Los Angeles
2: Chicago
3: Washington D.C.
Enter your answer: 3
Correct!
What is the course code for this class?
0: ICS3U
1: ICS4U
2: ICS3C
3: ICS4C
Enter your answer: 0
Correct!
What is the creator of this quiz's name?
0: John
1: Jason
2: James
3: Jack
Enter your answer: 1
Correct!
You got 5 out of 6 questions correct. Your score is 83.3%