Juego de preguntas en C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

// max number of questions defined as macro
#define MAX_QUESTIONS 5

// Structure to store question details
typedef struct {
    char question[256];
    char options[4][64];
    int correct_option;
} Question;

// function to display question to the user
void displayQuestion(Question q)
{
    printf("%s\n", q.question);
    for (int i = 0; i < 4; i++) {
        printf("%d. %s\n", i + 1, q.options[i]);
    }
}

// function to check the answer
int checkAnswer(Question q, int user_answer)
{
    return (user_answer == q.correct_option);
}

// driver code
int main()
{

    // random number generator
    srand(time(NULL));

    // Initializing questions, options and the correct
    // answer
    Question original_questions[MAX_QUESTIONS] = {
        { "Which bird lays the largest egg?",
          { "Owl", "Ostrich", "Kingfisher", "Woodpecker" },
          2 },
        { "How many legs does a spider have?",
          { "7", "8", "6", "5" },
          2 },
        { "Where does the President of the United States "
          "live while in office?",
          { "The White House", "The Parliament",
            "House of Commons", "Washington DC" },
          1 },
        { "Which state is famous for Hollywood?",
          { "Sydney", "California", "New York", "Paris" },
          2 },
        { "What is a group of lions called?",
          { "Drift", "Pride", "Flock", "Drove" },
          2 }
    };

    // Array of struct data-type
    Question questions[MAX_QUESTIONS];
    memcpy(questions, original_questions,
           sizeof(original_questions));

    int num_questions = MAX_QUESTIONS;

    int score = 0;

    printf("Hola! Here's your Quiz Game!\n");

    for (int i = 0; i < MAX_QUESTIONS; i++) {
        int random_index = rand() % num_questions;
        Question current_question = questions[random_index];
        displayQuestion(current_question);

        int user_answer;
        printf("Enter your answer (1-4): ");
        scanf("%d", &user_answer);

        if (user_answer >= 1 && user_answer <= 4) {
            if (checkAnswer(current_question,
                            user_answer)) {
                printf("Correct!\n");
                score++;
            }
            else {
                printf("Incorrect. The correct answer is "
                       "%d. %s\n",
                       current_question.correct_option,
                       current_question.options
                           [current_question.correct_option
                            - 1]);
            }
        }
        else {
            printf("Invalid choice. Please enter a number "
                   "between 1 and 4.\n");
        }

        questions[random_index]
            = questions[num_questions - 1];
        num_questions--;
    }

    printf("Well Done Champ !!!! Quiz completed! Your "
           "score: %d/%d\n",
           score, MAX_QUESTIONS);

    return 0;
}