Untitled

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'MCQ Test App',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MCQTestScreen(),
    );
  }
}

class MCQTestScreen extends StatefulWidget {
  @override
  _MCQTestScreenState createState() => _MCQTestScreenState();
}

class _MCQTestScreenState extends State<MCQTestScreen> {
  int _currentQuestionIndex = 0;
  int _score = 0;

  final List<Map<String, dynamic>> _questions = [
    {
      'question': 'What is the capital of France?',
      'options': ['Berlin', 'Madrid', 'Paris', 'Rome'],
      'correctAnswer': 'Paris',
    },
    {
      'question': 'Which planet is known as the Red Planet?',
      'options': ['Earth', 'Mars', 'Jupiter', 'Saturn'],
      'correctAnswer': 'Mars',
    },
    {
      'question': 'Who wrote "To Kill a Mockingbird"?',
      'options': ['Harper Lee', 'Mark Twain', 'J.K. Rowling', 'Ernest Hemingway'],
      'correctAnswer': 'Harper Lee',
    },
  ];

  void _answerQuestion(String selectedAnswer) {
    if (selectedAnswer == _questions[_currentQuestionIndex]['correctAnswer']) {
      setState(() {
        _score++;
      });
    }

    if (_currentQuestionIndex < _questions.length - 1) {
      setState(() {
        _currentQuestionIndex++;
      });
    } else {
      _showResultDialog();
    }
  }

  void _showResultDialog() {
    showDialog(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: Text('Test Result'),
          content: Text('Your score is $_score out of ${_questions.length}.'),
          actions: [
            TextButton(
              onPressed: () {
                Navigator.of(context).pop();
                setState(() {
                  _currentQuestionIndex = 0;
                  _score = 0;
                });
              },
              child: Text('Restart'),
            ),
          ],
        );
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('MCQ Test'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            Text(
              _questions[_currentQuestionIndex]['question'],
              style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
            ),
            SizedBox(height: 20),
            ...(_questions[_currentQuestionIndex]['options'] as List<String>).map((option) {
              return ElevatedButton(
                onPressed: () => _answerQuestion(option),
                child: Text(option),
              );
            }).toList(),
            SizedBox(height: 20),
            Text(
              'Question ${_currentQuestionIndex + 1} of ${_questions.length}',
              textAlign: TextAlign.center,
              style: TextStyle(fontSize: 16),
            ),
          ],
        ),
      ),
    );
  }
}