C# Tutorial "Final Exam for Beginner Course" : Task 7

Final Exam for Beginner Course

Task 7

Please modify the entry point method to declare an instance of the Survey type. After the declaration, add two text questions to the survey of your choice.

Next, after the two question declarations, create a new local declaration that returns the result of the GetScore method.

Finally, print the message "Your score: {Score}" to the Console using WriteLine, where {Score} is the score obtained from the survey.

using System;
using System.Collections.Generic;

public class Program
{
    public static void Main()
    {

    }
}

public abstract class Answer
{
    public int Score { get; set; }
}

public abstract class Question
{
    public string Label { get; set; }

    protected abstract Answer CreateAnswer(string input);

    protected virtual void PrintQuestion()
    {
        Console.WriteLine(Label);
    }

    public Answer Ask()
    {
        PrintQuestion();

        string input = Console.ReadLine();

        return CreateAnswer(input);
    }
}

public class TextAnswer : Answer
{
    public string Text { get; set; }
}

public class TextQuestion : Question
{
    protected override Answer CreateAnswer(string input)
    {
        return new TextAnswer { Text = input, Score = input.Length };
    }
}

public class Survey
{
    public Survey(string title)
    {
        Title = title;
        Questions = new List<Question>();
    }

    public string Title { get; set; }

    public List<Question> Questions { get; private set; }

    public void AddQuestion(Question question)
    {
        Questions.Add(question);
    }

    public int GetScore()
    {
        int total = 0;
        foreach (Question question in Questions)
        {
            Answer answer = question.Ask();
            total = total + answer.Score;
        }

        return total;
    }
}