PhotoAlbumTarea

Proposed exercise

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Create a class "PhotoAlbum" with a private attribute "numberOfPages."

It should also have a public method "GetNumberOfPages", which will return the number of pages.

The default constructor will create an album with 16 pages. There will be an additional constructor, with which we can specify the number of pages we want in the album.

Create a class "BigPhotoAlbum" whose constructor will create an album with 64 pages.

Create a test class "AlbumTest" to create an album with its default constructor, one with 24 pages, a "BigPhotoAlbum" and show the number of pages that the three albums have.

Output

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Solution

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using System;

class PhotoAlbum
{
    protected int numberOfPages;

    public PhotoAlbum()
    {
        numberOfPages = 16;
    }

    public PhotoAlbum(int numberOfPages)
    {
        this.numberOfPages = numberOfPages;
    }

    public int GetNumberOfPages()
    {
        return numberOfPages;
    }
}

class BigPhotoAlbum : PhotoAlbum
{
    public BigPhotoAlbum()
    {
        numberOfPages = 64;
    }
}

class AlbumTest
{
    static void Main()
    {
        bool debug = false;

        PhotoAlbum myAlbum1 = new PhotoAlbum();
        Console.WriteLine(myAlbum1.GetNumberOfPages());

        PhotoAlbum myAlbum2 = new PhotoAlbum(24);
        Console.WriteLine(myAlbum2.GetNumberOfPages());

        BigPhotoAlbum myBigPhotoAlbum1 = new BigPhotoAlbum();
        Console.WriteLine(myBigPhotoAlbum1.GetNumberOfPages());

        if (debug)
            Console.ReadLine();
    }
}