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A music album is a compilation of many songs recorded by one artist - NSC Information Technology - Question 3 - 2024 - Paper 1

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A music album is a compilation of many songs recorded by one artist. Music albums are evaluated after every 10 weeks to determine the number of points earned, based ... show full transcript

Worked Solution & Example Answer:A music album is a compilation of many songs recorded by one artist - NSC Information Technology - Question 3 - 2024 - Paper 1

Step 1

3.2.1 - Instantiate album object

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Answer

To instantiate the album object, extract the album title and artist name from the user interface:

var
  albumTitle: string;
  artistName: string;
begin
  albumTitle := InputBox('Enter Album Title', 'Album Name:', '');
  artistName := InputBox('Enter Artist Name', 'Artist Name:', '');
  objAlbum := TAlbum.Create(albumTitle, artistName);
end;

Step 2

3.2.2 - Calculate points

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Answer

To calculate points, call the updatePoints method using three integer arguments:

objAlbum.updatePoints(albums, downloads, streams);
LabelPoints.Caption := IntToStr(objAlbum.getPoints);

Step 3

3.2.3 - Set ranking

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Answer

Extract the number of weeks from the input dialog and convert it to an integer:

var
  numWeeks: Integer;
begin
  numWeeks := StrToInt(InputBox('Enter the Number of Weeks', 'Weeks:', ''));
  objAlbum.setRanking(numWeeks);
end;

Step 4

3.2.4 - Display album details

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Answer

To display the album details, utilize the toString method and the determineStatus method:

RichEditDetails.Lines.Add(objAlbum.toString);
objAlbum.determineStatus;
RichEditDetails.Lines.Add('Status: ' + objAlbum.status);

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