Question $3$

Use Qt$$s model$/$view framework to store and display music CD information. The following information should be stored in the model $($a QStandardItemModel$)$:

$$ composer,

$$ album name,

$$ replacement value, and

$$ a rating $($out of $100).$

The information should be displayed in a table.

The following functionality should be included.

$$ There should be a header row.

$$ The user should be able to add rows of data to the model.

$$ The replacement value should always display the cents $($even as $\mathrm{.}00).$

$$ Use a delegate to display the rating as a horizontal bar. This column should take up all the remaining space available.

$$ The user should be able to sort the data by clicking on the column header on which the sorting should be implemented.

$$ Where the replacement value is greater than or equal to R$200,$ the row should be made a different colour. Note that this colour should also change if the user edits a replacement value $($and it should return to the normal colour if the value drops below R$200).$

$$ The user should be able to delete a row of data.

Here is an example of the interface.

Question $4$

Write an application that uses regular expressions to check for telephone numbers and email addresses in a text file provided by a user. The following functionality should be included.

$$ The user should be able to select the file to check using a standard file open dialog box.

$$ The file should be displayed in the GUI.

$$ The telephone numbers and email addresses should be highlighted$/$emphasized in some way in the text.

An email address can be identified by a single @ symbol in the address; telephone numbers could be from any of the following formats:

$000-000-0000$

$000-0000000$

$0000000000$

$(000)000-0000$

$(000)0000000$

You may assume that the email addresses and telephone numbers are free standing, that is$,$ they do not have brackets $($or any other character$)$ around them.

See an example below.