Your downloadable files for Chapter $12$ include DEBUG$12-01.$txt$,$ DEBUG$12-02.$txt$,$ DEBUG$12-03.$txt$,$ and DEBUG$12-04.$jpg$.$ Each file starts with some comments that describe the problem. Comments are lines that begin with two slashes $(//).$ Each file contains pseudocode or a flowchart that has mistakes. Find and correct all the bugs.

DEBUG$12-01.$ txt

$//$ This is a Label class.

$//$ It defines a label that can appear on a GUI screen.

class Label

Declarations

private string text

private num horizontalPosition

private num verticalPosition

public void setText$()$

text $=$ message

return

public void setPosition$($x$,$ y$)$

horizontalPosition $=$ x

verticalPosition $=$ x

return x

endClass

DEBUG$12-02.$txt

$//$ This program creates a screen with a button.

$//$ When the user clicks the button, a label displays "Hello".

start

Declarations

Screen screen$1=$ new Screen$()$

Button helloButton $=$ new Button$()$

Label helloLabel $=$ new Label$()$

screen$1.$setSize$(200,200)$

helloButton.setText$($Click to see a greeting$)$

helloButton.registerListener$($greetingMethod$())$

helloLabel.setText$("$Hello$")$

screen$1.$add$($helloLabel$)$

stop

greetingMethod$()$

return

DEBUG$12-03.$txt

$//$ This program creates a screen with a textbox and a button.

$//$ When the user clicks the button, a label displays the result

$//$ which is $10\%$ of the number in the textbox.

start

Declarations

Screen screen$1=$ new Screen$()$

Button calcButton $=$ new Screen$()$

Textbox usersEntry $=$ new TextBox$()$

Label result

screen$1.$setSize$(200,200)$

calcButton.setText$("$Click to calculate $10\%$ tax"$)$

screen$1.$add$($usersEntry$)$

screen$1.$add$($button$)$

stop

calculateTax$()$

Declarations

Label result $=$ new Label$()$

num tax

num RATE $=0\mathrm{.}10$

string answer

tax $=$ usersEntry.getText$()*$ RATE

answer $=$ "The tax is $",$ tax

result.setText$()$

screen$1.$add$($result$)$

return

DEBUG$12-04.$jpg

$//$ These storyboard sketches have been created for an interactive program that accepts customers'

drink orders and displays a price. The user makes choices and a price is calculated based on type and

size of drink and applicable tax. An object dictionary appears below the storyboard sketches. Correct

the bugs.

Regular

Diet