INFORMATION TECHNOLOGY
PAPER 1
GRADE 12 
NSC EXAM PAPERS AND MEMOS
NOVEMBER 2016

INSTRUCTIONS AND INFORMATION 

1. This paper is divided into THREE sections. Candidates must answer ALL  THREE sections.
2. The duration of this examination is three hours. Because of the nature of this  examination it is important to note that you will not be permitted to leave the  examination room before the end of the examination session.
3. This question paper is set with programming terms that are not specific to any  particular programming language (Delphi/Java (using the Netbeans IDE)).
4. Make sure that you answer the questions according to the specifications that  are given in each question. Marks will be awarded according to the set  requirements.
5. Answer only what is asked in each question. For example, if the question does  not ask for data validation, then no marks will be awarded for data validation.
6. Your programs must be coded in such a way that they will work with any data  and not just the sample data supplied or any data extracts that appear in the  question paper. 
7. Routines, such as search, sort and selection, must be developed from first  principles. You may NOT use the built-in features of a programming language  for any of these routines.
8. All data structures must be defined by you, the programmer, unless the data  structures are supplied. 
9. You must save your work regularly on the disk/CD/DVD/flash disk you have  been given, or on the disk space allocated to you for this examination session. 
10. Make sure that your examination number appears as a comment in every  program that you code, as well as on every event indicated.
11. If required, print the programming code of all the programs/classes that you  completed. You will be given half an hour printing time after the examination  session. 
12. At the end of this examination session you must hand in a disk/CD/DVD/flash  disk with all your work saved on it OR you must make sure that all your work  has been saved on the disk space allocated to you for this examination  session. Ensure that all files can be read.
13. The files that you need to complete this question paper have been given to you  on the disk/CD/DVD/flash disk or on the disk space allocated to you. The files  are provided in the form of password-protected executable files. 

NOTE:  

• Delphi candidates must use the file DelphiDataENGNov2016.exe.
• Java candidates must use the file JavaDataENGNov2016.exe. 

Do the following: 

• Double click on the password-protected executable file. 
• Click on the extract button. 
• Enter the following password: AquaS@&$16 
  Once extracted, the following list of files will be available in the folder  DelphiDataENGNov2016/JavaDataENGNov2016: 

DELPHI FILES                                                   JAVA (NETBEANS) FILES
Question1:                                                         Question1: 
Question1_P.dpr                                                 Question1.form                                                    
Question1_P.res                                                  Question1.java
Question1_U.dfm                                                 
Question1_U.pas 

Question2:                                                           Question2: 
DataQ2.txt                                                             DataQ2.txt  
Excursion_U.pas                                                   Excursion.java
Question2_P.dpr                                                    Question2.form
Question2_P.res                                                    Question2.java 
Question2_U.dfm 
Question2_U.pas 

Question3:                                                         Question3: 
Question3_P.dpr                                                 Question3.form
Question3_P.res                                                  Question3.java
Question3_U.dfm 
Question3_U.pas 

QUESTIONS

SECTION A 
QUESTION 1: GENERAL PROGRAMMING SKILLS 

Do the following: 

• Compile and execute the program found in the Question1 folder. The user  interface displays five different sections named Question 1_1 to Question 1_5. Currently the program has no functionality.  

Example of graphical user interface (GUI): 

• 1.1 Button [Question 1_1] Complete the code for each section of QUESTION 1, as described in  QUESTION 1.1 to QUESTION 1.5 on the next page. 

Write code to obtain the length, width and height of the tank from the text  boxes provided. Calculate and display the volume of the tank, using the  following formula: 

Volume = length x width x height 

Example of output if the length is 16.5 metres, the width is 14.2 metres and  the height is 12.5 metres: 
       (5) 
1.2 Button [Question 1_2] 
The aquarium pays for the water that will be used to fill up the tank. Use the  volume (in cubic metres) calculated in QUESTION 1.1 to calculate the cost of the water required to fill up the tank. 

Example of output if the volume is 2 928.75 cubic metres: 
(9) 

1.3 Button [Question 1_3] 
A shark can only stay in a tank for a specific period of time before it has to be  released. The user has to enter the lifespan of a shark in a tank in months. 
Write code to convert the number of months entered into years and months and display the years and months as shown in the example below. 
Example of output if the number of months that was entered is 87: 
(6)

1.4 Button [Question 1_4] 
The management wants to know how many years it will take to pay off the  initial expense of setting up the shark tank. The annual income earned will be  used to pay off the expense. The initial amount that was spent to set up the  shark tank and the expected income during the first year must be entered. 
After the first year of operation it is expected that the income will increase by  10% per year.  
Use the values entered to calculate and display the year number, the annual  income and the annual balance of the set-up cost. If the initial cost is paid off,  display the words 'Paid off' in the 'Balance' column. All monetary values must  be formatted to a currency with two decimal places. 
Example of output if the cost to set up the tank was R500 000 and the  expected income during the first year is R75 000: 
(14) 

1.5 Button [Question 1_5_1] 
There will be an opening day to celebrate the completion of the shark tank. Visitors who attend the opening day will get the opportunity to participate in  various fun activities. One of the activities is a dice game, during which the  visitor can win a swimming course or a snorkelling course if the numbers on  the two dice thrown are consecutive numbers.  
NOTE: Each dice has six faces. 
            Consecutive numbers are numbers that follow each other.  
Write code to do the following: 

• Generate two random numbers to simulate the throw of each dice and  display the numbers in the output area. 
• Enable button Question 1_5_2 and the two radio buttons if two  consecutive numbers were generated.

Example of output if the numbers generated are not consecutive:  

Example of output if the numbers generated are consecutive: 

Button [Question 1_5_2] 
Select one of the courses as a prize and write code to do the following: 

• Use a dialog box to enter the visitor's four-digit ticket number. This  number can be any four-digit number. 
• Extract the system date in any format. 
• Create a reference number in the following format: 
  <Ticket number>#<date>#<first two letters of the selected course as capital letters> 
  Example of output if the ticket number entered is 1028, the date is  19 October 2016 and the course selected is swimming:
  (8) 

TOTAL SECTION A: 50

SECTION B 
QUESTION 2: OBJECT-ORIENTATED PROGRAMMING 

Do the following: 

Related Items

• Compile and execute the program. Currently, the program has no functionality. A hidden panel called pnlAvailability will not be visible when the program is  executed and will be used in QUESTION 2.2.2 and QUESTION 2.2.3.  

Example of user interface:

• 2.1 The given incomplete object class (TExcursion/Excursion) contains the  declaration of four attributes and methods which describe an Excursion object. Complete the code for this program as specified in QUESTION 2.1 and  QUESTION 2.2 below. 

The attributes for the Excursion object are as follows: 

Complete the code in the given Excursion object class (TExcursion/Excursion)  as described in QUESTION 2.1.1 to QUESTION 2.1.5 below. 

2.1.1 Write a mutator method called setVisitDate to receive a date as  parameter and replace the current date to visit the aquarium with the  date received. (2) 
2.1.2 Write a method called requireTourGuide to return the word 'Yes' if a  tour guide is required, or 'No' if a tour guide is not required. (4) 
2.1.3 A maximum of 500 visitors are allowed to attend the aquarium  programme each day. The school will not be allowed to attend the  programme if there is no space available on the requested date.  
Write a method called isConfirmed that will receive the total number of  visitors already attending the programme on the requested date as a  parameter. The method must use the parameter value to determine  whether the maximum value of 500 visitors per day will be exceeded, or  not, if this school is allowed to attend the programme on the requested  date. Return a Boolean value of 'true' if the school is allowed to attend  the programme based on available space, or 'false' if not. (5) 
2.1.4 The park wants to encourage schools to attend the aquarium  programme by allowing free entrance to one learner for every ten  learners in the group.  
Write a method called calcAmount that will receive the cost per person  and the cost of a tour guide as parameters and calculate and return the  total amount to be paid. (7)
2.1.5 Complete the toString method to return the information about the  excursion in the following format: 

Example of output: 

2.2 An incomplete class Question2_U/Question2 is provided. Details of the  school applying to go on an excursion to visit the aquarium must be entered by the user. The program must determine whether the school can be  accommodated on the requested date and provide alternative dates if the  school cannot be accommodated on the requested date. 
A text file called DataQ2.txt contains information on all the schools that have  been accepted to attend the aquarium's educational programme. 
The text file will be used in QUESTION 2.2.2. 
The format of each line in the text file is as follows: 

<School name>#<Date of visit>#<Number of learners> 

The first four lines of the text file are as follows: 

2.2.1 Button [2.2.1 – Instantiate object] 
The user needs to enter the name of the school, select the date on  which they want to visit the aquarium from the list box and enter the  number of learners in the group. 
An Excursion object named objExcursion has been declared  globally. Write code to use the data that was entered to instantiate a  new Excursion object.  
Display a message using a dialog box to indicate that the object has  been instantiated successfully. (7)
2.2.2 Button [2.2.2 – Confirm availability] 

1. 1. Write a method called determineDayTotal that receives the  date that the school selected to visit the aquarium as a  parameter. Use the data saved in the DataQ2.txt text file to  determine and return the total number of visitors attending  the programme on the date received by the method. (12)
   2. Use the value of the day total determined by the  determineDayTotal method as a parameter and call the  isConfirmed method to determine whether the school can  be included for the aquarium programme on the selected  date, or not.
      If the school is allowed to visit the aquarium on the selected date, use the calcAmount method to calculate the amount  to be paid. 
      NOTE: The cost per person to visit the park and the cost to  hire a tour guide have been declared as constant  variables as part of the provided code. 
      Display the details of the school and the amount to be paid  using a message dialog box, as shown in the example  below. 
      

Display a message in a dialog box indicating no  availability.If the school cannot visit the aquarium on the selected date, do the following: 

• • Show the panel called pnlAvailability, which is  currently hidden.
  • Test all the dates in the list box for availability using the  determineDayTotal and the isConfirmed method.  Populate the combo box in the pnlAvailability panel  with the dates the school can visit the aquarium.
    Use the following school details to test the program: 

 School name: Hovener Secondary 
 Date of visit: 2016-11-15 
 Number of learners: 150 
 Tour guide: Yes 

Example of output if the school cannot be included on the  selected date of the visit: 

The combo box in the panel pnlAvailability populated with  all the dates on which the school can visit the aquarium, based on space available: 
(16) 

2.2.3 Button [2.2.3 – Confirm new date] 
If alternative dates are displayed in the combo box, the user must  select a date. The program must set the date of the object to the  selected date and display the school information together with the amount to be paid, using a message dialog box, as shown in the  example below. 

If there are no alternative dates displayed in the combo box, display  a message indicating that the school's request to go on the  excursion is unsuccessful. (5)

TOTAL SECTION B: 62

SECTION C 
QUESTION 3: PROBLEM-SOLVING PROGRAMMING 

Do the following: 

• Compile and execute the program in the Question3 folder. Currently, the program  has no functionality.  
• Complete the code for each question as described in QUESTION 3.1 to  QUESTION 3.4. 

Supplied GUI: 
The supplied GUI represents a self-help interface to assist visitors in reaching various  activities and facilities within the park.

Supplied data: 
You are provided with two parallel arrays and one two-dimensional array. 
arrActivities is a one-dimensional array that contains the names of activities and  facilities in the park. The data stored in this array are as follows:  

Water park, Aquarium, Sea, Restaurants, Shopping, Diving, Help desk, Penguin park, Shark tank, Dolphin shows 

A corresponding parallel array called arrCodes contains letters from the alphabet, each representing the corresponding activity/facility described in the arrActivities array. 
The arrCodes array contains the following elements: 

W, A, S, R, X, D, H, P, T, L 

The first element (letter W) in the arrCodes array represents the first element ('Water  park') in the arrActivities array, the second element (letter A) in the arrCodes array  represents the second element ('Aquarium') in the arrActivities array, and so on. 
arrActCodes is a two-dimensional array that contains a combination of codes that  represent activities and facilities that are accessible from a specific terminal when the  visitor departs in a specific direction. The codes contained in this array are as follows: 

NOTE: The row and column headings are not provided as part of the two-dimensional  array. 
Example: 
The activity code that applies when a visitor walks from Terminal 1 in a northerly  direction is DXWAT.  
Using the content of the arrCodes and arrActivities arrays, it can be established that  the activities and facilities that the code DXWAT refers to are Diving, Shopping, Water  park, Aquarium and Shark tank.  
NOTE: 

• You are NOT allowed to modify supplied data manually. Code must be written to  manipulate the supplied data according to the requirements. 
• The use of good programming techniques and modular design must be applied in  the design and coding of your solution.

3.1 Button [3.1 – Activity/Facility codes for all terminals and directions] 
The program must display the content of the two-dimensional array arrActCodes neatly in rows and columns. Display the directions as  column headings and the terminals as row labels. 
Example of output:
 (9) 
3.2 Button [3.2 – Activities/Facilities from a selected terminal and direction] 
The buttons that contain images must be used to select a terminal and  direction. Code is provided to assign the selected terminal and direction to  variables. The program must then use the supplied arrays to identify all the  activities and facilities available on the selected route. Display the selected terminal and direction as a heading and a list of activities and facilities on the  route selected. 
Example of output if Terminal 2 and South are selected: 
 (11) 
3.3 Button [3.3 – Access routes to selected activity/facility] 
Once the user selects a specific activity/facility from the combo box provided,  the user must be able to view all access routes to that specific activity/facility.  Display the terminal number and the direction for each access route for the  visitor to be able to reach the activity/facility selected. 
The total number of access routes leading to the activity selected must be  determined and displayed. 
Example of output if Aquarium was selected from the combo box:
 (10)
3.4 Button [3.4 – Maintenance at selected activity/facility] 
The area where activities take place or facilities are provided may sometimes  be closed due to maintenance. The user must select an activity/facility where  maintenance must take place from the combo box provided. The program  must remove all references to the selected activity/facility from the  two-dimensional array and display a suitable message in a dialog box  indicating that the information has been updated. The updated content of the  two-dimensional array must be displayed in the output area. 
Example of output if Diving was selected from the combo box: 

Example of output after removing the letter D from the two-dimensional array  arrActCodes due to maintenance that must be done on the diving facility: 
(8) 

TOTAL SECTION C: 38 
GRAND TOTAL: 150