PROVINCIAL EXAMINATION INFORMATION TECHNOLOGY PAPER 1 JUNE 2015 GRADE 11

Transcription

1 PROVINCIAL EXAMINATION INFORMATION TECHNOLOGY PAPER 1 JUNE 2015 GRADE 11 TIME: 3 hours MARKS: 150 Copy Right reserved

2 This question paper consists of 10 pages. Copy Right reserved

3 2 MP/June 2015 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. 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 only 4. 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. 5. 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. 6. 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. 7. All data structures must be defined by you, the programmer. You may not use components provided within the interface to store and later retrieve data. 8. You must save your work regularly on the disk you have been given, or the disk space allocated to you for this examination session. 9. Make sure that your name and surname appears as a comment in every program that you code as well as on every event indicated. 10. 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. 11. At the end of this examination session you must hand in a disk/ CD/ DVD/ flash disk with all your word 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.

4 3 MP/June 2015 List of folders with files provided in the Data folder: Vraag_Question2: Vraag_Question3: SCENARIO: A few friends want to arrange a LAN evening. You are requested to assist with organising the evening and by writing software to streamline the logistics of the evening. SECTION A QUESTION 1: GENERAL PROGRAMMING SKILLS INSTRUCTIONS: a) Create the project Question1. b) Add your name and surname as a comment in the first line of the main form unit (Question1_U) file. Do the following: Create the graphic user interface (GUI) as shown on the next page. (13) The label of the name (Naam) must be formatted according to the following criteria: Font: Times New Roman Font style: Bold Italic Font size: 20 Colour: Purple

5 4 MP/June 2015 Each player must indicate what size of pizza they would like and whether a player would like to order a cold drink or NOT. The amount that each player will have to contribute is the average of the price of all the eats and the cost of the new game that will be bought. Remember to include VAT of 14% in the total price. The price of the game must be set at the OI for the textbox. The computer program must determine and display the average cost. Complete the code for each section of QUESTION 1 from QUESTION 1.1 to QUESTION 1.3 as stated below. 1.1 Button [Vertoon/ Show] (31) Get the data from the relevant components: o Name o Level at which the person participates ('combo box'). o The size of the pizza that the person wants to order ('radio group'). o If the person would like a cold drink or not ( checkbox'). Display the player s information in columns in the Rich Edit. An example of the output is shown on the next page.

6 Take the following into account: 5 MP/June 2015 o The prices of pizzas is as follow: L pizzas cost R83.00 M pizzas cost R S pizzas cost R45.50 o The price for a cold drink is R o If the player order a cold drink it must be indicated with a Ja/Yes else with a Nee/No. Example of output: 1.2 Button [Bereken koste/ Calculate cost] (7) Determine the amount that each player has to pay. Format the amount as currency 1.3 Button [Reset] (4) Clear the following components: the edit boxes, the radio group and the checkbox. Place the focus of the cursor in the (Name) name edit. Save your program. A hard copy of the code may be required. TOTAL SECTION A: 55

7 SECTION B 6 MP/June 2015 QUESTION 2: The organiser of the games evening asked you to write a computer program to generate a login password for each player. Create a computer program to generate a password for each player. INSTRUCTIONS: The project Vraag_Question 2 is given in the Vraag_Question 2-file. Add your name and surname as a comment in the first line of the main form unit (Vraag_Question 2_U) Do the following: Compile and run the program. The program does not have any functionality at the moment. An example of the interface is shown below: Complete the code for the program as specified below: o The user must enter his/her name and surname in as a single string and his /her birth date in the format YYYY/MM/DD o The password consists of the surname, name, month and the day of the date of birth concatenated; the coding must adhere to the following specifications: Separate the name and surname; you may accept that the user has only one name without any spaces. The surname must be converted into Capital letters, all vowels must be deleted and all spaces must be replaced with #. E.g. van der Walt will be changed to VN#DR#WLT.

8 7 MP/June 2015 The name must be changed into small letters and must be written from back to front (last letter first etc.). E.g. If the name is Johan it has to change to: nahoj. o Validation the date, the day, the month and the year completely. You may accept that the player s birth dates are between 1994 and If the date is valid, the first three characters of the month must be used in the password. E.g. If the birth date is 1997/02/28, then the Month is shown as Feb. If the date is invalid the word ERROR must be used as the month. The day is a numbers copied from the date of birth. An example of a valid password derived from the following test data is shown: Name and Surname: Johan van der Walt Date of Birth: 1997/02/28 VN#DR#WLTnahojFeb28 An example of an invalid password derived from the following test data is shown: Name and Surname: Johan van der Walt Date of Birth: 1997/02/31 VN#DR#WLTnahojERROR Display the name and surname; date of birth and the password in columns on the RichEdit. Enter headings for the columns. An example of the output is shown on the next page:

9 8 MP/June 2015 Ensure that your name and surname is entered as comment in the first line of your program. Save all the files. Print the program code if required. TOTAL SECTION B: 55

10 SECTION C 9 MP/June 2015 QUESTION 3 At the end of the games evening winners have to be announced. Each of the top three gamers receives a prize. Write code to determine the winners and the prizes that will be handed out. A text file and an uncompleted program are given to determine the results. An example of the data in the text file Uitslae_Results.txt is given. Name; score1; score2; score3; score4 Johan;34;54;65;1 Kevishin;54;67;12;98 Nellie;34;76;56;54 Sam;45;45;34;43 Divan;76;54;23;98 Monja;44;55;66;77 INSTRUCTIONS: The project Vraag_Question 3 is in the Vraag_Question 3 folder. Enter your name and surname as comment in the first line of the main form. (Vraag_Question 3_U) Do the following: 3.1 Button [Kry Data _Get Data] (30) Extract the data from the text file and place the names of the players in an array, arrname. Determine the average score of each player for the four games and place these averages into an array, arravg. Display the names and the averages. 3.2 Button [Verwerk data_ Process data] (10) Sort the arrays according to the averages in descending order (form big too small). Allocate the prizes to the three top contestants. (The prizes are given in an array as part of the coding). Display the names and the prizes of the winners.

11 10 MP/June 2015 Example of the output: Ensure that your name and surname is entered as comment in the first line of your program. Save all the files. Print the program code if required. TOTAL SECTION C: 40 TOTAL : 150

12 PROVINCIAL EXAMINATION INFORMATION TECHNOLOGY PAPER 1 MEMORANDUM JUNE 2015 GRADE 11 This paper consists of 6 pages 1

13 AFDELING A / SECTION A GUI 13 private icountplayers : integer; rcostperplayer, rtotcost, rprizegame : double; procedure TForm1.btnBerekenClick(Sender: TObject); rtotcost := rtotcost + rprizegame; rtotcost := rtotcost + rtotcost*0.14; rcostperplayer := rtotcost/ icountplayers; redafvoer.lines.add('cost per player: ' + FloatToStrF(rCostPerPlayer,ffCurrency,8,2)); procedure TForm1.btnVertoonClick(Sender: TObject); var sname, slevel, sbeverage : string; isize : integer; csize : char; rpizzaprice, rbeverageprize : double; sname := edtnaam.text; inc(icountplayers); rcostperplayer := 0; slevel := Vlak_Level.Items[Vlak_Level.ItemIndex]; isize := rgppizza.itemindex; case isize of 0 : rpizzaprice := 45.5; 1 : rpizzaprice := 60.25; 2 : rpizzaprice := 83; rbeverageprize := 0; sbeverage := 'Nee/No'; if chbkoeldrank.checked then rbeverageprize := 15.99; sbeverage := 'Ja/Yes'; rtotcost := rtotcost + rpizzaprice + rbeverageprize; redafvoer.lines.add(sname + #9 + slevel+ #9 + FloatToStrF(rPizzaPrice,ffCurrency,8,2) + #9 + sbeverage); procedure TForm1.FormShow(Sender: TObject); icountplayers := 0; rtotcost := 0; rprizegame := StrToFloat(copy(edtPrys.Text,2)); redafvoer.paragraph.tabcount := 4; redafvoer.paragraph.tab[0] := 100; redafvoer.paragraph.tab[1] := 200; redafvoer.paragraph.tab[2] := 300; redafvoer.paragraph.tab[3] := 400; procedure TForm1.BitBtn1Click(Sender: TObject); edtnaam.text := ''; chbkoeldrank.checked := false; rgppizza.itemindex := -1; edtnaam.setfocus; 4 TOTAAL /TOTAL 55 2

14 AFDELING B / SECTION B 2. procedure TForm1.btnKodeer_EncryptClick(Sender: TObject); var sname, ssurname, sdob,snamesurname, spassword:string; newsurname1,newsurname2, newsurname3, smonth, sabrmonth, sday, syear: string; ispace, len, i,iyear, imonth, icode, icode2,iday, idays: Integer; monthflag, dayflag, yearflag: boolean; // Input data snamesurname := edtnaamvan_namesurname.text; sdob := edtgeboortedatum_dateofbirth.text; len := Length(sNameSurname); ispace := Pos(' ',snamesurname); sname := Copy(sNameSurname,1,iSpace-1); ssurname := Copy(sNameSurname,iSpace+1); ssurname := UpperCase(sSurname); newsurname1 := ''; newsurname2 := ''; // Change surname for i := 1 to Length(sSurname) do if not(ssurname[i] in ['A','E','I','O','U']) then newsurname1 := newsurname1 + ssurname[i] ; for i := 1 to Length(newSurname1) do if (newsurname1[i] = ' ') then newsurname2 := newsurname2 + '#' ; end else newsurname2 := newsurname2 + newsurname1[i] ; // Draai naam om newsurname3 := ''; for i := Length(sName) downto 1 do newsurname3 := newsurname3 + sname[i];

15 // Get the month of DOB and validate monthflag := false; dayflag := false; yearflag := false; sabrmonth := 'ERROR'; smonth := Copy(sDOB,6,2); Val(sMonth,iMonth,icode); sday := Copy(sDOB,9,2); Val(sDay,iDays,icode2); iyear := StrToInt(Copy(sDOB,1,4)); if (icode = 0) AND (icode2 = 0) then if (iyear >= 1995) AND (iyear <= 2000) then yearflag := true; case imonth of 4,6,9,11 : if idays <= 30 then dayflag := true; 1,3,5,7,8,10,12 : if idays <= 31 then dayflag := true; 2 : if IsLeapYear(iYear) then if idays <= 29 then dayflag := true end else if idays <= 28 then dayflag := true; // end case if (imonth in [1..12]) then monthflag := true; // end if if monthflag AND dayflag AND yearflag then case imonth of 1: sabrmonth := 'Jan'; 2: sabrmonth := 'Feb'; 3: sabrmonth := 'Mar'; 4: sabrmonth := 'Apr'; 5: sabrmonth := 'May'; 6: sabrmonth := 'Jun'; 7: sabrmonth := 'Jul'; 8: sabrmonth := 'Aug'; 9: sabrmonth := 'Sep'; 10: sabrmonth := 'Oct'; 11: sabrmonth := 'Nov'; 12: sabrmonth := 'Dec'; spassword := newsurname2 + newsurname3 + sabrmonth + IntToStr(iDays); end else spassword := newsurname2 + newsurname3 + sabrmonth; redtafvoer_output.lines.add(snamesurname+ #9+ sdob + #9+sPassWord); procedure TForm1.FormActivate(Sender: TObject); redtafvoer_output.paragraph.tabcount := 3; redtafvoer_output.paragraph.tab[0] := 100; redtafvoer_output.paragraph.tab[1] := 200; redtafvoer_output.paragraph.tab[2] := 300; // Clear output redtafvoer_output.clear; redtafvoer_output.lines.add('naam en Van' + #9+ 'Geboortedatum' + #9+'Wagwoord'); 28 3 TOTAAL /TOTAL 55 4

16 AFDELING C / SECTION C private tdata : TextFile; sline : string; arrname : array[1..30] of string; arravg : array [1..30] of double; icount : integer; procedure TVraag_Question_3.btnGetDataClick(Sender: TObject); var ip, ipos, i, itot : integer; AssignFile(tData,'Uitslae_Results.txt'); try Reset(tData); Except ShowMessage('File not found'); Exit; memafvoer.lines.add(''); memafvoer.lines.add('deelnemers'); memafvoer.lines.add('naam'+#9+'gemiddeld'); memafvoer.lines.add('~~~~'+#9+'~~~~~~~~~'); while NOT EOF(tData) do inc(icount); Readln(tData, sline); ipos := pos(';',sline); arrname[icount] := copy(sline,1,ipos-1); delete(sline,1,ipos); itot := 0; for I := 1 to 3 do ipos := pos(';',sline); ip := StrToInt(copy(sLine,1,iPos-1)); itot := itot + ip; delete(sline,1,ipos); itot := itot + StrToInt(sLine); arravg[icount] := itot /4 ; for I := 1 to icount do memafvoer.lines.add(arrname[i]+ #9+FloatToStrf(arrAvg[i],ffFixed,8,1 )); memafvoer.lines.add(''); memafvoer.lines.add(''); procedure TVraag_Question_3.btnProcessClick(Sender: TObject); var i, j : integer; stemp : string; rtemp : double; memafvoer.lines.add('wenners'); memafvoer.lines.add('naam'+#9+'prys'); memafvoer.lines.add('~~~~'+#9+'~~~~'); for I := 1 to icount-1 do for j := 1 to icount do if arravg[i] > arravg[j] then stemp := arrname[i]; arrname[i] := arrname[j]; arrname[j] := stemp; rtemp := arravg[i]; arravg[i] := arravg[j]; arravg[j] := rtemp; for I := 1 to 3 do memafvoer.lines.add(arrname[i]+ #9 +arrprizes[i]); procedure TVraag_Question_3.FormShow(Sender: TObject); icount := 0; TOTAAL / TOTAL GROOTTOTAAL / GRAND TOTAL