<p>CSE1PE Programming Environment 2008 Practice Exam 1 Solution</p><p>Question 1</p><p>(a) i * j / 2</p><p>5 * 2 / 2 10 / 2 5</p><p>(b) x – 0.8 / j + (i * 2)</p><p>6.4 – 0.8 / 2 + (5 * 2) 6.4 – 0.8 / 2 + 10 6.4 – 0.4 + 10 6 + 10 16</p><p>Question 2</p><p>(a) i >= 5 And j <> 2</p><p>5 >= 5 And 2 <> 2 True And 2 <> 2 True And False False</p><p>(b) x < 0 Or Not x > 10</p><p>6.4 < 0 Or Not 6.4 > 10 False Or Not 6.4 > 10 False Or Not False False Or True True</p><p>Question 3</p><p>Values are – i: 5 x = 6.40 or</p><p>Values are - i: 5 x = 6.40</p><p>Question 4</p><p>(a) What are some major features of UNIX?</p><p> Multi-user  Command driven  Multiple user accounts  One directory tree  Reliability 2008 Practice Exam 1 Solution Programming Environment (CSE1PE)</p><p>(b) What is ftp used for? How would you connect to redgum using ftp? What different file transfer modes are available? Name an alternative ftp program available for Windows.</p><p> Transferring files  ftp ironbark.bendigo.latrobe.edu.au or ftp, then open ironbark.bendigo.latrobe.edu.au  ASCII, Binary  One of: ws_ftp, cuteftp etc</p><p>(c) What is the alias command used for? Give an example.  aliases can be used to define command shortcuts  aliases should be specified in .bashrc if they are to be generally available  e.g. alias l=”ls –al”</p><p>Question 5</p><p>(a) pwd (b) ls (c) ls –al or ls –a -l (d) mv test.java test2.java (e) nedit test2.java& (f) javac test2.java (g) java test2 (h) lpr –Pitlab5 test2.java (i) mkdir examples (j) cp test2.java examples/test3.java (k) cd examples (l) rm ../test2.class (m) cd or cd ~ (n) chmod o-w * (o) cat ../klray/a1.java (p) less /usr/staff/tim/q1.java or more </p><p>Question 6</p><p>(a) What is meant by input validation? Give two examples (code NOT required).</p><p> Checking a value input by a user is correct  Examples: checking a month number of between 1 and 12; Checking a membership of a club is Full, Junior or Life ("F", "J" or "L")</p><p>(b) What is a sentinel value? What is it used for?  A special value input by a user to indicate that the end of input.  The sentinel value should not be able to be confused with a normal valid value e.g -1 for a mark  Used to indicate the end of input in a while loop.</p><p>Page 2 2008 Practice Exam 1 Solution Programming Environment (CSE1PE)</p><p>Question 7</p><p>Line Member membership membership total Conditions Input/ Output Number ship Fee Name Type Fees 1, 2 0 3 J membership type ? J 4 "J" <> "X" ? is True 5, 12, 13 "J" = "F" ? is False 16, 17 "J" = "J" ? is True 18 80 19 "Junior" 23 - 25, 6 0 + 80 = 80 7 membership Name = Junior; membership Fee = 80 8 membership type ? X 9, 4 "X" <> "X" ? is False 10 Total Fees = 80 11</p><p>Question 8</p><p>Option Compare Database Option Explicit</p><p>Sub Main() Dim category As String Dim concession As String Dim price As Double Dim reason As String Dim totalTakings As Double</p><p> totalTakings = 0 concession = InputBox("Concession (Y=Yes, N=No, X=eXit) ?") While concession <> "X" If concession = "Y" Then reason = InputBox("Reason (C=Child, P=Pensioner) ?") If reason = "C" Then category = "Child" price = 8 Else category = "Pensioner" price = 9 End If Else category = "Full" price = 12 End If totalTakings = totalTakings + price Debug.Print category; ": $"; Format(price, "0.00") concession = InputBox("Concession (Y=Yes, N=No, X=eXit) ?") Wend Page 3 2008 Practice Exam 1 Solution Programming Environment (CSE1PE)</p><p>Debug.Print "Total takings = $"; Format(totalTakings, "0.00") End Sub</p><p>Page 4 2008 Practice Exam 1 Solution Programming Environment (CSE1PE)</p><p>Question 9</p><p>(a) Defining Diagram</p><p>Inputs Processing Outputs averageBalance Input averageBalance, numberOfTrans fees numberOfTrans Calculate fees interestRate Determine interestRate interest Calculate interest Display fees, interestRate, interest</p><p>(b) Pseudo Code</p><p>CalcFeesAndInterest() Input averageBalance WHILE averageBalance >= 0 DO Input numberOfTrans IF averageBalance < 1000 THEN fees = 40 + numberOfTrans * 0.50 interestRate = 0 ELSE IF numberOfTrans < 10 THEN fees = 40 ELSE fees = 40 + (numberOfTrans – 10) * 0.50 ENDIF interestRate = 3 ENDIF interest = averageBalance * interestRate / 100 Display fees, interestRate, interest Input averageBalance ENDWHILE STOP</p><p>(c) Data Dictionary</p><p>Identifier Name Data Type Description averageBalance Double The average balance in the account over the year in $. fees Double The fees payable on the account of the year in $. interest Double The interest earned on the account for the year in $. interestRate Double The interest rate applicable to the account in %. numberOfTrans Integer The number of transactions on the account fore the year.</p><p>Page 5</p>