CPSC 203 Final exam review and solutions

Transcription

1 CPSC 203 Final exam review and solutions Short answer 1: You can assume that one or more documents have been opened in MS-Word. Fill in the body of the VBA subroutine so that the first two documents in that collection will be printed and saved and the remaining documents will just be saved. Sub printandsave() ' Write your answer here ' End answer space

2 Page 2 of 11 Short answer 2: Modify the following VBA program so it will display Match if age is between and city is either Calgary or Red Deer. Not a match should be displayed in all other situations. Output messages are to be displayed via MsgBox popups. Sub branchproblem() Dim age As Long Dim city As String age = InputBox("Age (e.g. 18): ") city = InputBox("City (e.g. Edmonton): ") ' Write your answer here ' End of answer space

3 Page 3 of 11 Short answer 3: Modify the following VBA program so the variable result will be the resulting exponent of base raised to the value stored in the variable power : Base = 2, power = 3, result = 2^3 = 8 Base = 1, power = 12, result = 1^12=1 Base = 55, power = 0, result = 55^0=1 You must not use functions or methods built into VBA that will calculate an exponent for you. Instead you must write the code yourself. Recall: that an exponent is a series of successive multiplications (2 ^ 3 = 2 * 2 * 2) so some sort of looping mechanism needs to be employed. For this version of the question you can assume that the user will enter a base and power that is zero or greater. Sub exponentloops() Dim base As Long Dim power As Long Dim result As Long Dim i As Long base = InputBox("Base (zero or greater): ") power = InputBox("Exponent (zero or greater): ") ' Write your answer here ' End of answer space MsgBox (base & " raised to " & power & "=" & result)

4 Page 4 of 11 Short answer 4: Modify your solution to the previous program to include the following features: After calculating an exponent the program will prompt the user to quit. If the user enters anything other than an option to quit ( q or Q ) it will re-prompt for the base and power and calculate a new resulting exponent. If the user enters a negative value for either the base or power then the program will display a helpful error message (e.g., base and exponent must be zero or greater ) Hint: your solution should employ nested loops and an additional branch (along with more nesting). This is an example of a more challenging exam problem. ' Write your answer here ' End of answer space

5 Page 5 of 11 Short answer 5: Specify the output text shown in the MsgBox when the following VBA program is run. Sub extratrace() Dim i As Long Dim result As Long i = 1 result = 0 Do While (i <= 20) If (i < 5) Then i = i + 1 ElseIf (i <= 10) Then i = i + 2 Else i = i * 2 result = result + 1 Loop MsgBox ("i=" & i & " result=" & result) ' Write your answer here

6 Page 6 of 11 Short answer 6: Specify the output text shown in the alert boxes when the document containing the JavaScript program index.html is loaded into a web browser. Index.html <script> function main() { var a = 7; var b = 8; var c = 13; var d = "2"; alert(a + " " + b + " " + c + " " + d); b = a * c; a = a + a; d = d + d; alert("d=" + d + " " + a + b); }; window.onload=main; </script> /* Write your answer here */

7 Page 7 of 11 Short answer 7: Annotate following text with the appropriate html tags so that the output matches the image (the heading Silent Hill 3 should be a level h3 heading). << Original text >> Silent Hill 3 Heather: You think you're superman or something? Douglas: Y'know I always wanted to be him. << Desired output as a web page >>

8 Page 8 of 11 Multiple choice questions: 1) Which of the following VBA variables can be used to store your name? a. Long b. Double c. String d. A const For Questions 2 4 you are to determine the output of the corresponding VBA branching program. 2) Sub mcbranch1() Dim anum As Long Dim astring As String anum = 0 astring = "" If (anum > 0) Then astring = "a" Else astring = "b" astring = astring & "c" MsgBox (astring) a. a b. b c. c d. bc e. None of the above

9 Page 9 of 11 3) Sub mcbranch2() Dim anum As Long Dim astring As String anum = 12 astring = "" If (anum >= 0) Then astring = astring & "a" If (anum >= 0) Then astring = astring & "b" If (anum >= 10) Then astring = astring & "c" MsgBox (astring) a. a b. c c. ab d. abc e. None of the above

10 Page 10 of 11 4) Sub mcbranch3() Dim anum1 As Long Dim anum2 As Long Dim astring As String anum1 = -1 anum2 = 1 astring = "x" If (anum1 >= 0) Then astring = astring & "a" If (anum2 >= 0) Then astring = astring & "b" Else astring = astring & "c" Else anum1 = 7 anum2 = anum2 * 2 MsgBox (astring) a. x b. xa c. xb d. xc e. None of the above For Questions 5 6 you are to determine the number of times that the loop for the corresponding VBA program will execute. 5) Sub mcloop1() Dim i As Long i = 0 Do While (i < 10) i = i + 1 Loop MsgBox (i) a. 0 b. 1 c. 10 d. 11 e. This is an endless loop

11 Page 11 of 11 6) Sub mcloop2() Dim i As Long i = 0 Do While (i <= 10) i = i + 1 Loop MsgBox (i) a. 0 b. 1 c. 10 d. 11 e. This is an endless loop 7) What is the output of the MsgBox when the following program executes? Sub mcloop3() Dim i As Long Dim j As Long Dim k As Long i = 0 j = 0 k = 0 For i = 1 To 4 Step 1 For j = 1 To 2 Step 1 k = k + 1 Next j Next i MsgBox (k) a. 0 b. 2 c. 4 d. 6 e. 8 8) What will the following html tags look like when displayed in a web browser? silly <b>string</b> a. silly string b. silly string c. silly string d. silly <b>string</b> JT: Liked the practice exam, then you ll love the real thing!