Download Exam Review 08

ICS3M1Exam Review
 What is a computer?
 Draw a computer
 What is ergonomics?
 Draw and label a picture of how you should sit at a computer.
 What are the three main constructs used to make a computer program?
 How many different kinds of looping statements does Visual Basic support?
 How many different Do statements does Visual Basic support?
 Sum the odd numbers from 51 to 100.
 Sum numbers from 50 to 30.
 Compute the factorial of 5! (5x4x3x2x1)
 Cerate program that will allow input form a file “EXAM_Jan08.txt” Calculate the Average, and output the numbers
that are larger than the average to the File “YourName_Jan08.txt”
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Find the Error:
Rewite the whole program. Include the line numbers and add any lines that you need. Indent properly
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For 1 – 10
Print “Hello”
End CNT
Dim A = real
MyAge = messageBox(“Enter your Name”)
If MyAge > 22
Print “Old”
Else MyAge >14
Print “Teen-Monster”
Otherwise
Print just a kid
Next Cnt
Dim Mme = integer
For TheName = 1 to 10
Inputbox(“enter Your Name”) = Mme
Print Mme
End for
2. Fill in the Blanks
Rewrite the whole program
This program should output the names of people that are Under 16
1. Dim Age _________
2. Dim Name ________
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4. For cnt = 1 to 10
5. Name = _____________________
6. Age = ______________________
7. If __________> 16 then
8. Print Name
9. ____________
10. ____________
3. Write the Code
 Create a program that will allow the user to enter the AGE of people and output “Average Under 16” Or output
“Average Age is 16 ” OR output “Average Age is Over 16”. The average will be calculated and the repeation end
when the age of 0 (zero) is entered.
 Write the code for a Picture PIC1 to move across the screen.
 Write the code that will make a PIC1 stop if it hits PIC2.
 Write the code that will average 5 marks between 0 and 100
 Write the program that will output the highest number of 6 enteries
 Write the code that will allow the user to
 Write the code that will allow the user 3 guesses at a password (password is JUMP)
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Bubble Sorting What is the output of the following
Do a Full Walkthrough
Test Data: 10,11,1,99,21,2,12, 10, 100, 10000, 10101
1. ‘ Bubble Sort.
2. 'declare variables
3. Dim i, cnt, sample(7), temp, ABC As Integer
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'counted loop repetition to input an array of numbers
For i = 0 To 7
'collect data from input box into sample
sample(i) = Val(InputBox("Enter Number"))
Next i
'counted loop from 0 to 6 (ubound-1) Why 6???
For Outter = 0 To 6
' counted loop from 1 past Outter to 7 (ubound)
For Inner = (Outter + 1) To 7
'compare which number is greater to put highest on top
If sample(Outter) < sample(Inner) Then
'swap the numbers
temp = sample(Outter)
sample(Outter) = sample(Inner)
sample(Inner) = temp
End If
Next Inner
Next Outter
'print in new order
For i = 0 To 7
Print sample(i)
Next i
1. Do a walkthrough with the data given above
2. Rewrite the line and line number so that the following changes can be made.
a. sort in the opposite direction (ascending vs descending)
b. the array Sample size is 100 elements
c. Sort only elements 25 to 75
Random Numbers:
Dim MyValue
MyValueA = Int((6 * Rnd) + 1) ' Generate random value between 1 and 6.
MyValueB = Int((1000 * Rnd) ) ' Generate random value between 0 and 1000.
MyValueC = Int((200 * Rnd) –100) ' Generate random value between -100 and 100.
What is the code to create a random number between….
a) 50 and 100
b) 1 to 21
c) 1000 to 2000
d) –10 to +10
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Repetition: Rewrite each of the following program so that they work
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Output # 1 thourgh 10 on the screen
For ___________
Print ___________
Next _______________
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Output # from 1 to 30 on the screen
______________________________
Print CNT
Next __________________
3
Output # from 50 random numbers that are between –100 and +100
For CNT _________________
Print ______________
Next ________________
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Sum Of numbers 1- 15:
_________________________’initalize to
zero
For ______________________
MySum = ________________________
Next _____________
Print “The Sum from 1 to 15 is:” & MySum
5. Fill and array called MYDATA that is size 201 with random numbers between 0 and 100
___________________
For _____________________
_____________________________
_____________________________
_______________________
Next CNT
6. Write the code that will sum (add together) all the numbers in the array MYDATA (in number 5)
For ______________________
_____________________
Next
Print MyDataTotal
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What is the following code going to do??? Give detail for 3 Marks
For CNT = 1 to 10
Picture1.Top = Picture1.Top + CNT
Picture1.Left = Picture1.Left +CNT
Next CNT
8. Conditional Loop : Repeat until Input is “HELLO”
Do __________________________________________________
MyWord = inputbox(“Enter a password”)
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9. Conditional Loop : Repeat while Total is less than 1000 OR 10 numbers have been entered Output the total at the end
of the repatition.
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Do __________________________________________________
MyNum = VAL( inputbox (“Enter a password”) )
Total ______________________________ ‘Sum of MyNum
MyCount ____________________________
_____________________
_____________________

Read and Write Files
Private Sub Command1_Click()
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Open "c:\MyDataFile.txt" For Input As #1
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Open "c:\MySolutionFile.txt" For Output As #2
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Do Until EOF(1)
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Input #1, TheData
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NewData = StrConv(TheData, 3)
Write #2, NewData
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Print NewData
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Loop
Close #1
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Close #2
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End Sub
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Private Sub Command2_Click()
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Open "c:\MySolutionFile.txt" For Input As #1
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Do Until EOF(1)
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Input #1, Somedata
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List1.AddItem Somedata
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Loop
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Close #1
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End Sub
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Q: What does each part of this command do?
Open "c:\MySolutionFile.txt" For Output As #2
Q: Why do you need to close files
Q: What does EOF(1) mean? What is the digit 1 used for?
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Selection
1. Input an Income for 5 people that work in a companyn (Use an array). Calculate the tax for each of them and output
the Tax and the Take-Home based on on the following Scale:
a.
0 - $16,500
0%
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16,501 – 21,000
7%
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21001 – 25,000
10%
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25,001 - 33000
12%
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33,001-70,000
17%
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70,001 – 90,000
22%
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90,001 – 100,000
29%
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100,000 up
37%
Store the tax that each person pays into a second array
Output the total tax and the average tax paid by the employees
Use control array to create a game of connect 3. The game
3. When are the following statements executed?
a) the statements underneath the If line?
b) the statements underneath the Else line?
c) the statements underneath the Else line?
4. Find mistakes in the following (Rewrite all the code correctly ON PAPER then try it out on the computer):
a)
If m_number >= 0 And m_Number <= 100
Then Print “Valid mark”
Else If
Debug.Window “Invalid entry”
EndIf
b)
If Age >17
Print “ A major"
Print “ Age of Majority"
End If
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If Mark <= 0 And Mark >= 100 Then
Debug.Print “Not a mark”
End If
Z=inputbox(“This is a test Mark”)
X = inputox(“This is the grade”)
If z>x then
If z>10
Print x
Else
Print “too small”
Else
Print “z is bigger than x”
End if
6. State what happens in the following program: Write on paper what you think it will do then test the code on the computer
and see if you are correct.
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Dim Large As Integer, Small As Integer, Y As Integer
Large = 20
Y = 21
If Large < Y Then
Large = Y
Else
Small = Y
End If

String Manipulation
1. What is the result of each of the following commands: [6 marks]
a) print Mid(“This is a test”,1 , 1)
b) print mid(“this is a test”, 2, 2)
c) print Ltrim (“ this is a test
“)
d) print LEN(“This is a test”)
e) print Ucase (“This is a test”)
f) print instr ( 1, “This is a test”, “is”)
3 Create the following code.]
a) Input a word and output it in reverse ie) Hello => olleH
b) Input a sentence and output the number of words in the sentence.
4 What is the output of:
a) print asc(“A”)
b) print acs (“a”)
c) print asc (“d”)

Walkthroughs of the following: What is the output of the following
1. Dim Age(4), ShoeSize(4) as Integer
1. Dim THIS as string
2. TotalAge=0
2. THIS = “Exam Preep”
3. For cnt = 0 to 4
3. For A = 0 to len( THIS)
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Age(cnt) = InputBox(“Enter Age”)
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x=mid(THIS,A,1)
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ShoeSize(cnt) = InputBox(“Shoe Size”)
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if x = “E” or x = “e” then
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Total Age = TotalAge + Age
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E_count=E_count+1
7. Next cnt
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endif
8. AverageAge = TotalAge / 5
8. Next A
9. For ZZ = 4 to 0 step -1
9. Print E_Count
10. If AverageAge > ShoeSize(ZZ) then
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Print “act your age”
12. Else
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Print “Good”
14. End if
15. Next ZZ
Test Data 11,21, 23, 12, -32,22, 0,0, 32, -4
1. For A = 1 to 40 Step 8
Do until MyMark=-99
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XY =Inputbox (“Enter a Value”)
MyMark=val(inputbox(“Enter a mark”)
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If XY > A or XY<0 then
Total = total + MyMark
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Print XY
Count = count+1
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Else
Loop
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Print A
Average = total/count
Testdata: 76,75,74 ,-99
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Endif
8. Next A
 Is there a problem with this program that should
Test Data: 5,8,17,0,-31
calculate the average. Rewrite a correct program.