Buy New CIS170A Quiz 5 in vb

Buy New CIS170A Quiz 5 in vb

1. (TCO 7) Modular programming uses a(n) _____ and _____ approach to problem solving. (Points : 3)
divide, conquer
breakdown, conquer
divide, simplify
abstraction, modular

2. (TCO 7) In Visual Basic, variables can be declared with what scope? (Points : 3)
Local
Universal
Global
Local and Global
Local and universal

3. (TCO 7) The _____ statement is used to pass a value back to the calling code from a function. (Points : 3)
void
return
type
value parameter

4. (TCO 8) Which part of a function or sub-procedure declaration statement is optional? (Points : 3)
Procedure name
Body code
Header
Parameters

5. (TCO 8) The process of passing only the value of a variable to a function or sub-procedure is called _____. (Points : 3)
passing by reference
passing by value
localization
valuation of parameters

6. (TCO 8) Consider the following function call.

Dim letter grade As String
letterGrade = CalcLetterGrade(95.5)

What would be a valid function declaration? (Points : 3)
Private Function CalcLetterGrade(ByVal del X As Double) As Integer
Private Function CalcLetterGrade(ByVal del X As Double) As String
Private Function CalcLetterGrade(ByVal del X As Double) As Double
Private Function CalcLetterGrade(ByVal into As Integer) As String

7. (TCO 8) What changes are required in the following code so that the resulting output is as follows?

Expected Output:
num1 = 2
num2 = 1
num3 = 3

Code:

Sub Main()

Dim num1 As Integer = 1
Dim num2 As Integer = 2
Dim num3 As Integer = 3

Swap(num1, num2, num3)
Console.WriteLine(“num1 = ” & num1)
Console.WriteLine(“num2 = ” & num2)
Console.WriteLine(“num3 = ” & num3)

End Sub

Sub Swap(ByVal an As Integer, ByVal b As Integer, ByVal c As Integer)
Dim temp As Integer
temp = a
a = b
b = temp
End Sub (Points : 3)
Change function declaration to Sub Swap(ByVal an As Integer, ByRef b As Integer, ByVal c As Integer).
Change function declaration to Sub Swap(ByRef an As Integer, ByVal b As Integer, ByVal c As Integer).
Change function declaration to Sub Swap(ByRef an As Integer, ByRef b As Integer, ByVal c As Integer).
No changes are required, and the function works as expected.

8. (TCO 8) What is displayed when the following code is executed?

Sub Main()
Dim val1 As Integer = 4
Dim val2 As Integer = 5

Triple(val1, val2)
Console.WriteLine(“val1 = ” & val1)
Console.WriteLine(“val2 = ” & val2)

End Sub

Sub Triple (ByVal x As Integer, ByRef y As Integer)
Dim temp As Integer
temp = x
x = y
y = temp
End Sub (Points : 3)
val1 = 5
val2 = 4
val1 = 4
val2 = 4
val1 = 4
val2 = 5
None of the above

9. (TCO 7) Which of the following is NOT an advantage of creating modular code? (Points : 3)
The complexity of the code design decreases.
The amount of time required to code a program decreases.
Finding errors is easier.
Many people can work on related modules at the same time.

10. (TCO 7) Which of the following should NOT be considered when designing a module? (Points : 3)
The module should perform one single task.
The module should contain appropriate documentation.
The module should have a single entry point.
The module should allow for a flexible interface.

11. (TCO 8) What will be the output of the following program when it is executed?

Sub Main()

Dim num As Integer = 5
MultiplyAndPrint(num)
num = 7
MultiplyAndPrint(num)
num = 9
MultiplyAndPrint(num)

End Sub

Sub MultiplyAndPrint(ByVal num As Integer)
Dim strHold As String
If num >= 7 Then
strHold = “Result is: ” & (2 * num)
Else
strHold = “Result is: ” & (8 * num)
End If

System.Console.WriteLine(strHold)

End Sub (Points : 5)

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