Chapter 8

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Chapter 8

Chapter 8
Chapter 8 Quiz: Arrays, Timers, and More

This activity contains 10 questions.

Which are characteristics of an Array?

i. An array stores multiple values of the same using one name.

ii. Values stored within an array are called elements.

iii. Arrays utilize indexes to identify a specific element within the array.

iv. If n is the number of elements within an array, the subscript of the first element in the array would be 0 and the subscript of the last element in the array would be n-1.

all but ii are true all are true all but iv are true only ii and iii are true

In the declaration: Dim studentID(10) As Integer the number 10 refers to:

The initial value of the first element in the array The index number for the last value in the array. The number of elements in the array. The maximum number of characters each element in the array can contain.

Assigning an integer to a variable, and then using that variable as a subscript to an array, allows you to utilize a ____________ to access each element of the array.

class sub procedure or functioncommand loop

A special loop designed specifically to access values from arrays is:

a Do…Until loop a Do…While loop a For…Next loop a For…Each loop

If an array is declared with the following syntax: Dim studentID(10) As Integer the number statement studentID.Length will return a value of:

The maximum number of characters each element in the array contains.0 11 10

What would the following snippet of code using an array named intValue of 50 integer values accomplish? Dim temp as integer Dim i as integer, j as integer

For i  =  0 to (intValue.Length – 2)
	For j = (i + 1) to (intValue.Length-1)
	   If intValue(i) < intValue(j) Then
		temp =  intValue(i)
		intValue(i) = intValue(j)
		intValue(j) = temp
         End If
 	Next j
Next i

It would sort the array from lowest to highest, so that intValue(0) would contain the smallest value in the array, and intValue(49) would contain the largest value in the array. It would sort the array from highest to lowest, so that intValue(0) would contain the largest value in the array, and intValue(49) would contain the smallest value in the array. It would make all the array values in intValue alike. It would make IntValue(0) the smallest value in the array

Which statements about arrays are true?

i. The word Preserve is optional, and when used with a ReDim statement makes sure that any existing values within the array are not destroyed.

ii. A ReDim statement redefines the dimension of an existing array

iii. A ReDim statement is used when the number of elements an array will contain is known at design time.

iv. The statement Dim intValue() as Integer is incorrect syntax because the array size is missing.

only ii and iii are trueonly ii is true all but iii and iv are true all are true

To pass an array to a sub procedure or function, the parameter variable is declared as an array with

the upper subscript as a variable to be defined by the user within the sub procedure or function the upper subscript defined An array can not be passed to a sub procedure or a function.the upper subscript left blank as open parenthesis

In the multidimensional array declaration Dim intValues(4, 14) as Integer the number 15 stands for:

The last dimension, where the array intValue starts at subscript 4 and ends at subscript 14.The highest column subscript The highest row subscript The number of total values that can be stored in the array

Which statements are true about Timer Controls?

i. A Timer Control is used to automatically execute code at regular intervals during the run of an application.

ii. A Timer Control responds to a Tick Event. To generate a Tick Event, double click a Timer Control that has been placed within a form.

iii. A Timer Control has three important properties; Enable, Visible, and Interval.

iv. The Interval property works in milliseconds; therefore if the property is set to 100, the interval will restart every second.

only ii and iii are trueall are true all but iii and iv are true all but iii

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