a. Look at the following array declarations and indicate the number of elements

Question

a. Look at the following array declarations and indicate the number of elements in each array:

1. Dim dblNums(100) As Double

2. Dim intValues() As Integer = {99, 99, 99}

3. Dim intArray(0) As Integer

b. The following code totals the values in two Integeer arrays: intNumberArray1 and intNumberArray2. Both arrays have 25 elements. Will the code print the correct sum of values for both arrays? Why or why not?

Dim intTotal As Integer = 0   ' Accumulator
For intCount = 0 to 24
     intTotal += intNumberArray1(intCount)
Next
MessageBox.Show("Total for intNumberArray1 is " & intTotal.ToString())
For intCount = 0 to 24
     intTotal += intNumberArray2(intCount)
Next
MessageBox.Show("Total for intNumberArray2 is " & intTotal.ToString())

Explanation / Answer

a.

                    The above array dblNums can store 101 elements.

               The above array intValues contains 3 elements.

                 The above array intValues can store 2 elements.

b.

No, the given code will not print s um of values for both arrays

A statement “ intTotal=0” is missed before for loop that calculate the sum of inNumberArray2

So, add the statement intTotal=0 between two for statements as follows.

        Dim intTotal As Integer = 0   ' Accumulator

        For intCount = 0 To 24

        intTotal += intNumberArray1(intCount)

        Next

        MessageBox.Show("Total for intNumberArray1 is " & intTotal.ToString())

        'clear the counter before calculating sum of intNumberArray2

        intTotal=0

        For intCount = 0 To 24

        intTotal += intNumberArray2(intCount)

        Next

        MessageBox.Show("Total for intNumberArray2 is " & intTotal.ToString())

The above code will print the sums for both arrays.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.