control structure,array

Which of the following statements about the array are not true?

• a.To use an array, previously it is declared and defined.

• b. A one-dimensional array can store data in the form of table with many rows and columns.

• c. The position of every element of the array is used to access that element that position.

• d. A one-dimensional array can store different types of data

In VB.NET, when an array is partially initialized, the rest of its elements will automatically be set to zero.

• true

• false

A two-dimensional array represents data in the form of table with rows and columns.

• true

• false

• none

If you have an array of 20 elements, what is the good way to assign a value to each element?

• a. Assigning each element individually without using a loop

• b. Using a loop to assign a value to each element

An array object has a _________ property that can be used to find the number of elements in the array.

• breath

• length

• height

• string

The purpose of using a loop is to

• make decision

• repeat operation many times

• selection

Which of the VB.NET loops is not a pretest loop?

• a. for loop

• b. while loop

• do loop

• if

4. Which of the followings is not a nested loop?

• a. for i=0 to 9

  for j=1 to i+3

  Next

  Next

• b. for i=0 to 9

  Console.Write("i={0}",i)

  Next

  for j=1 to i+3

  Console.Write("j={0}",j)

  Next

• c. for i=0 to 9

  while(j Mod 2<>0)

  Console.Write("{0}", j & vbTab)

  j+=1

  End While

2. What would be printed from the following VB.NET program?

Module Module1

Sub Main()

Dim arr() As Integer= New Integer(){1,3,5,7,9} 'initialize arr array

Dim i As Integer

For i=4 to 0 Step -1 'output arr array

Console.Write("{0}",arr(i) & vbTab)

Next

Console.ReadLine()

End Sub

End Module

• 9 7 3 2 1

• 9 7 5 3 1

• 9 7 5 1 3

• 1 3 5 7 9 11

What would be the output from the following VB.NET code segment?

x=10

While(x>5)

Console.WriteLine("{0}",x)

x-=1

End While

• 1 2 3 4 5

• 0 1 2 3 4 5 6

• 10 9 8 7 6 5

• 10 9 8 7 6