Test 2

Question 1

When you program buttons, what are the categories for the coding?

(i.e., the green comments that you group your coding into?)

Answer 1

• ‘Variable declarations for Input
• ‘Assignment Statements for Input
• ‘Assignment Statements for Calculations
• ‘Output the data to the form

Question 2

Give the format for Assigning the text entered in the Text Box control labeled “txtBill”, to a variable called “billAmount”.

Answer 2

variable = CStr(txtBox.Text)

e.g., billAmount = CDbl(txtBill.Text)

Question 3

What type of code do you see under ‘Assignment Statements for Input?

Answer 3

variable = CDbl(txtBox.Text)

Question 4

What type of code do you see under ‘Output Data to the Form?

Answer 4

txtBox.Text = CStr(calculationVariableFromTheCalcStep)

e.g., txtMpg.Text = CStr(milesPerGallon)

Question 5

How do you clear out a text box?

Answer 5

ControlName.Text = ‘’ ‘‘

e.g.,

txtGradeTwo.Text = “”

OR

controlName.Clear

e.g.,

txtOne.Clear

Question 6

How do you clear out a list box?

Answer 6

ControlName.Items.Clear( )

e.g., lstOutput.Items.Clear()

Question 7

Give the basic Template for Adding Data to a LIST box:

Answer 7

ControlName.Items.Add( )

E.g.,

lstOutput.Items.Add(“Student Grade One Is: “ & CStr(gradeOne))

lstOutput.Items.Add(“Student Grade Two Is: “ & CStr(gradeTwo))

lstOutput.Items.Add(“Student Average Is: “ & CStr(average))

Question 8

How do you program a text box to say: “Student name’s average is studentAvg”

Answer 8

txtOutput.Text = “Student “ & name & “‘s average is “ & CStr(studentAvg)

Question 9

What is the VB code indicating that a radio box has been checked?

Answer 9

controlName.checked = True

e.g., (radSenior.Checked = True)

Question 10

How do you program a text box to say Hello? What is the code?

Answer 10

controlName.text = “Hello”

e.g., textOne.Text = “Hello”

Question 11

What is Tab Index?

Answer 11

the order in which your cursor moves when you hit Tab

Question 12

Where in the Visual Studio program do you go to adjust the Tab properties of a control?

Answer 12

Right-Mouse-Click (RMC) on that control → click “Properties” → go to the BEHAVIOR section under the Properties window

Question 13

Give the code to change the background color of a text box labelled “txtOne” to Green.

Answer 13

txtOne.BackColor = Color.Green

Question 14

Give the code to change the color of the text, written inside a text box, to Blue.

Answer 14

controlName.ForeColor = Color.Blue

e.g., txtOne.ForeColor = Color.White

Question 15

A text box is labelled txtOne. Give the code to change the color of the text, written inside a text box, to White.

Answer 15

txtOne.ForeColor = Color.White

Question 16

What are the 3 operations that most programs perform?

Answer 16

Input

Process

Output

Question 17

What is an algorithm?

Answer 17

logical sequence of precise steps to solve a problem

Question 18

Examples of higher-level languages:

Answer 18

• VB
• Java
• C++
• Python

Question 19

Give examples of a Control:

Answer 19

• labels
• textboxes
• buttons
• list boxes
• radio buttons

Question 20

List the steps of the Software Development Life Cycle:

Answer 20

1. Analyze
2. Design
3. Design the interface
4. Code
5. Test and correct
6. Complete the documentation

Question 21

Define coding.

Answer 21

it’s the technical word for writing a program

Question 22

What is the purpose of documentation?

Answer 22

to allow another person to understand your program/coding

Question 23

What is pseudocode?

Answer 23

an abbreviated plain English version of actual computer code.

Uses English-like phrases with some VB terms to outline the task

Question 24

What term is used by the textbook for an “if statement”?

Answer 24

dunno

Question 25

What term is used to describe a loop that repeats endlessly?

Answer 25

infinite loop

Question 26

In VB, What is a **control**?

Answer 26

responsive objects a programmer places on a window/form i.e., boxes and buttons

Question 27

What is an **event procedure**?

Answer 27

programming instructions in VB that tell your program how to respond to *events*, such as mouse clicks Essentially, anything executable in a VB program is in an event procedure p. 17, textbook

Question 28

the section of Vis Studio that has File, Edit, View, etc., is called the \_\_\_

Answer 28

Menu bar

Question 29

In Visual Studio, what's so important about the **Toolbox**?

Answer 29

it holds all the *controls*, such as buttons, labels, textboxes, etc.

Question 30

"Form1.vb" is found in a box/window called the \_\_\_.

Answer 30

Solution Explorer

Question 31

According to good programming practice, how should you name controls?

Answer 31

with 3-letter prefixes that identify the type of object ## Footnote p. 29

Question 32

The proper 3-letter prefix for a List box is:

Answer 32

lst

Question 33

List the 3 steps in creating a VB program:

Answer 33

1. Create the interface (i.e., *generate*, *position*, and *size* the objects) 2. Set properties (i.e., configure the appearance of the objects) 3. Write the code that executes when events occur

Question 34

The word ____ in the first line signals the beginning of the procedure

Answer 34

Sub

Question 35

The first line of an event procedure is called a \_\_\_.

Answer 35

header

Question 36

An event procedure starts with the words ____ and ends with the words \_\_\_\_\_.

Answer 36

* Private Sub * End Sub

Question 37

What's the difference between **raising** an event, versus **handling** an event?

Answer 37

Clicking a button **raises** the event; the event procedure is said to **handle** the event

Question 38

What is contained within the **body** of an event procedure?

Answer 38

The coding found between **Private Sub** and **End Sub** makes up the Body of an Event Procedure. The body includes the object, and the event occurring to that object.

Question 39

What is the default event of a **button** control?

Answer 39

Click see p. 45

Question 40

What is the default event of a **textbox** control?

Answer 40

TextChanged see p. 45

Question 41

**btnEvaluate\_Click** is an example of a:

Answer 41

procedure name

Question 42

Give an example of a **function call**.

Answer 42

CDbl, CStr, CInt

Question 43

CDbl, CStr, CInt are all examples of:

Answer 43

function call

Question 44

What is the basic template/format for a ForLoop? Write the code:

Answer 44

for i as Integer = 0 To listBox.Items.Count - 1 Variable = CStr**/**CDbl**/**CInt(listBox.Items(i)) (possible If Then statements) Next *e.g.*: grade = CDbl(lstNumGrade.Items(i))

Question 45

What is the correct VB code for showing the total # of items in a List Box?

Answer 45

lstBox.Items.Count

Question 46

To distinguish them from event procedures, Function procedures and Sub procedures are referred to as \_\_\_.

Answer 46

**General** procedures

Question 47

What are the devices that VB has, that can break complex problems into smaller problems to be solved one at a time?

Answer 47

* function procedures * sub procedures

Question 48

When talking of sub procedures, what is an **argument**?

Answer 48

An **argument** is anything we send to a method or sub procedure the items inside the parentheses

Question 49

When talking of sub procedures, what is a **parameter**?

Answer 49

the variables appearing in the header

Question 50

What is **Concatenation**?

Answer 50

Concatenation is the joining of multiple strings into a single string, by using **+** and **&**

Question 51

What is a sub procedure?

Answer 51

sub procedure is a section of code written by the programmer to perform a specific task . It is written outside the main procedure and will only execute when called .

Question 52

Where's a **local variable** found?

Answer 52

A **local variable** is in your sub procedure

Question 53

An _____ starts with the words Private Sub and ends with the words End Sub.

Answer 53

event procedure