Year 10 – Introduction to Programming – Exam Revision

Flashcards for exam revision

Visual Basic Program Creation Order

The correct order is: Create the interface, set the properties, write the code

Visible Property

The property that if set to false, will cause the control not to be seen.

Check Box

Involves turning on or off an option in a dialog box.

Function

A reserved word in Visual Basic.

Boolean

A data type to store a value that has one of two possible states such as true or false.

Subprogram

A self-contained section of code that performs a particular task.

OOP (Object-Oriented Programming)

Requires a programmer to package data and the methods into a single unit called an object.

Logic Error

Result from an incorrect series of steps to solve the problem.

Internal Documentation

Comments or remarks within the program code to explain its purpose.

Visual Basic

An Object-oriented programming language

The Toolbox

Window to see all of the objects that you can add to a form.

TextBox control

Control that displays text that can be modified by the user

Single

Data type for decimal

Names may contain spaces

Naming identifiers that is not allowed

>

Type of operator used for comparison.

If

Logical operator

A nested If

If statement contained within another If statement.

Startup

The form that us loaded first in a project with multiple forms

ListBox

Control from the toolbox to create list boxes on a form

FirstName

Example of Camel casing

Illegal variable name

2nd_Try

Legal variable name

OurCompanyName

Legal variable name

Rnd

Legal variable name

Address_Line2

Illegal variable name

Howareyou?

Visual Basic Syntax for R = D  2

R = D / 2

Visual Basic Syntax for Count  10

Count >= 10

Visual Basic Syntax for Perimeter = 2(L + W)

Perimeter = 2 * (L + W)

Visual Basic Syntax for Y = 32

Y = 32

Caption Value for Extra cheese

Value would be TRUE

INT(7.8)

Result is 7

9 mod 2

Result is 1

16\10

Result is 1

8 + 3 ^ 2

Result is 17

Format(3/4, “#.###”)

Result is .75

Format(3/4, “0.000”)

Result is 0.750

Format(3/4, “#.000”)

Result is .750

Format(3/4, “0.###”)

Result is 0.75

Single line of code to display the letter “A” on a button called, btnA

btnA.Text = "A"

What is internal documentation?

Adding comments to the code to explain what it should do. It's used to enable better program understanding and easier debugging.

the two different roles of the equals sign

the equals sign is assigning a value to a variable; the equals sign is used as a comparison operator.

“Jonathan” > “Johnathon”

TRUE

“television” = “TV”

FALSE

“Australia” < “Oz”

FALSE

What is the difference between syntax error and logic error?

Syntax error, means that an error has been made with the grammar of the programming language. Logic error, means the program compiles and runs but it produces the incorrect result.

Controls

btnEnlarge and lblMessage

Event

Click

Property

FontSize

Value of property

13.5

A variable LastName holding the surname of a student

Dim LastName As String

A variable GameOver that is to have a value of TRUE or FALSE

Dim GameOver As Boolean

A variable IntRate that hold the value of bank interest rate as a percentage

Dim IntRate As Single

A constant Pi that has a value of 3.14

Const Pi As Single = 3.14

Condition

chkItalic.Checked

‘Then’ action

txtEntry.Font = New Font("Arial", 12, FontStyle.Italic)

‘Else’ action

txtEntry.Font = New Font("Arial", 12, FontStyle.Regular)

Object-Oriented Programming Language

VB is called Object-Oriented Programming because: VB treats all the elements found in the language as objects. This makes for a more effective method of programming, as the programmer focuses their attention on what they want individual objects to do, rather than giving step-by-step instructions to the computer.

Event handler that will calculate and display the volume.

Volume = Length × Width × Height)

77

Integer

Sarah Tang

String

4.56

Sindle

TRUE

Boolean

Form

frm

Button

btn

Check box

chk

Horizontal scroll bar

hsb

Label

lbl

Picture box

pic

Radio button

rad

Text box

txt

Timer

tmr

Vertical scroll bar

vsb

Image list

iml