Chp 2_ Data Processing AI V2

Question 1

What is the information systems process?

Answer 1

Input, process, output

Question 2

What distinguishes data types?

Answer 2

Kinds of data variables hold

Question 3

Syntax to declare a variable?

Answer 3

DataType VariableName;

Question 4

Variable naming rule first character?

Answer 4

Letter or underscore

Question 5

How to read inputs and format outputs?

Answer 5

Use TextBox.Text and ToString()

Question 6

What converts data types when reading?

Answer 6

Parse and cast operators

Question 7

Use arithmetic operators for?

Answer 7

Perform calculations

Question 8

Role of Variables?

Answer 8

Memory storage locations

Question 9

Role of Data Types?

Answer 9

Define variable data kind

Question 10

Operators perform?

Answer 10

Arithmetic and logical operations

Question 11

Strings?

Answer 11

Sequences of characters

Question 12

String concatenation operator?

Answer 12

+

Question 13

Math Functions class?

Answer 13

System.Math methods

Question 14

Why process data?

Answer 14

Crucial for applications

Question 15

What will this topic explore?

Answer 15

Data types, storage, processing

Question 16

What is input?

Answer 16

Data entry via devices

Question 17

What is process?

Answer 17

CPU operations on data

Question 18

What is output?

Answer 18

Processed data displayed

Question 19

TextBox control?

Answer 19

Rectangular keyboard input area

Question 20

TextBox location?

Answer 20

Common Controls toolbox

Question 21

Add TextBox to form?

Answer 21

Double-click control

Question 22

Default TextBox name?

Answer 22

textBoxn

Question 23

What stores TextBox input?

Answer 23

TextBox.Text string

Question 24

How to clear TextBox?

Answer 24

Assign “” to Text

Question 25

Definition of variable?

Answer 25

Memory storage location

Question 26

Variable name represents?

Answer 26

Memory location

Question 27

Declare variable syntax?

Answer 27

DataType VariableName;

Question 28

Why declare data type?

Answer 28

Defines data held

Question 29

Primitive types are?

Answer 29

Fundamental types like int

Question 30

Numeric types examples?

Answer 30

int, float, double

Question 31

String example?

Answer 31

"John"

Question 32

Char example?

Answer 32

'A'

Question 33

Bool example?

Answer 33

true/false

Question 34

Naming first char?

Answer 34

Letter or underscore

Question 35

Can contain spaces?

Answer 35

No

Question 36

Use of keywords?

Answer 36

Avoid reserved words

Question 37

Value assignment syntax?

Answer 37

name = "text";

Question 38

Display in Label?

Answer 38

label.Text = var

Question 39

Show in MessageBox?

Answer 39

MessageBox.Show(var)

Question 40

Concatenation operator?

Answer 40

+

Question 41

Purpose of concatenation?

Answer 41

Join strings

Question 42

Can declare before use?

Answer 42

Yes, then assign later

Question 43

Local variable scope?

Answer 43

Inside its method

Question 44

Lifetime of variable?

Answer 44

During program execution

Question 45

Assign compatible value?

Answer 45

Value type must match

Question 46

Initialize on declaration?

Answer 46

Optional but allowed

Question 47

Multiple declarations?

Answer 47

Same type comma-separated

Question 48

int range?

Answer 48

-2^31 to 2^31-1

Question 49

double stores?

Answer 49

Real numbers

Question 50

decimal precision?

Answer 50

128-bit monetary type

Question 51

Suffix for decimals?

Answer 51

m or M

Question 52

Cast syntax?

Answer 52

(Type)variable

Question 53

Use case?

Answer 53

Convert between types

Question 54

Addition operator?

Answer 54

+

Question 55

Modulus operator?

Answer 55

%

Question 56

Order of operations?

Answer 56

Follow PEMDAS

Question 57

Mixed types result?

Answer 57

Widest type

Question 58

7/3 yields?

Answer 58

2

Question 59

To get fraction?

Answer 59

Cast operands to double

Question 60

Parse string to int?

Answer 60

int.Parse()

Question 61

Parse string to double?

Answer 61

double.Parse()

Question 62

Convert number to string?

Answer 62

var.ToString()

Question 63

Implicit conversion?

Answer 63

Using + operator

Question 64

Currency format specifier?

Answer 64

C

Question 65

Percentage specifier?

Answer 65

P

Question 66

Try-catch structure?

Answer 66

try{ } catch{ }

Question 67

Unhandled exception effect?

Answer 67

Program halts

Question 68

Use ex.Message for?

Answer 68

Default error message

Question 69

To throw exception?

Answer 69

Invalid data input

Question 70

Declare constant?

Answer 70

const Type NAME = value

Question 71

Naming constant style?

Answer 71

Uppercase by convention

Question 72

Field scope?

Answer 72

Entire class

Question 73

Declare field?

Answer 73

Outside methods in class

Question 74

Math.Sqrt(x)?

Answer 74

Square root of x

Question 75

Math.PI constant?

Answer 75

π value

Question 76

Assign mnemonic?

Answer 76

Ampersand before letter

Question 77

Access key use?

Answer 77

Alt + letter

Question 78

BackColor property?

Answer 78

Control background color

Question 79

ForeColor property?

Answer 79

Text color of control

Question 80

BackgroundImage property?

Answer 80

Form background image

Question 81

BackgroundImageLayout options?

Answer 81

Tile, Center, None, Stretch, Zoom

Question 82

GroupBox features?

Answer 82

Title and border

Question 83

Panel features?

Answer 83

No title, customizable border

Question 84

Meaning of identifier?

Answer 84

Name for variable or control

Question 85

Terminology for joining strings?

Answer 85

Concatenation

Question 86

List main topics covered?

Answer 86

Input, types, naming, ops, math, UI

Question 87

Next topic?

Answer 87

Selection structures