Chapter 8 - Programming

Question 1

What is a variable

Answer 1

Named data store that may change the execution of a program

Question 2

What is a constant

Answer 2

Named data store that contains a value that does not change during the execution of a program

Question 3

What are the 5 basic concepts of programming

Answer 3

Data use
Iteration
Sequence
Selection
Operator use

Question 4

What is data use

Answer 4

Variables, constants and arrays

Question 5

What is sequence

Answer 5

The order of steps in a task

Question 6

What is selection

Answer 6

Choosing a path through a program

Question 7

What is iteration

Answer 7

Repitition of a sequence of steps in a program

Question 8

What is operator use

Answer 8

Arithmetic for calculations
Logical and boolean for decisions

Question 9

What does the different data types enable(3)

Answer 9

Data to be stored appropriately
Data to be effectively manipulated
Automatic validation

Question 10

What are the 5 basic data types

Answer 10

Integer
Real
Char
String
Boolean

Question 11

What is boolean

Answer 11

A variable constant that can only have 2 values
TRUE or FALSE

Question 12

What is a string

Answer 12

A variable/constant that is several characters in length or has no characters which is an empty string

Question 13

What does it mean if a number is stored in a string

Answer 13

The number cannot be used ofr calculations

Question 14

What is a char

Answer 14

A variable/constant that is a single character

Question 15

What are the basic concepts to be used when solving a problem (6)

Answer 15

Sequence.
Selection.
Iteration.
Counting and totalling.
String handling.
Use of operators.

Question 16

Declare

Answer 16

To define the value and data type of a variable or constant

Question 17

Iteration

Answer 17

Section of programming code that can be repeated under certain conditions

Question 18

Operator

Answer 18

Special character/word in a programming language that identifies an action to be performed

Question 19

Arithmetic operator

Answer 19

An operator that is used to perform calculations

Question 20

Logical operator

Answer 20

Operator that is used to decide the path to take through a program if the expression formed is true or false

Question 21

Boolean operator

Answer 21

Operator that is used with logical operators to form more complex expressions

Question 22

Nesting

Answer 22

The inclusion of one type of code construct inside another

Question 23

Procedure

Answer 23

Set of programming statements grouped together under a single name which can be called to perform a task in a program rather than including a copy of the code every time the task is performed

Question 24

Function

Answer 24

Set of programming statements grouped together under a single name which can be called to perform a task in a program rather than including a copy of the code every time the task is performed and returns a variable back to the main program

Question 25

Global variable

Answer 25

variable that is declared outside a user defined function

Question 26

Local variable

Answer 26

variable declared inside a user defined function