Topic 2

Question 1

When solving a programming problem, try to use a

Answer 1

Modular Approach

Question 2

is a program consisting of interrelated statements arranged in logical and understandable form

Answer 2

modular program

Question 3

is referred to as a small segment which is designed to perform a specific task

Answer 3

Module

Question 4

is a symbolic identifier for a memory address where data can be held

Answer 4

variable

Question 5

used to name storage locations

Answer 5

Variable

Question 6

is a memory location whose contents can
vary, also called an identifier

Answer 6

variable

Question 7

Name must be a __________,
but can be formed from several
words

Answer 7

single word

Question 8

First character must be a ________
or _____________

Answer 8

letter, underscore

Question 9

Only ______, ______, and ____________ may follow the initial letter ( no blanks or spaces allowed )

Answer 9

letters, digits, underscore

Question 10

____________ cannot be used as
identifiers

Answer 10

Keywords

Question 11

Variable names are ____ __________

Answer 11

case sensitive

Question 12

Keywords are also referred to as ________ _____, for they cannot be used as variable names

Answer 12

reserved words

Question 13

Conventions

Answer 13

• Use underscore to separate
  words, for readability
• Or, capitalize the first letter of
  each word (Pascal Case)
• Be mindful of using some characters:

Question 14

Invalid Identifiers

Answer 14

• begins with a number
• contains a special character
• a keyword

Question 15

: ordering of data types
by size

Answer 15

Data Hierarchy

Question 16

: single symbol
*“A”, “7”

Answer 16

Character

Question 17

: group of characters forming a
single data item
* “smith”

Answer 17

field

Question 18

: a group of related fields
* Customer record containing name and
address fields

Answer 18

Record

Question 19

: a group of related records
* Customer file, containing all customer
records

Answer 19

File

Question 20

: collection of related files,
called tables, that serve the
information needs of the organization

Answer 20

Database

Question 21

Two basic data types:

Answer 21

• text
• numeric

Question 22

____________ stored by numeric
variables

Answer 22

Numeric data

Question 23

stored by string, text, or
character variables

Answer 23

Text data

Question 24

Values that do not change while the
program is running

Answer 24

constants

Question 25

A specific numeric value that does not change.

Answer 25

Numeric Constant

Question 26

String of characters enclosed within “ “.

Answer 26

String Constant

Question 27

Do not have identifiers like variables do

Answer 27

Unnamed Constants

Question 28

: whole numbers only

Answer 28

integer

Question 29

: fractional numeric values with decimal points

Answer 29

floating-point

Question 30

Assignment statement :

Answer 30

* Assigns a value to a variable * Variable must appear on the left side, value on the right side of the assignment operator * Right side may be an expression that will be evaluated before storing the value in the variable

Question 31

Assignment operator :

Answer 31

: the equal sign (=) in most languages *Always operates from right to left.

Question 32

Used to store a value into a variable

Answer 32

Assignment statement

Question 33

Specifies the data type and identifier of a variable. It sets up the memory location

Answer 33

Declaration Statement

Question 34

Common Programming errors

Answer 34

* Substituting letter O for zero (0) and vice versa * Failing to declare ALL variables * Storing incorrect data type into a variable * Attempting to use a variable with no value * Dividing integer values incorrectly * Mixing data types in the same expression

Question 35

holds digits and perform mathematical operations on it, also decimals and +/-.

Answer 35

Numeric Variable

Question 36

can hold text, letters of the alphabet, and special characters like “!”.

Answer 36

String variable

Question 37

only if it is the correct type.

Answer 37

Assign Data to a variable

Question 38

Similar to a variable and can only be assigned a value once. A useful name should be assigned to a value that will never change throughout the execution

Answer 38

Named Constant

Question 39

An unnamed constant with no immediate apparent purpose. Should be avoided.

Answer 39

Magic Number