Quiz2-InputProcessingOutput

Question 1

The structure of the camelCase naming convention is to write the first word of the variable name in lowercase letter and then to capitalize the first character of the second and subsequent words. (T/F)

Answer 1

True

Question 2

The following two expressions will always yield identical results: (T/F)
(a + b) / c
a + b / c

Answer 2

False

Question 3

An uninitialized variable is a variable that has been declared and automatically initialized to zero. (T/F)

Answer 3

False

Question 4

A sequence of characters that is used as data is called a String. (T/F)

Answer 4

True

Question 5

In a flowchart, the symbol that represents an assignment statement is an oval. (T/F)

Answer 5

False
Not oval that’s start end
it’s a processing symbol (rectangle)

Question 6

Pseudocode is often used to plan out a program because the programmer does not have to worry about syntax rules. (T/F)

Answer 6

True

Question 7

A variable is a storage location in memory that is represented by a name and can hold different values during the execution of the program. (T/F)

Answer 7

True

Question 8

In a mathematical expression, addition and subtraction will be evaluated before multiplication (T/F).

Answer 8

False

Question 9

Variable names cannot include spaces. (T/F)

Answer 9

True

Question 10

The variable name myBookTitle
is written in camelCase convention. (T/F)

Answer 10

True

Question 11

Flowcharts and pseudocode documents are the same thing.(T/F)

Answer 11

False

Question 12

Which of the following error types produces incorrect results but does not prevent the program from running?

A) Logic

B) Syntax

C) Human

Answer 12

A) Logic errors

Question 13

The program development cycle is made up of _____ steps that are repeated until no errors can be found in the program.

Answer 13

5 steps are:
1. Requirements/analysis info
2.Designing
3.Coding
4.Testing
5.Implementation/Deployment to an audience

Question 14

_________ is an informal language used by programmers to create models of programs.

Answer 14

Pseudocode

Question 15

A(n) __________ is a diagram that graphically depicts the steps that take place in a program.

Answer 15

Flowchart

Question 16

The __________ structure consists of a set of statements that execute in the order in which they appear.

Answer 16

Sequence

Question 17

A(n) ___________ symbol is used for an assignment statement in a flowchart.

Answer 17

Processing symbol (Rectangle)

Question 18

The __________ operator is used to raise 5 to the second power.

Answer 18

Caret symbol

Question 19

What is the value of the following expression?
12 - 4*3 / 2 + 9

Answer 19

15
FOLLOW PEMDAS UNLESS INDICATED BY ()
4*3=12
12/2=6
12-6=6
6+9=15

Question 20

What is the value of the following expression?
(12 - 4) *3 / 2 + 9

Answer 20

21
DO PARANTHESIS FIRST
THEN PEMDAS LEFT TO RIGHT
(12-4)=8
8*3=24
24/2=12
12+9=21

Question 21

Which of the following is NOT a variable data type?

Numeral, Real, String, Integer.

Answer 21

Numeral

Question 22

A(n) __________ is a name that represents a value which cannot be changed during the program’s execution.

Answer 22

Named constant

Question 23

The process of stepping through each of a program’s statements, one by one to see what each statement does is known as ____________.

Answer 23

Hand tracing

Question 24

The following is an example of a(n) _____________ statement.

Set rate = 6.25

Answer 24

Assignment
(would be in the rectangle)

Question 25

Which of the following is NOT an actual programming language?

C++, Java, Pseudocode, Python, HTML

Answer 25

Pseudocode

Question 26

What is the first step of the program development cycle?

A) Write the code

B) Correct for Syntax errors

C) Design the program

Answer 26

C) Designing the Code

Question 27

What term is used for a string that appears in the actual code of a program?

Answer 27

literal string

Question 28

What symbol is used to mark the beginning and end of a string?

Answer 28

Quotation marks (“)double (‘)single

Question 29

A variable declaration typically specifies the variable’s _________ and ________.

Answer 29

Name, Data Type

Question 30

Which of the following would cause an error in a program?

A) Attempting to store a floating-point value in a variable with Integer data type

B) attempting to store a floating-point value in a variable with String data type

C) attempting to store an Integer in a variable with String data type.

D) ALL of these would cause errors

Answer 30

D) ALL of these would cause errors
syntax errors specifically

Question 31

What is the value of the variable
result in the following expression?

Set result = 6 + 8 * 4 / 2

Answer 31

22
PEMDAS
8*4=32
32/2=16
6+16=22

Question 32

What is the value of the variable result in the following expression?

Set result = (6 + 8) * 4 / 2

Answer 32

28
PARANTHESIS then PEMDAS
6+8=14
14*4=56
56/2=28

Question 33

What is the value of the variable result in the following expression?

Set result = (6 + 8) / 4 * 2

Answer 33

7
6+8=14
14/4=3.5
3.5*2=7

Question 34

What is the error in the following pseudocode?

Display “What is your name?”
Input userName
Declare String userName

Answer 34

userName has been used (line 2) BEFORE it is declared (line 3)

Question 35

What is the error in the following pseudocode?

Declare String user
Display “How many widgets do you want to buy?”
Input user

Answer 35

The input variable “user” was declared a String. But “user” should be a number (integer or real) not a string (characters).

Question 36

What is the error in the following pseudocode?

Declare Integer widgets
Declare Real cost
Set widgets = 3.5
Set cost = widgets * 5

Answer 36

widgets was declaed as an Integer but it should be a REAL because the value= 3.5.
integers cannot hold a floating-point values (numbers with decimals or negatives).