Deck 3: Ifthenelse Control Structure

Question 1

A diamond shape symbol on a program flowchart represents a decision to be made.

Answer 1

True

Question 2

The keyword ELSE is not needed when writing the pseudcode of a null ELSE.

Answer 2

False

Question 3

If the variable named ANSWER has a value of 1,what will be output after the instructions corresponding to the following pseudocode are executed?
IF ANSWER $= 1 \mathrm { THEN }$ Write "Hello"
(ELSE)
$\mathrm { ENDIF }$
IF ANSWER $= 2$ THEN
Write "Goodbye"
ELSE
Write "Good day",
ENDIF

A)Hello
B)Goodbye
C)Good day
D)both a and c

Answer 3

both a and c

Question 4

Which of the following terms is an example of a character-string constant?

A)123
B)ABC
C)GRADE
D)none of the above

Question 5

Which program flowcharting symbol is used as a collector,emphasizing the single exit point of an IFTHEN control structure?

A)decision
B)connector
C)terminal interrupt
D)process

Question 6

An algorithm can be expressed by the use of an informal language called

A)BASIC
B)Visual Basic
C)pseudocode
D)flowcharting

Question 7

If the variable named AVG has a value of 73,what is the value of GRADE after the instructions corresponding to the following pseudocode are executed?
IF $\mathrm { AVG } > 93 \mathrm { THEN }$
GRADE $=$ "A"
ELSE
GRADE $=$ "B"
ENDIF
IF $\mathrm { AVG } > 73$ THEN
GRADE $=$ "C"
ELSE
GRADE $=$ "F"
ENDIF

A)A
B)B
C)C
D)F

Question 8

If the variable named AVG has a value of 93,what is the value of GRADE after the instructions corresponding to the following pseudocode are executed?
IF $A V G > 93$ THEN
GRADE = "A"
ELSE
IF $A V G > 83$ THEN
ELSE $\begin{array} { l } \text { GRADE } = \text { "B" } \\ \text { GRADE } = \text { "P", } \end{array}$
ENDIF
ENDIF

A)A
B)B
C)C
D)F

Question 9

Which program flowcharting symbol is used to indicate a choice between two alternative paths?

A)process
B)general input/output
C)terminal interrupt
D)decision

Question 10

If the variable named AVG has a value of 73,what is the value of GRADE after the instructions corresponding to the following pseudocode are executed?
IF AVG $> 93$ THEN
GRADE = "A"
ELSE
IF $\mathrm { AVG } > 83$ THEN
GRADE = "B"
ELSE
GRADE = "P"
ENDIF
ENDIF

A)A
B)B
C)P
D)none of the above

Question 11

The no-function condition is usually called a null ELSE.

Question 12

If the variable named ANSWER has a value of 1,what will be output after the instructions corresponding to the following pseudocode are executed?
IF ANSWER $= 1$ THEN
Write "Hello"
ELSE
IF ANSWER $= 2$ THEN
Write "Goodbye"
ELSE
Write "Good day"
ENDIF
ENDIF

A)Hello
B)Goodbye
C)Good day
D)both a and c

Question 13

If no special alternative action is required when the condition tested in an IFTHENELSE pattern is false,we refer to this as a

A)null ELSE
B)IFTHENELSE
C)conditional branch
D)nested pattern

Question 14

The following pseudocode
IF AVG $> 93$ THEN GRADE = "A" ELSE
GRADE = "B"
ENDIF
IF $\mathrm { AVG } > 73$ THEN
GRADE $=$ " $\mathrm { C }$ ",
ELSE
GRADE = "F "
ENDIF
Represents a

A)sequential IFTHENELSE pattern
B)nested IFTHENELSE pattern
C)null IFTHENELSE pattern
D)simple IFTHENELSE pattern

Question 15

In a nested IFTHENELSE pattern,all the tests are always made,one after the other.

Question 16

In a sequential IFTHENELSE pattern,whether tests after the first one are made depends upon the outcome of the preceding tests.

Question 17

The following pseudocode
IF AVG $> 93$ THEN
GRADE $=$ "A"
ELSE
IF $A V G > 83$ THEN
GRADE $=$ "B"
ELSE
GRADE $=$ "P"
ENDIF
ENDIF
Represents a

A)sequential IFTHENELSE pattern
B)nested IFTHENELSE pattern
C)null IFTHENELSE pattern
D)simple IFTHENELSE pattern

Question 18

The following pseudocode
IF AVG $> 93$ THEN GRADE $=$ "A"
(ELSE)
ENDIF
Represents a

A)sequential IFTHENELSE pattern
B)nested IFTHENELSE pattern
C)null IFTHENELSE pattern
D)simple IFTHENELSE pattern

Question 19

If the variable named AVG has a value of 93,what is the value of GRADE after the instructions corresponding to the following pseudocode are executed?
IF $\mathrm { AVG } > 93 \mathrm { THEN }$
$\begin{array} { l } \text { GLSA } \quad \text { GRE } = \text { "A" } \\ \text { GRADE } = " \mathrm {~B} " \end{array}$
ENDIF
IF $\mathrm { AVG } > 73 \mathrm { THEN }$
GRADE $=$ " $\mathrm { C }$ ",
ELSE
GRADE = "F"'
ENDIF

A)A
B)B
C)C
D)F

Question 20

If the variable named GRADE has a value of 95,which of the following statements will cause the line
95 is above average
To be output?

A)Write "GRADE is above average"
B)Write GRADE is above average
C)Write GRADE,"is above average"
D)Write "GRADE,is above average"

Question 21

A connector symbol is placed at the entry point of an IFTHENELSE control structure.

Question 22

The value of a character-string constant is usually enclosed in either single or double quotes.

Question 23

Indentation is used in pseudocode to improve readability.

Question 24

A nested IFTHENELSE pattern cannot contain a null ELSE.

Question 25

The decision point in an IFTHENELSE statement is called an unconditional branch.

Question 26

Pseudocode is a graphic depiction of an algorithm.

Question 27

The statements Write A and Write "A" will always produce the same output.

Question 28

Pseudocode may be a more suitable tool than flowcharting when working on complex problems.

Question 29

In a nested IFTHENELSE pattern,it is probable that many of the tests will be skipped.

Question 30

There is no ANSI-approved standard for pseudocode.