Deck 4: Introduction to Control Statements

Question 1

Some programmers prefer to use for loops instead of while loops because the loop control variable can be declared in its header. ____________________

Answer 1

True

Question 2

Use an if statement to instruct a program to execute one statement if the condition is true, and another if the condition is false.

Answer 2

False

Question 3

Because it returns a value of true or false, the condition in an if statement must be a(n) ____ expression.

A) Boolean
B) control
C) else
D) entry-controlled

Answer 3

A

Question 4

An off-by-one error occurs when the value returned is one more or less than the expected result.

Question 5

When a program responds more slowly than expected, it is reasonable to assume that it is stuck in an overloading loop. ____________________

Question 6

____ must always occur in pairs.

A) Semicolons
B) Conditions
C) Statements
D) Braces

Question 7

A program that controls how many times a loop is executed is called a task-controlled loop. ____________________

Question 8

m++ and m = m + 1 are the same thing.

Question 9

____ is when the same name is used for two different methods.

A) Infinite loop
B) Overloading
C) Iteration
D) Sentinel

Question 10

In a while statement, if the condition is false from the outset, the statement(s) inside the loop never execute.

Question 11

A program can output data to a file.

Question 12

In a for statement, the counter is updated at the top of the loop.

Question 13

It is better to underuse braces or parentheses than to overuse them.

Question 14

FIGURE 4-1
Figure 4-1 above is an example of a flowchart. _________________________

Question 15

A program used to simulate coin toss results uses a random number generator.

Question 16

For a loop to terminate, each pass must move the variables in the condition significantly closer to satisfying the condition.

Question 17

In Java, while and if-else are examples of conditional statements. ____________________

Question 18

An if-else statement is commonly used to check user inputs for validity before processing them.

Question 19

The decrement operator is ____.

A) --
B) ++
C) /
D) !=

Question 20

If a method's signature is labeled ____, the message is sent to the method's class instead of to an object.

A) class
B) iterative
C) static
D) count-controlled

Question 21

In a text file, numeric data can be separated by any of the following EXCEPT ____.

A) return
B) space
C) tab
D) newline

Question 22

Data can be output to a text file using the class ____.

A) Scanner
B) WriteData
C) PrintWriter
D) TextFile

Question 23

Carter thinks his program is stuck in an infinite loop. What should he do to his PC to make it stop?

A) Unplug the computer.
B) Press Ctrl+C.
C) Press Ctrl+Alt+Delete.
D) Restart the computer.

Question 24

Gabrielle is using a text file to input the list of numbers. Which of the following is NOT true?

A) If the file is missing, the JVM will thrown an I/O exception.
B) The numbers must be separated by whitespace characters.
C) Gabrielle uses the PrintWriter class to read the data in the text file.
D) The text file must contain a special character that marks the end of the file.

Question 25

An I/O exception is in the category of ____ exceptions.

A) thrown
B) checked
C) run-time
D) overloading

Question 26

The ____________________ operator decreases a variable's value by one.

Question 27

A(n) ____ is a special value that marks the end of a list.

A) break
B) sentinel
C) counter
D) iteration

Question 28

In a(n) ____-controlled loop, the continuation condition is tested at the top of the loop on each pass.

A) task
B) entry
C) count
D) All of the above

Question 29

A(n) ____ is a small window that asks for information, and includes a text field and command buttons.

A) panel
B) message dialog box
C) task pane
D) input dialog box

Question 30

The ____ statement is used to write count-controlled loops.

A) for
B) number
C) cntr
D) if-else

Question 31

The____ operator means not equal to.

A) --
B) = =
C) <=
D) !=

Question 32

The presence or absence of the ____ symbol(s) can seriously affect the logic of a selection statement.

A) { }
B) //
C) ;
D) /* */

Question 33

Which of the following is true about using a text file for input?

A) The data set can be much larger.
B) Data can be input faster and with less chance of error.
C) Data can be used repeatedly with the same program or with different programs.
D) All of the above are true.

Question 34

Use a(n) ____ statement rather than two if statements when the alternative courses of action are mutually exclusive.

A) while
B) for
C) if-else
D) whether

Question 35

A loop that continues until something specific is accomplished is called a(n) ____-controlled loop.

A) count
B) entry
C) task
D) outcome

Question 36

FIGURE 4-2
Figure 4-2 above represents the behavior of a(n) ____ statement.

A) if-else
B) while
C) random
D) infinite

Question 37

To get out of a loop prematurely, use a(n) ____ statement.

A) exit
B) false
C) break
D) then

Question 38

A typical loop has four component parts, including all of the following EXCEPT ___ statements.

A) initializing
B) body
C) update
D) verification

Question 39

Each pass through a loop is called a(n) ____________________.

Question 40

The ____________________ operator increases a variable's value by one.

Question 41

Identify the letter of the choice that best matches the phrase or definition.
a.Random
b.Update
c.Abs
d.Exception
e.Break
What happens when a program encounters an operation that it cannot perform at runtime.

Question 42

____________________ statements execute within each pass and implement the calculation in question.

Question 43

Identify the letter of the choice that best matches the phrase or definition.
a.Random
b.Update
c.Abs
d.Exception
e.Break
A statement that changes the values of the variables tested in the termination condition.

Question 44

Identify the letter of the choice that best matches the phrase or definition.
a.Random
b.Update
c.Abs
d.Exception
e.Break
Exits a loop before the condition is false.

Question 45

Identify the letter of the choice that best matches the phrase or definition.
a.Random
b.Update
c.Abs
d.Exception
e.Break
A method in the Math class.

Question 46

A(n) ____________________ control statement is located inside another control statement.

Question 47

Identify the letter of the choice that best matches the phrase or definition.
a.Random
b.Update
c.Abs
d.Exception
e.Break
A class used to simulate stock market fluctuations.