Deck 7: Using Methods

Question 1

What is a method that uses another method considered to be?

A) a method peer
B) a server method
C) a method pair
D) a client of the other method

Answer 1

D

Question 2

A formal parameter that receives a copy of the value passed to it is an example of what type of parameter?

A) reference
B) output
C) input
D) value

Answer 2

D

Question 3

A parameter within a method header that accepts a value is considered to be what type of parameter?

A) formal parameter
B) local parameter
C) global parameter
D) actual parameter

Answer 3

A

Question 4

What keyword modifier indicates that a method can be called by referring to the class rather than an object from the class?

A) static
B) internal
C) protected
D) nonstatic

Question 5

What accessibility modifier limits method access to the class that contains the method?

A) protected
B) private
C) protected internal
D) internal

Question 6

What technique allows a programmer to change the way in which a method works internally without affecting programs that utilize the method?

A) overloading
B) implementation hiding
C) polymorphism
D) inheritance

Question 7

When can a method be called with fewer arguments than exist in the parameter list for the method?

A) Only when default arguments are defined for the method.
B) Only when value parameters are passed by other parts of the program.
C) Only when scope relaxation is used to allow global variables.
D) Only when the parameters are marked as non-critical parameters.

Question 8

What is the return type of the ReadLine() method call?

A) int
B) Object
C) bool
D) string

Question 9

A declaration for a method that receives two or more arguments must list the type for each parameter separately only if the parameters have different types.

Question 10

If you do not provide an accessibility modifier for a method, it is private by default.

Question 11

The process of calling a method's name and using the method to perform a job for a class is also known by what term?

A) instantiating the method
B) overloading the method
C) inheriting the method
D) invoking the method

Question 12

Arrays, like all objects, are passed by value.

Question 13

To more easily incorporate methods into a program, it is common practice to store methods in their own classes and files.Then you can add them into any application that uses them.What is the resulting compound program called?

A) a compound interface
B) a multifile assembly
C) a hid assembly
D) a hid implementation

Question 14

Variables and constants that are declared within a method are only available until the end of the method.Why is this?

A) The method's variables exist within a scope, and are only visible within the method.
B) The variables utilize defined locality.
C) The variables are not configured for accessibility.
D) Variables do not support nesting in C#.

Question 15

What accessibility modifier allows access to a method from other classes?

A) public
B) protected
C) private
D) protected internal

Question 16

A method can return, at most, one value to a method that calls it.

Question 17

What optionally declared method modifier can set limits as to how other methods are able to use the method?

A) protection
B) qualifier
C) accessibility
D) type

Question 18

What term is used to describe any device you can use without knowing how it works internally?

A) white box
B) interface
C) black box
D) method

Question 19

What is the name for a variable that holds data passed to a method when it is called?

A) element
B) parameter
C) literal
D) declaration

Question 20

The type of an argument in a method call must exactly match the type of the corresponding parameter specified in the method declaration.

Question 21

Under what circumstances will a method receive the actual memory address of a passed array, and be able to alter values in the original array?

A) Only when it is passed by reference.
B) Only when it is passed by value.
C) Only when the array is inherited.
D) Only when the array is within the method's scope.

Question 22

What are the two most common accessibility levels in C#?

Question 23

For a method that accepts a parameter, what are the components of the parameter definition that must be included in the method declaration? Show an example of a method declaration with a parameter.

Question 24

When a method resides entirely within another method, and can only be called from within the containing method, what is the method known as?

A) It is a local function.
B) It is a client function.
C) It is a parent function.
D) It is a scope function.

Question 25

Write a DisplaySalesTax() method that receives the sales amount and tax rate as doubles, and calculates and displays the sales tax.The method does not return a value.

Question 26

When a variable or constant is required by multiple methods in a GUI program, where should it be defined?

A) Inside one of the methods used by the GUI.
B) Inside a nested method shared by both methods.
C) Outside of the methods, but inside of the Form class shared by both methods.
D) Inside of an inherited class.

Question 27

When writing an event-handling method in a GUI application, what should you consider about a variable's scope?

Question 28

If no method access specifier is defined for Main(), what will it be by default?

A) public
B) static
C) private
D) inherited

Question 29

Describe how nested method calls work.For example, if you have three nested method calls, which method executes first and how are return values propagated? Is there a limit to how many method calls can be nested?

Question 30

What are the components of a C# method declaration?

Question 31

When you place a button named okButton on a Form in the IDE and double-click it, what method header is generated automatically? (Note that if you are using Visual Studio 2019, each method name will start with an uppercase letter.)

A) public void okButton_Click(object sender, EventArgs e)
B) private void okButton_Click(object sender, EventArgs e)
C) static void okButton_Click(object sender, EventArgs e)
D) private int okButton_Click(object sender, EventArgs e)

Question 32

What characters are placed after the data type in a method's parameter list to indicate that a method parameter is an array?

A) ()
B) <>
C) []
D) {}

Question 33

What statement is used to cause a value to be sent back to the calling method?

A) break
B) result
C) return
D) continue

Question 34

What are the components of a C# method?

Question 35

Explain how to write a Main() method that accepts parameters.Why might this format be used?

Question 36

How are the parameters for a Click() method received?

A) The method must be called manually by another method.
B) The method must be passed the parameters by reference.
C) The method receives the parameters automatically when the corresponding Button is pressed.
D) The method does not accept any parameters.

Question 37

What is the term used to describe the calling of a method from within another method?

A) nested method calling
B) interleaved method calling
C) method cascading
D) method children

Question 38

What will a Click() method that responds to button clicks be by default, due to the fact that it is associated with an object that is a Form?

A) local
B) static
C) qualified
D) nonstatic

Question 39

The keyword static is used with Main() methods in console applications because the method is associated with its containing class and not with an object.Why are Form methods, such as a Click() method that responds to button clicks, nonstatic?