Deck 3: Methods and Behaviors

Question 1

A semicolon is placed on the end of a method heading following the parameter list.

Answer 1

False

Question 2

The entries found inside the parentheses of the method heading are called the access modifiers.

Answer 2

False

Question 3

The definition of the method includes the entry inside the curly braces, which is sometimes called the body of the method.

Answer 3

False

Question 4

A standard convention used by programmers for naming classes is to use an action verb phrase.

Question 5

In order to hold the screen when the program runs, programmers often add ReadKey( ) as a last statement.

Question 6

Console applications require a Main( ) method, unlike Windows applications that do not require a Main( ) method.

Question 7

The body of a method can include statements that declare other methods.

Question 8

If a method does not return a value, the void keyword is placed inside the parentheses in the method heading.

Question 9

One required entry for a method heading is the return type.

Question 10

Methods may be defined in any order and placed anywhere in the file, in or outside of the class.

Question 11

The following are examples of the access modifiers available in C#: public, personal, protected.

Question 12

In order to indicate a value is constant and cannot be changed, the keyword constant is added.

Question 13

In order to call a static method from another class, the class name must be used with the method name.

Question 14

Methods are the members of a class that perform an action, and through writing methods you describe the behavior of data.

Question 15

The name of the method, modifiers, return type, and the types of its formal parameters make up the signature of the method.

Question 16

A standard convention used by C# programmers is to use Pascal case style for class, data member identifiers, and method identifiers.

Question 17

The accessibility modifier identifies what type of value is returned when the method is completed.

Question 18

The Console class is defined in the System namespace.

Question 19

The Read( ) method is different from the ReadLine( ) method in that the Read( ) returns an int and the ReadLine( ) returns a string argument.

Question 20

The Write( ), WriteLine( ), Read( ), and ReadLine( ) methods are all overloaded.

Question 21

WriteLine("Final Grade = {0:N2}", CalculateGrade(90, 75, 83));
In the statement above, the values placed inside the parentheses following CalculateGrade are ____.

A) arguments to the method
B) formal parameters of the method
C) printed at runtime
D) values being returned from the method

Question 22

Which of the following is a user-defined method?

A) Parse( )
B) Write( )
C) Main( )
D) Pow( )

Question 23

Methods can be defined globally outside of a class in C#.

Question 24

____ is added to hold the screen when the program runs.

A) Hold( )
B) return
C) Read( )
D) Pause( )

Question 25

The return type is physically placed ____.

A) immediately preceding the name of the method
B) inside the method
C) as the first entry in the method heading
D) immediately following the name of the method

Question 26

The first line of a method is called the ____ of the method.

A) signature
B) definition
C) heading
D) declaration

Question 27

One way to ensure that you have one entry and one exit from a method is to include a single return statement as the last statement in the method.

Question 28

Ceiling( ), Pow( ), and Floor( ) are all static members of the Console class.

Question 29

Both out and ref parameter types cause a method to refer to the same variable that was passed into the method.

Question 30

The Parse( ) method returns the number representation of its string argument.

Question 31

The definition of the method ____.

A) is the same as the heading for the method
B) is the body of the method
C) includes everything between the curly braces
D) includes the heading and the body

Question 32

C# offers both call by value and call by reference parameters. Call by value is the default type.

Question 33

When a distinction is made between parameters and arguments, ____.

A) actual arguments appear in the method heading
B) parameters are the values used to call the method
C) formal parameters appear in the method heading
D) actual arguments are part of the formal parameters

Question 34

The return keyword may not be included with a non-value returning method (void method).

Question 35

WriteLine("Final Grade = {0:N2}", CalculateGrade(90, 75, 83));
In the statement above, CalculateGrade(90, 75, 83) is ____.

A) a method call
B) a method declaration
C) an identifier for the class
D) a parameter for the WriteLine( ) method

Question 36

Calls to ____ methods use the class identifier instead of the object identifier as the method qualifier.

A) value returning
B) static
C) private
D) predefined

Question 37

Methods that use the static modifier are called class methods.

Question 38

WriteLine("Final Grade = {0:N2}", CalculateGrade(90, 75, 83));
The {0:N2} above indicates the ____.

A) first argument should display no digits to the right of the decimal
B) first argument should display two digits to the right of the decimal
C) the argument should be displayed with 0 digits to the left of the decimal and two digits to the right of the decimal
D) the argument should be displayed with 0 digits to the right of the decimal and two digits to the left of the decimal

Question 39

The definition for a method includes just the heading. The signature includes the heading and the body of the method.

Question 40

A namespace is really nothing more than a group of statements placed together under a single
name.

Question 41

When you assign a default value to a parameter, it then becomes a(n) ____.

A) named parameter
B) static parameter
C) method parameter
D) optional parameter

Question 42

The Math class has a number of static methods located in the ____ namespace.

A) Math
B) System
C) IO
D) Arithmetic

Question 43

double answer = Math.Pow(3, 2);
The result of the call to Math.Pow( ) in the above statement is to store ____ in answer:

A) 9
B) 3, 2
C) 6
D) an error message

Question 44

public static int Abs(int)
Which of the following would be a valid call to the above method?

A) answer = Abs(-23);
B) answer = int Math.Abs(-23)
C) answer = Math.Abs(-23)
D) answer = int Abs(-23)

Question 45

The ____ parameter type cannot be used unless the original argument is initialized before it is sent to the method.

A) ref
B) in
C) out
D) params

Question 46

An advantage of using named parameters is: ____.

A) program runs more efficiently because the named parameters can be accessed
B) program runs faster
C) you can send in values through using the names of the parameters instead of having to worry about getting the exact order
D) default values can be used

Question 47

Method names should be defined with meaningful names using ____.

A) camel case
B) singular nouns
C) upper case characters
D) verb phrases

Question 48

Which of the following is NOT a parameter type?

A) out
B) in
C) ref
D) params

Question 49

Which method returns the largest whole number less than or equal to the specified number?

A) Max( )
B) Ceiling( )
C) Floor( )
D) Largest( )

Question 50

The ____ of an identifier is the region of the program in which that identifier is usable.

A) access
B) scope
C) modifier
D) declaration

Question 51

public static void Main( )
The access modifier in the heading above is the keyword ____.

A) public
B) static
C) void
D) Main( )

Question 52

In order to call or invoke a nonvalue-returning method, enter the ____.

A) access modifier followed by the method identifier and list of arguments
B) return type followed by the method identifier and list of parameters
C) method's identifier followed by list of arguments
D) access modifier, return type, and method's identifier followed by list of parameters

Question 53

Unless a using statement is added to include the Math class, calls to members like Round( ), Max( ), and Exp( ), must be called using the class name, because they are all ____.

A) static methods
B) objects
C) predefined methods
D) private methods

Question 54

Which of the following methods are not overloaded?

A) WriteLine( )
B) Write( )
C) ReadLine( )
D) Abs( )

Question 55

The Read( ) method ____.

A) is a nonvalue-returning method
B) returns a string
C) returns a single char
D) returns an int

Question 56

public static void Main( )
The return type for the method above is ____.

A) public
B) static
C) void
D) Main( )

Question 57

The ____ specifies what kind of information is returned when the body of the method is finished executing.

A) access modifiers
B) parameters
C) static modifier
D) returnType

Question 58

A method that does not return any value on exit, ____.

A) must be called with the void keyword
B) cannot include the return keyword
C) must be defined to have a void return type
D) is not allowed in C#

Question 59

A method used to convert from one base type to another is ____.

A) ChangeValue( )
B) Convert( )
C) ToDouble( )
D) Convert.ToDouble( )

Question 60

The primary difference between call by reference using ref versus out is ____.

A) ​ref requires the original argument be initialized, out doesn't
B) ​out can only be used with integral memory types, ref can be used with any type
C) ​ref requires the keyword ref be included in the call and heading, out doesn't
D) ​ref is pass by reference

Question 61

All programs consist of at least one ____________.

Question 62

Every method that has a return type other than ________ must have a return statement in the body.

Question 63

When naming a(n) ____________, use an action verb phrase.

Question 64

Calls to ____________ methods must be placed at a location in your code where the value could be accepted when the method is finished.

Question 65

The ____________ type is always listed immediately preceding the name of the method.

Question 66

____________ is an overloaded method of the Math class that returns the larger of two
specified numbers.

Question 67

One option to holding the screen at the end of a program is to invoke Console.Read( ). Another option is to call ____________. It obtains the next character or function key from the user.

Question 68

The term ____________ is often used to indicate where an identifier has meaning and can be used

Question 69

All Main(  ) method headings must include the ____________ modifier meaning that the  method belongs to the type itself rather than to a specific object of a class.

Question 70

When you assign a default value to a parameter, it then becomes a(n) ____________ parameter.

Question 71

Call by ____________ is the default parameter type.

Question 72

Avoid writing long methods. Consider refactoring when the method exceeds ____________ lines of code

Question 73

When naming local variable identifiers and parameters, use ____________.

Question 74

Methods that use the static m odifier are called _________ methods.

Question 75

____________ is used to indicate that no value is being returned from a method.