Question 1

What are the components of a C# method declaration?

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Question 2

Match between columns
                        Premises: Receives a copy of the value passed to it
Optionally present within parentheses after the method name in a method declaration
Can only be used in conjunction with an object
One that calls another method
A method's complete name including its class
The return type for a method that returns either true or false
What is received by an invoked method when an object is passed to it by reference
This kind of variable is declared within a method and is not known to other methods
A variable declared within a class but outside of the class's methods

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Question 3

What are the components of a C# method?

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Question 4

Every method has a(n) ____________________, indicating what kind of value the method will return to any other method that calls it.

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Question 5

You indicate that a method parameter is an array by placing ____ after the data type in the method's parameter list.

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The correct way to indicate that a method parameter is an array is by placing square brackets [] after the data type in the method's parameter list.

Question 6

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?

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Question 7

You can tell a lot about a built-in method when you see how it is used. What can you tell about the built-in Pow() method (used to raise a number to a power) from the following statement? 
double result = Math.Pow(2.0, 3.0);

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Question 8

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?

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Question 9

If a method does not return a value, its return type is ____________________.

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Question 10

A(n) ____________________ is an encapsulated series of statements that carry out a task.

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Question 11

A method ____________________ is a block of statements that carry out the method's work.

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Question 12

If you create a Click() method that responds to button clicks, it will be ____ by default because it is associated with an object that is a Form .

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The Click() method is associated with an object that is a Form, which means it is an instance method and not a static method. Therefore, the best choice is D) nonstatic. A local method would only be accessible within the method where it was declared, and a qualified method would have a namespace or class name attached to it, which is not applicable in this scenario.

Question 13

A method ____________________ defines the rules for using the method and can include accessibility, static, and return type modifiers.

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Question 14

A ____ statement causes a value to be sent back to the calling method.

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The return statement causes a value to be sent back to the calling method. The break statement is used to terminate a loop or switch statement. The result and continue statements are not valid statements in Java.

Question 15

When you place a Button named okButton on a Form in the IDE and double-click it, a method is automatically generated with the following header: ____ okButton_Click( object sender, EventArgs e) .

Accepted Answer

The method generated for the okButton is an event handler and is typically kept private. Therefore, the best choice for the method header would be B) private void since it is accessible only within the class and does not return anything.

Question 16

When method calls are placed inside other method calls, the calls are ____ method calls.

Accepted Answer

When method calls are placed inside other method calls, they are called nested method calls.

Question 17

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

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Question 18

When an array passed to a method is passed by ____, the method receives the actual memory address of the array and has access to the actual values in the array elements.

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Arrays are always passed by reference in Java. This means that the method being called receives a reference to the same array object in memory that was passed to it, rather than a copy of the array or its elements. This allows the method to modify the contents of the original array, which can be useful in many programming scenarios.

Question 19

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.

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Question 20

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

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Quiz 7: Using Methods