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Exam 5: Loops, Files, and Random Numbers

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Question 51

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A file's ____________ marks the location of the next item that will be read from the file.

A) line marker
B) index value
C) read position
D) newline character

E) B) and D)
F) B) and C)

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Question 52

True/False

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If a Random object uses the same seed value each time it is created, it always generates the same series of random numbers.

A) True
B) False

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Question 53

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If you call Random.Next( ), the resulting random values will be between 1 and 2,147,483,647.

Most programming languages provide two different ways to access data stored in a file: sequential access and direct access.

The second expression appearing in the header of a for loop is the _____________, which is a Boolean expression that determines whether the loop will repeat.

In the header of a for loop, which expression should not end with a semicolon?

If a loop does not have a way of stopping, it is called a(n) ____________.

____________ are commonly used to control the number of times a loop iterates.

The expression ____________ causes an object of the Random class to be created in memory.

You can specify the directory to be initially displayed by the Open dialog box by storing its path in the ____________.

The increment operator is ____________.

You can use the StreamWriter class's ____________ method to write a line of text to a file.

In general, there are three types of files: text, binary, and bitmap.

If the user clicks the Cancel button, the SaveFileDialog control's ShowDialog method returns the value ____________.

In code, you can display a Save As dialog box by calling the SaveFileDialog control's ____________ method.

To add an item to a ListBox control with code, you call the control's ____________method.

You can change the default text displayed in the Save As dialog box's title bar by changing the SaveFileDialog control's DisplayText property.

In order to write data to a text file, you must create a file object using the ____________.

You can use the WriteLine or Write methods from the StreamReader class to write numbers to a text file, but the numbers are converted to strings.

In the update expression of a for loop, you must use the ++ operator in the increment expression.