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Assume amount is a decimal variable that has been assigned a value. The following interpolated string formats the value of the amount variable as currency:$”The amount is {amount:Curr}”;

The default value of a string array’s elements is null.

In the following statement, the car variable is argument 1: string message = String.Format(“I own a blue {0}.”, car);

When keeping a running total, the accumulator variable can start with any value and still contain the correct total when the loop finishes.

In order for a program to work with a file on the computer’s disk, the program’s code must create a file object in memory.

Any data the user enters into a TextBox control is stored in the control’s Text property as a string, even if it is a number.

A binary file may be opened and viewed in a text editor such as Notepad.

There are always three steps that must be taken when a file is used by a program: opening the file, processing the file, and closing the file.

If the expression on the left side of the || operator is true, the expression on the right side is not checked.

Check boxes are similar to radio buttons in that they are both mutually exclusive.