a) The comma (,) formatting flag in a format specifier (e.g., %,20.2f) indicates that a value
should be output with a thousands separator.
b) To test for a range of values in a switch statement, use a hyphen (–) between the start
and end values of the range in a case label.
c) Listing cases consecutively with no statements between them enables the cases to perform
the same set of statements.
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