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- If you are extracting integer or floating-point values from the
- stream and these characters are preceded by blanks, the results
- will be unpredictable if you do not skip whitespace. In this
- example, if the series of characters that are extracted for
- first_val and sec_val are preceded by blanks, the values assigned
- to first_val, sec_val, and third_val do not equal the values in
- the input stream.
-