 | | isspace returns non-zero for any space, tab, carriage return, newline, vertical tab, or form feed, and zero for anything else. ispunct returns non-zero for any printable character for which neither isspace nor isalnum are . This generally equates to the set of punctuation and other special symbols. iscntrl tests for any control character, as defined by the character set. For ASCII, these are the characters with decimal values 0 through 31, inclusive. | |
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