Part Four: ctype.h Character Handling
By James M. Rogers
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The last article was on stdio.h Input and Output. This article is on ctype.h character handling.
Character handling allows us to clasify characters as alpha, digit, hexdigit, whitespace, printable, lowercase, uppercase, punctuation and to map to and from the upper and lowercase alphabets. Most importantly ctype.h implements these functions in a non-system depend...[ 查看全文 ]