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In most cases, the only portable operators on plain char types are assignment and equality operators (=, ==, != ). An exception is the translation to and from digits. For example, if the char c is a digit, c - '0' is a value between 0 and 9.
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Compiling at high warning levels in compliance with [MSC00-A. Compile cleanly at high warning levels] causes warnings to be issued when converting from {{unsigned char\[\]}} to {{const char *}} when {{char}} is signed and from {{signed char\[\]}} to {{const char *}} when {{char}} is defined to be unsigned. Casts are required to eliminate these warnings, but excessive casts can make code difficult to read and hide legitimate warning messages. |
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