Pass unsigned chars to the functions in <cctype>
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Differently from their <locale> counterparts, the functions in <cctype> and <ctype.h> have undefined behavior if their argument is not representable as an unsigned char and is not equal to EOF.
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gennaroprota
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unsigned chars to the functions in <cctype>
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Differently from their
<locale>counterparts, the functions in<cctype>and<ctype.h>have undefined behavior if their argument is not representable as anunsigned charand is not equal toEOF.