* Tom Hughes:

> On 26/02/2019 19:42, Sérgio Basto wrote:
>> Is stdio.h that defines EOF as -1 , so if we what work with files and
>> use EOF character,  we need use signed chars, though .
> No, you need to use int. The EOF value is deliberately outside the
> range of character values so that EOF is not a valid character!

EOF is a valid character, 'ÿ', in the Latin-1 encoding on x86 and
various other architectures.  On those architectures, EOF and 'ÿ' have
the same type and value as far as the C language is concerned.  (In C++,
character literals have type char, so the types are different.)

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