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Functions HI-TECH C FILENO
From HI-TECH C for CP/M Fan WIKI(EN)
FILENO
SYNOPSIS
fileno(FILE * stream)
DESCRIPTION
Fileno() is a macro from stdio.h which yields the file descriptor associated with stream. It is mainly used when it is desired to perform some low-level operation on a file opened as a stdio stream.
SEE ALSO
fopen, fclose, open, close