The following documentation discusses functions to manage files or other input/output streams. Among these functions are subroutines to generate or scan strings according to specifications from a format string.
The underlying facilities for input and output depend on the host system, although these functions provide a uniform interface.
The corresponding declarations are in stdio.h.
The reentrant versions of these functions use the following macros.
_stdin_r(reent)
_stdout_r(reent)
_stderr_r(reent)
These reentrant versions are used instead of the globals, stdin, stdout, and stderr.
The argument, <[reent]>, is a pointer to a reentrancy structure.
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