@node putchar
@section @code{putchar}
@findex putchar

POSIX specification: @url{http://www.opengroup.org/susv3xsh/putchar.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
On Windows platforms (excluding Cygwin), this function does not set @code{errno}
upon failure.
@end itemize