Annotation of researchv10dc/dist/man/v4/man3/putchr.3, revision 1.1

1.1     ! root        1: .th PUTCHAR III 5/10/73
        !             2: .sh NAME
        !             3: putchar \*- write character
        !             4: .sh SYNOPSIS
        !             5: .ft B
        !             6: putchar(ch)
        !             7: .s3
        !             8: flush( )
        !             9: .ft R
        !            10: .sh DESCRIPTION
        !            11: .it Putchar
        !            12: writes out its argument and returns it unchanged.
        !            13: The low-order byte of the
        !            14: argument is always written;
        !            15: the high-order byte is written only if it is
        !            16: non-null.
        !            17: Unless other arrangements have been made,
        !            18: .it putchar
        !            19: writes in
        !            20: unbuffered fashion on the standard output file.
        !            21: .s3
        !            22: Associated with this routine is an external variable
        !            23: .it fout
        !            24: which has the
        !            25: structure of a buffer discussed under putc (III).
        !            26: If the file descriptor part of this structure (first word)
        !            27: is not 1, output via
        !            28: .it putchar
        !            29: is buffered.
        !            30: To achieve buffered output one may say, for example,
        !            31: .s3
        !            32: .nf
        !            33:        fout = dup(1);          or
        !            34:        fout = fcreat(...);
        !            35: .s3
        !            36: .fi
        !            37: In such a case
        !            38: .it flush
        !            39: must be called
        !            40: before the program terminates in order to flush out
        !            41: the buffered output.
        !            42: .it Flush
        !            43: may be called at any time.
        !            44: .sh "SEE ALSO"
        !            45: putc(III)
        !            46: .sh BUGS
        !            47: The
        !            48: .it fout
        !            49: notion is kludgy.

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