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Annotation of researchv10dc/dist/man/v4/man3/putchr.3, revision 1.1.1.1

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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