PUTCHAR(III) 5/10/73 PUTCHAR(III)





PUTCHAR(III)                 5/10/73                 PUTCHAR(III)







NAME

     putchar - write character



SYNOPSIS

     putchar(ch)



     flush( )



DESCRIPTION

     Putchar writes out its argument and  returns  it  unchanged.

     The  low-order  byte  of the argument is always written; the

     high-order byte is written only if it is  non-null.   Unless

     other   arrangements  have  been  made,  putchar  writes  in

     unbuffered fashion on the standard output file.



     Associated with this routine is an  external  variable  fout

     which  has  the  structure  of a buffer discussed under putc

     (III).  If the file descriptor part of this structure (first

     word)  is not 1, output via putchar is buffered.  To achieve

     buffered output one may say, for example,



             fout = dup(1);          or

             fout = fcreat(...);



     In such a case flush  must  be  called  before  the  program

     terminates in order to flush out the buffered output.  Flush

     may be called at any time.



SEE ALSO

     putc(III)



BUGS

     The fout notion is kludgy.
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