PUTCHAR(III) 5/10/73 PUTCHAR(III) NAME putchar, flush - write character SYNOPSIS putchar(ch) flush( ) DESCRIPTION Putchar writes out its argument and returns it unchanged. Only the low-order byte is written, and 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 greater than 2, output via putchar is buffered. To achieve buffered output one may say, for example, fout = dup(1); or fout = creat(...); 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.