don't forget to clear _cnt.

[unix-history] / usr / src / lib / libc / stdio / fprintf.c

/* @(#)fprintf.c        4.3 (Berkeley) %G% */
#include        <stdio.h>

fprintf(iop, fmt, args)
FILE *iop;
char *fmt;
{
       char localbuf[BUFSIZ];

       if (iop->_flag & _IONBF) {
               iop->_flag &= ~_IONBF;
               iop->_ptr = iop->_base = localbuf;
               iop->_bufsiz = BUFSIZ;
               _doprnt(fmt, &args, iop);
               fflush(iop);
               iop->_flag |= _IONBF;
               iop->_base = NULL;
               iop->_bufsiz = NULL;
               iop->_cnt = 0;
       } else
               _doprnt(fmt, &args, iop);
       return(ferror(iop)? EOF: 0);
}