#include <lib.h> #include <unistd.h> #include <stdio.h> int fflush(iop) FILE *iop; { int count; if (testflag(iop, UNBUFF) || !testflag(iop, WRITEMODE)) return(0); if (iop->_count <= 0) return(0); count = write(iop->_fd, iop->_buf, iop->_count); if (count == iop->_count) { iop->_count = 0; iop->_ptr = iop->_buf; return(count); } iop->_flags |= _ERR; return(EOF); }