FERROR(3S)                                                          FERROR(3S)



NAME
       ferror, feof, clearerr, fileno - stream status inquiries

SYNOPSIS
       #include <stdio.h>

       feof(stream)
       FILE *stream;

       ferror(stream)
       FILE *stream

       clearerr(stream)
       FILE *stream

       fileno(stream)
       FILE *stream;

DESCRIPTION
       _F_e_o_f  returns  non-zero  when  end  of  file is read on the named input
       _s_t_r_e_a_m, otherwise zero.  Unless cleared by  _c_l_e_a_r_e_r_r,  the  end-of-file
       indication lasts until the stream is closed.

       _F_e_r_r_o_r  returns  non-zero when an error has occurred reading or writing
       the named _s_t_r_e_a_m, otherwise zero.   Unless  cleared  by  _c_l_e_a_r_e_r_r,  the
       error indication lasts until the stream is closed.

       _C_l_e_a_r_e_r_r  resets  the  error  and  end-of-file  indicators on the named
       _s_t_r_e_a_m.

       _F_i_l_e_n_o returns the integer file descriptor associated with the  _s_t_r_e_a_m,
       see _o_p_e_n(2).

       Currently all of these functions are implemented as macros; they cannot
       be redeclared.

SEE ALSO
       fopen(3S), open(2)



4th Berkeley Distribution        May 14, 1986                       FERROR(3S)