.TH FERROR 3S .SH NAME feof, ferror, clearerr, fileno \- stream status inquiries .SH SYNOPSIS .B #include .PP .B feof(stream) .br .SM .B FILE .B *stream; .PP .B ferror(stream) .br .SM .B FILE .B *stream .PP .B clearerr(stream) .br .SM .B FILE .B *stream .PP .B fileno(stream) .br .SM .B FILE .B *stream; .SH DESCRIPTION .I Feof returns non-zero when end of file is read on the named input .I stream, otherwise zero. .PP .I Ferror returns non-zero when an error has occurred reading or writing the named .I stream, otherwise zero. Unless cleared by .I clearerr, the error indication lasts until the stream is closed. .PP .I Clrerr resets the error indication on the named .I stream. .PP .I Fileno returns the integer file descriptor associated with the .I stream, see .IR open (2). .PP These functions are implemented as macros; they cannot be redeclared. .SH "SEE ALSO" fopen(3), open(2)