EOF
===

Function
--------

**EOF** checks for end of file.

Syntax
------

EOF(file no)

Examples
--------

::

   10 OPEN "DATA.TXT" FOR INPUT AS #1
   20 INPUT#1,A,B,C
   30 PRINT A,B,C
   40 IF EOF(1) THEN CLOSE #1 ELSE GOTO 20
   50 PRINT "END OF FILE":END

Remarks
-------

| EOF = -1 if end of file has been reached
| EOF = 0 if more data is in the file

Programs should not try to read beyond the end of a file since an error
will occur.

The file DATA.TXT used in this example, could be created by a Basic
program of the form:

::

   100 OPEN "DATA.TXT"FOR OUTPUT AS #1
   110 WRITE#1, 123,235,345
   120 CLOSE#1
   130 END

This will ensure that the correct end of file marker is written to the
file.