long ftell( File * f );
Description
- Return the current read/write position of the file. Bytes in a file are sequentially numbered starting
at zero. If the current position is zero, then the first byte of the file will be read or written.
If the position equals the file length, then no data can be read, but any write will append data to
the file.
- Note that no checking is done to see if the file descriptor s valid. If the File is not actually open,
the return value will be random.
Parameters
- f
- Pointer to file descriptor (initialized by
fopen_rd(), fopen_wr() or
fcreate()).
Return value
- Current read/write position (0 to length-of-file).
ERRNO values
- None
Library
- fs2.lib
See also
- fseek (FS2)
