ftell()

This is a File I/O function. It is not implemented in the Compiler.

  #include <stdio.h>

  

  long ftell(FILE *f);

  

ftell() returns the current file position. For binary files, this is the byte offset from the beginning of the file; for text files, do not use this value except as an argument to fseek().

-1, if an error occurred; otherwise the current file position.

fgetpos() and

fsetpos()