MATLAB Function Reference    

Get file position indicator



position = ftell(fid) returns the location of the file position indicator for the file specified by fid, an integer file identifier obtained from fopen. The position is a nonnegative integer specified in bytes from the beginning of the file. A returned value of -1 for position indicates that the query was unsuccessful; use ferror to determine the nature of the error.

See Also

fclose, ferror, fopen, fprintf, fread, fscanf, fseek, fwrite

  fseek full