• p = ftell(fid). Input argument. ... ftell returns the offset of the current byte relative to the beginning of the file associated with the named stream fid.
  • The ftell() function returns the current file position of the specified stream. We can use the ftell() function to get the total size of a file after moving the file pointer at...
  • #include <stdio.h> long int ftell( FILE *fp ); Description: The ftell() function returns the current read/write position of the file specified by fp.
  • // crt_ftell.c // This program opens a file named CRT_FTELL.C // for reading and tries to read 100 characters. ... Get position after read: position = ftell( stream )
  • Use ftell with fseek to return to file locations correctly. Success. -1L and the function sets errno to one of these values
  • long int pos = ftell(file); /* position indicator at start of file */ check(pos != ... C89/C90 standard (ISO/IEC 9899:1990): 4.9.9.4 The ftell function.
  • The prototype functions ftell: long int ftell( FILE * FILESTREAM ); Title Language header file stdio.h cstdio With C ++ Description ftell function returns a pointer to...
  • Whether you are working with text files or binary files, ftell() provides the key to unlock the secrets of file handling. But how does it work?
  • The ftell function obtains the current value of the file position indicator for the stream pointed to by f.
  • The ftell function returns the current file position indicator for stream. If an error occurs, the ftell function will return -1L and update errno.