fsetpos
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | Defined in header <stdio.h>
  | ||
| int fsetpos( FILE *stream, const fpos_t *pos ); | ||
Sets the file position indicator for the file stream stream to the value pointed to by pos.
[edit] Parameters
| stream | - | file stream to modify | 
| pos | - | pointer to a fpos_t object to use as new value of file position indicator | 
[edit] Return value
0 upon success, nonzero value otherwise.
[edit] See also
| gets the file position indicator (function) | |
| returns the current file position indicator (function) | |
| moves the file position indicator to a specific location in a file (function) | |