std::rename
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   Defined in header  
<cstdio>
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|   int rename( const char *old_filename, const char *new_filename ); 
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Changes the filename of a file. The file is identified by character string pointed to by old_filename. The new filename is identified by character string pointed to by new_filename.
Contents | 
[edit] Parameters
| old_filename | - | pointer to a null-terminated string containing the path identifying the file to rename | 
| new_filename | - | pointer to a null-terminated string containing the new path of the file | 
[edit] Return value
0 upon success or non-zero value on error.
[edit] Example
| This section is incomplete Reason: no example  | 
[edit] See also
|    erases a file  (function)  | 
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