std::wcsrchr
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   Defined in header  <cwchar>
  | 
||
|   const wchar_t* wcsrchr( const wchar_t* str, wchar_t ch );  | 
||
|         wchar_t* wcsrchr(       wchar_t* str, wchar_t ch );  | 
||
Finds the last occurrence of the wide character ch in the wide string pointed to by str. 
Parameters
| str | - | pointer to the null-terminated wide string to be analyzed | 
| ch | - | wide character to search for | 
Return value
Pointer to the found character in str, or NULL if no such character is found.
Example
| This section is incomplete Reason: no example  | 
See also
|    finds the first occurrence of a wide character in a wide string  (function)  | |
|    finds the last occurrence of a character  (function)  | |
|    find the last occurrence of a substring  (public member function of std::basic_string<CharT,Traits,Allocator>)  |