towlower
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | Defined in header  <wctype.h> | ||
| wint_t towlower( wint_t ch ); | ||
Converts the given wide character to lowercase, if possible.
| Contents | 
[edit] Parameters
| ch | - | wide character to be converted | 
[edit] Return value
Lowercase version of ch or unmodified ch if no lowercase version is listed in the current C locale.
[edit] Notes
Only 1:1 character mapping can be performed by this function, e.g. the Greek uppercase letter 'Σ' has two lowercase forms, depending on the position in a word: 'σ' and 'ς'. A call to towlower cannot be used to obtain the correct lowercase form in this case.
[edit] See also
| converts a wide character to uppercase (function) | |
| converts a character to lowercase (function) | |
| C++ documentation for towlower | |


