The towlower() is a built-in function in C/C++ which converts the given wide character into lowercase. It is defined within the cwctype header file of C++.
- It is a function in header file
, so it is mandatory to use this header file if using this function
- It is the wide-character equivalent of the tolower() function.
wint_t towlower( wint_t ch )
Parameter: The function accepts a single mandatory parameter ch which specifies the wide character which we have to convert into lowercase.
Return Value: The function returns the lowercase equivalent to c, if such value exists, or c (unchanged) otherwise. The value is returned as a wint_t value that can be implicitly casted to wchar_t.
Below programs illustrates the above function.
The lowercase version of "GeeksforGeeks" is geeksforgeeks
The lowercase version of "hello Ishwar 123!@#" is hello ishwar 123!@#
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