towlower() function in C/C++
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 towlower() function.
Syntax:
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. Program 1:
CPP
// Program to illustrate // towlower() function #include <cwchar> #include <cwctype> #include <iostream> using namespace std; int main() { wchar_t str[] = L"w3wiki"; wcout << L"The lowercase version of \"" << str << L"\" is "; for ( int i = 0; i < wcslen(str); i++) // Function to convert the character // into the lowercase version, if exists putwchar(towlower(str[i])); return 0; } |
Output:
The lowercase version of "w3wiki" is w3wiki
Program 2:
CPP
// Program to illustrate // towlower() function #include <cwchar> #include <cwctype> #include <iostream> using namespace std; int main() { wchar_t str[] = L"hello Ishwar 123!@#"; wcout << L"The lowercase version of \"" << str << L"\" is "; for ( int i = 0; i < wcslen(str); i++) // Function to convert the character // into the lowercase version, if exists putwchar(towlower(str[i])); return 0; } |
Output:
The lowercase version of "hello Ishwar 123!@#" is hello ishwar 123!@#
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