towupper() function in C/C++
The towupper() is a built-in function in C/C++ which converts the given wide character into uppercase. It is defined within the cwctype header file of C++. Syntax:
wint_t towupper( wint_t ch )
Parameter: The function accepts a single mandatory parameter ch which specifies the wide character which we have to convert into uppercase. Return Value: The function returns two values as shown below.
- If the ch has an uppercase version, then it is converted into it.
- If it is not then no modification happens.
Below programs illustrates the above function. Program 1:
CPP
// Program to illustrate // towupper() function #include <cwchar> #include <cwctype> #include <iostream> using namespace std; int main() { wchar_t str[] = L"w3wiki"; wcout << L"The uppercase version of \"" << str << L"\" is "; for ( int i = 0; i < wcslen(str); i++) // Function to convert the character // into the uppercase version, if exists putwchar(towupper(str[i])); return 0; } |
Output:
The uppercase version of "w3wiki" is w3wiki
Program 2:
CPP
// Program to illustrate // towupper() function #include <cwchar> #include <cwctype> #include <iostream> using namespace std; int main() { wchar_t str[] = L"hello Ishwar 123!@#"; wcout << L"The uppercase version of \"" << str << L"\" is "; for ( int i = 0; i < wcslen(str); i++) // Function to convert the character // into the uppercase version, if exists putwchar(towupper(str[i])); return 0; } |
Output:
The uppercase version of "hello Ishwar 123!@#" is HELLO ISHWAR 123!@#