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"GeeksforGeeks";
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 "GeeksforGeeks" is GEEKSFORGEEKS
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!@#