#include <stdio.h>
#include <wchar.h>
#include <string.h>

int main() {
    // UTF-8 string
    const char* utf8Hostname = "ドメイン名.com";

    // Buffer for UTF-16 string
    wchar_t utf16Hostname[256];

    // Convert UTF-8 to UTF-16
    if (mbstowcs(utf16Hostname, utf8Hostname, sizeof(utf16Hostname) / sizeof(utf16Hostname[0])) != (size_t)-1) {
        // Display UTF-16 string
        wprintf(L"UTF-16 string: %s\n", utf16Hostname);

        // Now let's decode UTF-16 back to UTF-8
        char decodedUtf8[256];
        size_t len;
        if (wcstombs_s(&len, decodedUtf8, sizeof(decodedUtf8), utf16Hostname, _TRUNCATE) == 0) {
            // Display the decoded UTF-8 string
            printf("Decoded UTF-8 string: %s\n", decodedUtf8);
        }
        else {
            // Handle decoding error
            perror("Error converting UTF-16 to UTF-8");
        }
    }
    else {
        // Handle encoding error
        perror("Error converting UTF-8 to UTF-16");
    }

    return 0;
}