#include <windows.h>
#include <wchar.h>

int wmain(void) {

    wchar_t computerName[MAX_COMPUTERNAME_LENGTH + 1];
    DWORD size = sizeof(computerName) / sizeof(computerName[0]);

    int r = GetComputerNameW(computerName, &size);

    if (r == 0) {
        wprintf(L"Failed to get computer name %ld", GetLastError());
        return 1;
    }

    wprintf(L"Computer name: %ls\n", computerName);

    return 0;
}