test.cpp

template <class First, class Second, class ...Args>
int maxSize();

template <class First>
int maxSize();

template <class First, class Second, class ...Args>
int maxSize()
{
    return maxSize<Second, Args...>() > sizeof(First) ? maxSize<Second, Args...>() : sizeof(First);
}

template <class First>
int maxSize() {
    return sizeof(First);
}


int main() {
    maxSize<int, int>();
}