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template <typename T>
struct Comparator : public std::binary_function<T,T,bool>
{
    bool operator()(const T &first, const T &second)
    {
        return first < second;
    }
};
template <typename T>
bool compare(T &, T &) = &Comparator::operator();
 
// 10: error: C2955: 'Comparator': use of class template requires template argument list
// 10: error: C2059: syntax error: '&'

prog.cpp:2:48: error: expected template-name before '<' token
 struct Comparator : public std::binary_function<T,T,bool>
                                                ^
prog.cpp:2:48: error: expected '{' before '<' token
prog.cpp:2:48: error: expected unqualified-id before '<' token
prog.cpp:10:27: error: invalid pure specifier (only '= 0' is allowed) before 'Comparator'
 bool compare(T &, T &) = &Comparator::operator();
                           ^

Standard output is empty