#include <type_traits>
#include <typeinfo>
#include <cxxabi.h>
#include <memory>
#include <string>
#include <cstdlib>
#include <iostream>

template <class T>
std::string
type_name()
{
    typedef typename std::remove_reference<T>::type TR;
    std::unique_ptr<char, void(*)(void*)> own
           (
                abi::__cxa_demangle(typeid(TR).name(), nullptr,
                                           nullptr, nullptr),
                std::free
           );
    std::string r = own != nullptr ? own.get() : typeid(TR).name();
    if (std::is_const<TR>::value)
        r += " const";
    if (std::is_volatile<TR>::value)
        r += " volatile";
    if (std::is_lvalue_reference<T>::value)
        r += "&";
    else if (std::is_rvalue_reference<T>::value)
        r += "&&";
    return r;
}



int
main()
{
    char* pointer[] = {"hallo"};
    char **p = pointer; // SeppJ weiss alles
    std::cout << "decltype(pointer) is " << type_name<decltype(pointer)>() << '\n';
    std::cout << "decltype(p) is " << type_name<decltype(p)>() << '\n';
}