#include <iostream>
#include <typeinfo>
using namespace std;
 
#include <cstdlib>
#include <memory>
#include <cxxabi.h>
 
std::string demangle(const char* name) {
 
    int status = -4; // some arbitrary value to eliminate the compiler warning
 
    // enable c++11 by passing the flag -std=c++11 to g++
    std::unique_ptr<char, void(*)(void*)> res {
        abi::__cxa_demangle(name, NULL, NULL, &status),
        std::free
    };
 
    return (status==0) ? res.get() : name ;
}
 
int main() {
	cout << demangle(typeid(decltype("Hello, world!")).name()) << endl;
	return 0;
}

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