get object idetifier

[ReaperSoul]

i want to get the identifier of a object

class placeholder {
string identifier = identifier
public:
void print(){
cout << identifier << endl;
}
}
int main() {
placeholder name;
name.print();
}

output:
name

so if that's the code it should give me the identifier and output the identifier
im looking for any help anyone can give

[JLBorges]

#include <iostream>
#include <string>

struct some_class
{
    std::string identifier ;

    some_class( std::string id = "no_name" ) : identifier(id) {}

    std::string unique_id() const
    { return identifier + '@' + std::to_string( std::uintptr_t(this) ) ;}
};

#define OBJECT_OF_SOME_CLASS(identifier) some_class identifier{#identifier}

int main()
{
    OBJECT_OF_SOME_CLASS( object_orange ) ;

    struct A
    {
        OBJECT_OF_SOME_CLASS( object_orange ) ; // same id, different scope
    };

    static A a ;

    // both objects have the same identifier
    std::cout << object_orange.identifier << '\n' // object_orange
              << a.object_orange.identifier << '\n' ; // object_orange

    // but they have different unique_ids
    std::cout << object_orange.unique_id() << '\n' // object_orange@xxxxxxx
              << a.object_orange.unique_id() << '\n' ; // object_orange@yyyyyyy

}

http://coliru.stacked-crooked.com/a/2f4dd38bd0b7c231
http://rextester.com/LFT59113