#include <iostream>#include <cstdlib>#include <memory>using namespace std;class Kiwi {private:    int weight;public:    Kiwi(int w) : weight(w) {}    ~Kiwi() {        cout<<"~Kiwi"<<endl;    }    int getWeight() {return weight;}};void deleter(Kiwi* x) {    cout<<"deleting"<<endl;    // if remove below line object will not be delete by smart pointer    delete x;}void driven() {    shared_ptr<Kiwi> p(new Kiwi(100), deleter);    cout<<p->getWeight()<<endl;    cout<<p.use_count()<<endl;    shared_ptr<Kiwi> q = p;    cout<<p->getWeight()<<endl;    cout<<q->getWeight()<<endl;    cout<<p.use_count()<<endl;    cout<<q.use_count()<<endl;}int main() {    cout<<"test start"<<endl;    driven();    cout<<"test end"<<endl;    return 0;}