Effective C++ .15,16获取原始资源和成对使用同类型new和delete

15. 智能指针可以通过get操作

#include <iostream>

#include <cstdlib>

#include <memory>



using namespace std;



class Orange {

private:

    int weight;

public:

    Orange(int w) : weight(w) {}

    int getWeight() {return weight;}

};



int main() {

    shared_ptr<Orange> p(new Orange(123));

    Orange* ptr = p.get();

    ptr++;

    ptr--;

    cout<<ptr->getWeight()<<endl;

    return 0;

}

 

16. new[] 对应用delete[]