#include <iostream>

 #include <memory>

 #include <string>

 #include <vector>

 using namespace std;

 void test()

 {

         shared_ptr<int> P(new int[]{ ,,,,,,,,, });

         shared_ptr<int> P1 = P;

         cout << *P1 << endl;

         cout << *P << endl;

         //地址一样

         cout << &(*P1) << endl;

         cout << &(*P) << endl;

         //内存共享,赋值重载或者拷贝构造会使计数+1

         cout << P.use_count() << endl;

         //释放内存

         P.reset();

 }

 void main()

 {

     test();

     cin.get();

 }