#include
　using namespace std;
　main()　
　{　　
　int　 i = 7;　　
　int*　ip = &i;　　
　int** ipp = &ip;　　
　cout << "Address " << ip << " contains " << *ip << endl;　　
　cout << "Address " << ipp << " contains " << *ipp << endl;　　
　cout << "**ipp == " << **ipp << endl;
　指向指针的指针