第六周阅读程序—a

#include <iostream>using namespace std;class base{private:  int m;public:  base(){};  base(int a)  {m=a; }  int get(){return m;}  void set(int a){m=a;}};//base_endint main(){ base *ptr;  ptr=new base[2];    ptr->set(30);  ptr=ptr+1;  ptr->set(50);  base a[2]={1,9};  cout<<a[0].get()<<","<<a[1].get()<<endl;  cout<<ptr->get()<<",";  ptr=ptr-1;  cout<<ptr->get()<<endl;  delete[] ptr;  return 0;}