1 #include <bits/stdc++.h> 2 using namespace std; 3 typedef int* intpt; 4 int N=1; 5 class mybox{ 6 public: 7 int name; 8 friend class boxfri; 9 friend void WatchIt(mybox box); 10 mybox(int len); 11 mybox(const mybox &abox); 12 ~mybox(); 13 protected: 14 intpt l,w,h; 15 private: 16 int MyTh; 17 18 }; 19 class boxfri{ 20 21 }; 22 /*class boxpub: public mybox{ 23 24 }; 25 class boxpri: private mybox{ 26 27 }; 28 class boxpro: protected mybox{ 29 30 };*/ 31 mybox:: mybox(int len){ 32 name=N;++N; 33 MyTh=12345; 34 l=new int; w=new int; h=new int; 35 *l=len; *w=len; *h=len; 36 cout<<"We have created a box:"<<"box"<<name<<endl; 37 38 } 39 mybox:: mybox(const mybox &abox){ 40 l=new int; w=new int; h=new int; 41 *l=*abox.l;*w=*abox.w;*h=*abox.h; 42 name=abox.name;MyTh=abox.MyTh; 43 cout<<"Use the copy code"<<endl; 44 45 } 46 mybox:: ~mybox(){ 47 delete l; delete w; delete h; 48 cout<<"We have destroyed a box:"<<"box"<<name<<endl; 49 } 50 void WatchIt(mybox box){ 51 cout<<"box"<<box.name<<endl; 52 cout<<*box.l<<' '<<*box.w<<' '<<*box.h<<endl; 53 cout<<box.MyTh<<endl; 54 } 55 int main(){ 56 int a;scanf("%d",&a); 57 mybox box1(a); 58 WatchIt(box1); 59 cout<<N<<endl; 60 return 0; 61 }
结果如下：
