#include<iostream>using namespace std; class A {private: int *a; int n; int MaxLen; public:A(int *, int , int );A(): a(0), n(0), MaxLen(0) {}~A();int GetValue(int i) {return a[i];} };A::A(int *aa, int nn, int MM){n=nn;MaxLen=MM;if(n>MaxLen) exit(1);a=new int[MaxLen];for(int i=0; i<10; i++){*(a+i)=*(aa+i);} //以i为循环变量把aa数组中每个元素值传送给a数组的对应元素中}A::~A(){delete[] a;} //析构函数的类外定义，释放指针型数据a所指向的空间void main(){int b[10]={1,2,3,4,5,6,7,8,9,10};A r(b,10,10);int i,s=0;//int *p = &r.a;for(i=0; i < 10; i++){s = s+ r.GetValue(i);} //以i为循环变量，把r对象的a数据成员中的每个元素值依次累加到s中cout<<"s="<<s<<endl;}
有点难~~~~但是之后很爽！！！！！！！！！
