C++析构出现问题，求解决

rainymay

#include <cstdlib>
#include <iostream>
using namespace std;
const int DEFAULT_SIZE = 10;
enum ErrorType
{
invlidArraySize,memoryAllocationError,indexOutOfRange
};
template <class T>
class Array
{
public:
Array(int size = 10)
{
alist = new T[size];
if(NULL ==alist)
{
cout<<"menoryAllocationError!"<<endl;
exit(-1);
}
cout<<alist<<endl;
length = size;
}
Array<T>(Array<T> &a);
~Array()
{
cout<<"~Array()"<<endl;
cout<<alist<<endl;
delete []alist;
}
int getLength()
{
return length;
}
void set(int index,T value)
{
alist[index] = value;
}
T& get(int index)
{
return alist[index];
}
T &operator[](int index);
private:
int length;
T *alist;
};
template <class T>
Array<T>:: Array(Array<T> &a)
{
this->alist = new T(a.getLength());
if(NULL ==alist)
{
cout<<"menoryAllocationError!"<<endl;
exit(-1);
}
for(int i = 0; i < length; i++)
{
alist = a.alist;
}
this->length = a.getLength();
}
template <class T>
T& Array<T>:: operator[](int index)
{
if(index < 0 || index >= length)
{
cout<<"indexOutOfRange!"<<endl;
exit(-1);
}
return alist[index];
}


int main()
{
Array <int> a(10);
for(int i = 0; i < 10; i++)
{
cout<<&a<<endl;
a.set(i,i);
}
for(int i = 0; i < 10; i++)
{
cout<<&a<<endl;
cout<<a.get(i)<<endl;
}
system("pause");
return 0;
}

修改了下。vs2008无错。。
主要还是构造函数：
alist = new T(size);
当你Array<int> a(10)，类构造：int * alist = new int(10)
这样你set时不是访问了不该访问的内存么。
你既然指向数组。应该
alist = new T[size];，类构造：int * alist = new int[10]