Vector成员为指针时要注意的问题

 1 #include <iostream>
 2 #include <memory>
 3 #include <vector>
 4 using namespace std;
 5 
 6 class A {
 7 public:
 8     ~A(){
 9         cout<<"delete"<<endl;
10     }
11 };
12 
13 void main()
14 {
15     vector<auto_ptr<A> > tmp;
16     tmp.push_back(auto_ptr<A>(new A()));
17     tmp.push_back(auto_ptr<A>(new A()));
18 }

 1 #include <iostream>
 2 #include <memory>
 3 #include <vector>
 4 using namespace std;
 5 
 6 class A {
 7 public:
 8     ~A(){
 9         cout<<"delete"<<endl;
10     }
11 };
12 
13 void main()
14 {
15     vector<A*> tmp;
16     tmp.push_back(new A());
17     delete tmp[0];
18 }