template <class Container> class back_insert_iterator;//模板类

template <class Container>

  back_insert_iterator<Container> back_inserter (Container& x);//模板函数，返回值为back_insert_iterator模板类对象

#include <iostream>

#include <vector>

#include <list>

#include <iterator>  

using namespace std;

template<typename T>  

void PrintElements(T c)

{

    T::const_iterator itr = c.begin();

    while(itr != c.end())

        cout << *itr++ <<" ";

}  

int main()

{

    vector<int> vecSrc;

    list<int> vecDest;  

    for(vector<int>::size_type i = 0; i < 3; ++i)

        vecSrc.push_back(i);  

    // 1. 类back_insert_iterator与函数back_inserter

    // explicit back_insert_iterator(Container& _Cont);

    // template<class Container> back_insert_iterator<Container> back_inserter(Container& _Cont);

    copy(vecSrc.begin(), vecSrc.end(), back_insert_iterator<list<int> >(vecDest));

    // copy(vecSrc.begin(), vecSrc.end(), back_inserter(vecDest));  // 效果一样

    PrintElements(vecDest);

    cout << endl;  

    // 2. 类front_insert_iterator与函数front_inserter

    // explicit front_insert_iterator(Container& _Cont);

    // template<class Container> front_insert_iterator<Container> front_inserter(Container& _Cont);

    copy(vecSrc.begin(), vecSrc.end(), front_insert_iterator<list<int> >(vecDest));

    // copy(vecSrc.begin(), vecSrc.end(), front_inserter(vecDest));

    PrintElements(vecDest);

    cout << endl;  

    // 3. 类insert_iterator与函数inserter

    // insert_iterator(Container& _Cont, typename Container::iterator _It);

    // template<class Container> insert_iterator<Container> inserter(Container& _Cont, typename Container::iterator _Where);

    copy(vecSrc.begin(), vecSrc.end(), insert_iterator<list<int> >(vecDest, ++vecDest.begin()));

    // copy(vecSrc.begin(), vecSrc.end(), inserter(vecDest, ++vecDest.begin()));

    PrintElements(vecDest);  

    return 0;

}