输入输出迭代器

#include<vector>
#include<iostream>
#include<iterator>
using namespace std;

void pri(vector<int>a)  //用输出迭代器将容器中元素输出到标准输出流 
{
    ostream_iterator<int> int_put(cout," ");
    for(auto it : a)              //范围for语句 
    {
       *int_put++ = it;
    }
    cout << endl;
}

int main(void)       //用输入迭代器把输入值添加到容器 
{
    vector<int> x;
    istream_iterator<int> int_it(cin);
    istream_iterator<int> int_eof;
    while(int_it != int_eof)
    {
        x.push_back(*int_it++);
    }
    pri(x);
    return 0;
}