iterator-迭代器

迭代器种类：

迭代器中copy() and insert iterators

//inserts.cpp   copy() and insert iterators
#include<iostream>
#include<string>
#include<iterator>
#include<vector>
#include<algorithm>
using namespace std;

void output(const string &s)
{
    cout<<s<<" ";
    }

int main()
{
    string s1[4] = {"fine","fish","fashion","fate"};
    string s2[2] = {"busy","bats"};
    string s3[2] = {"silly","singers"};
    
    vector<string> words(4);
    copy(s1,s1+4,words.begin());
    for_each(words.begin(),words.end(),output);
    cout<<endl;
    
    copy(s2,s2+2,back_insert_iterator<vector<string>>(words));
    for_each(words.begin(),words.end(),output);
    cout<<endl;
    
    copy(s3,s3+2,insert_iterator<vector<string>>(words,words.begin()));
    for_each(words.begin(),words.end(),output);
    cout<<endl;
    
    return 0;
}

结果

fine fish fashion fate 
fine fish fashion fate busy bats 
silly singers fine fish fashion fate busy bats