函数原型：

template <class InputIteraton, class OutputIterator>

OutputIterator copy( InputIterator first, InputIterator last, OutputIterator result);

解释：

copy区间[first,last)到result后。返回目标区间的最后一个元素的迭代器。

代码可能类似于：

template<class InputIterator, class OutputIterator>

OutputIterator copy( InputIterator first, InputIterator last, OutputIterator result)

{

while (first!=last) *result++ = *first++;

return result;

}

程序示例：

//copy algorithm example

#include <iostream>

#include <algorithm>

#include <vector>

using namespace std;

int main()

{

int myints[]={10,20,30,40,50,60,70};

vector<int> myvector;

vector<int>::iterator it;

myvector.resize(7); //allocate space for 7 elements

copy(myints,myints+7,myvector.begin());

cout << "myvector contains:";

for ( it=myvector.begin(); it!=myvector.end(); ++it)

cout << " " << *it;

cout << endl;

return 0;

}
 
  
Output: 
 
  
 
    
    
 
      
myvector contains: 10 20 30 40 50 60 70