c++11:copy_n

copy_n:

Copies exactly count values from the range beginning at first to the range beginning at result, if count>0.

从源处拷贝n个数到目标处

   #include <iostream>
   #include <vecotr>
   #include <list>
   #include <algorithm>

   using namespace std;

   int main()
   {
      int str[] = { , , , , };
      int dst[] {};

      copy_n(str, , dst);
      for (auto &v : str)
          cout << v << " ";
      cout << endl;

      vector<int> v_s { , ,  ,, };
      vector<int> v_d;
      list<int> l_d;

      copy_n(v_s.begin(), , v_d.begin());
      for (auto &v : v_d)
          cout << v << endl;

      copy_n(v_s.begin(), , l_d.begin());
      for (auto &v : l_d)
          cout << v << endl;
  }