stl copy

int nums[] = {100, 200, 300, 400, 500, 600};
    vector<int> vec;
    vector<int>::iterator it;
    //方法一
    //    vec.resize(6);   // 为容器myvector分配空间
    //    copy (nums, nums+7, vec.begin());
    //方法二
    copy (nums, nums+6, std::back_inserter(vec));
    cout << "vec contains: ";
    for ( it = vec.begin();  it != vec.end();  ++it )
    {
    cout << " " << *it;
    }
    cout << endl;

这个也是很好的方案 std::back_inserter