C++编译.cpp文件，出现错误：

vector.h: In function ‘void sxl::test_vector3()’:
vector.h:242:57: error: no matching function for call to ‘find(sxl::vector<int>::iterator, sxl::vector<int>::iterator, int)’
     vector<int>::iterator pos = find(v.begin(),v.end(),3);
                                                         ^
vector.h:242:57: note: candidate is:
In file included from /usr/include/c++/4.8.2/bits/locale_facets.h:48:0,
                 from /usr/include/c++/4.8.2/bits/basic_ios.h:37,
                 from /usr/include/c++/4.8.2/ios:44,
                 from /usr/include/c++/4.8.2/ostream:38,
                 from /usr/include/c++/4.8.2/iostream:39,
                 from vector.h:1,
                 from vector.cpp:1:

解决方法：

添加一个头文件#include