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View Compilation Error

0_0_19944607_27990.cpp:18:1: error: reference to 'vector' is ambiguous
 vector operator -(point a,point b)
 ^
0_0_19944607_27990.cpp:17:15: note: candidates are: typedef struct point vector
 typedef point vector;
               ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:64:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/random.h:34,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:49,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_19944607_27990.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_vector.h:214:11: note:                 template<class _Tp, class _Alloc> class std::vector
     class vector : protected _Vector_base<_Tp, _Alloc>
           ^
0_0_19944607_27990.cpp:18:1: error: 'vector' does not name a type
 vector operator -(point a,point b)
 ^
0_0_19944607_27990.cpp:22:1: error: reference to 'vector' is ambiguous
 vector rotation(vector A,double rad)//鍚戦噺A鏃嬭浆rad涓姬搴
 ^
0_0_19944607_27990.cpp:17:15: note: candidates are: typedef struct point vector
 typedef point vector;
               ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:64:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/random.h:34,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:49,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_19944607_27990.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_vector.h:214:11: note:                 template<class _Tp, class _Alloc> class std::vector
     class vector : protected _Vector_base<_Tp, _Alloc>
           ^
0_0_19944607_27990.cpp:22:1: error: 'vector' does not name a type
 vector rotation(vector A,double rad)//鍚戦噺A鏃嬭浆rad涓姬搴
 ^
0_0_19944607_27990.cpp: In function 'int main()':
0_0_19944607_27990.cpp:42:17: error: reference to 'vector' is ambiguous
                 vector A = b-a;
                 ^
0_0_19944607_27990.cpp:17:15: note: candidates are: typedef struct point vector
 typedef point vector;
               ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:64:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/random.h:34,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:49,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_19944607_27990.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_vector.h:214:11: note:                 template<class _Tp, class _Alloc> class std::vector
     class vector : protected _Vector_base<_Tp, _Alloc>
           ^
0_0_19944607_27990.cpp:43:17: error: reference to 'vector' is ambiguous
                 vector B = rotation(A,rad);
                 ^
0_0_19944607_27990.cpp:17:15: note: candidates are: typedef struct point vector
 typedef point vector;
               ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/vector:64:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/random.h:34,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/random:49,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_algo.h:66,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:62,
                 from 0_0_19944607_27990.cpp:2:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_vector.h:214:11: note:                 template<class _Tp, class _Alloc> class std::vector
     class vector : protected _Vector_base<_Tp, _Alloc>
           ^
0_0_19944607_27990.cpp:44:23: error: 'B' was not declared in this scope
                 a = b-B;
                       ^


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