syntax - C++: Unknown pointer size when forward declaring (error C2036) -

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In the header file, I have further declared two members of a namespace: 

  Namespot Fu {struct odd typifif std :: vector & lt; Odp & gt; ODPVEC; }; Square bar {public: FU :: ODPWEC falcon; // C2036};

Error generated by compiler: 

  Error C2036: 'Foo :: Odp *': Unknown size

I feel that this is an issue whose announcement is forwarded to ODP . How do I get it?

Announce ODP The compiler does not know what type of Std :: vector & lt; Odp & gt; , because ODP has not been announced yet, give the compiler a complete announcement for that class.


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