Compiler output below
2> Gamescore. Obj: error LNK2019: unresolved external symbol "public: __thiscall BmobObject: : BmobObject (class STD: : basic_string & lt; Char, struct STD: : char_traits & lt; Char> Class, STD: : allocator & gt;) "(?????? 0 bmobobject @ @ QAE @ V? $basic_string @ DU? $char_traits @ D @ STD @ @ V? $allocator @ @ 2 D @ @ STD @ @ @ Z) referenced in the function of "public: __thiscall GameScore: : GameScore (class STD: : basic_string & lt; Char, struct STD: : char_traits & lt; Char> Class, STD: : allocator & gt;) "(?????? 0 gamescore @ @ QAE @ V? $basic_string @ DU? $char_traits @ D @ STD @ @ V? $allocator @ @ 2 D @ @ STD @ @ @ Z)
There are a lot of

What is the problem? How to solve, can explain in detail how to access bmob cocos2dx SDK?