factory.h:8:  public: should be indented +1 space inside class Object  [whitespace/indent] [3]
factory.h:15:  public: should be indented +1 space inside class Apple  [whitespace/indent] [3]
factory.h:22:  public: should be indented +1 space inside class List  [whitespace/indent] [3]
factory.h:29:  public: should be indented +1 space inside class YetAnother  [whitespace/indent] [3]
factory.h:36:  public: should be indented +1 space inside class Factory  [whitespace/indent] [3]
factory.h:53:  private: should be indented +1 space inside class Factory  [whitespace/indent] [3]
factory.h:54:  Add #include <string> for string  [build/include_what_you_use] [4]
Done processing factory.h
Total errors found: 7