関連ワード:  how to create class object in cpp    how to create class object in c++    how to create class object in c++ using new    how to declare class object in c++    how to create a new class object in c++    how to create array of class objects in c++    how to create object of abstract class in cpp    how to create a vector of class objects in c++    how to make object of class in cpp    class and object in c++ with example