関連ワード:  what is the data abstraction in c++    what is data abstraction in c++ with example    what is the purpose of data abstraction in c++    what is data abstraction in c++ in simple words    what is mean by data abstraction in c++    what is data abstraction in c++ in hindi    what is data abstraction in cpp    what is data abstraction and encapsulation in c++    what is abstract data type in c++    what is abstract data type in c++ with example