Introduction - If you have any usage issues, please Google them yourself
(2) design a circle class Circle and a table class Table in the the design a roundtable class Roundatable, it is derived from the previous two classes. The required output of the round table data such as height, area, color. Class Circle contains the member functions of the data members of the radius and area of a circle class Table contains data members height and return to the high level of member functions, classes Roundtable add a data member color and corresponding member function.