Introduction - If you have any usage issues, please Google them yourself
/* Do an abstract shape class has a way to calculate the size of an abstract. Do two types of rectangular and circular shape inheritance calculated area of each category 2. In accordance with the size of the two graphics method members separate variables 3. Set graphics category contains the name and a graphic shape types of member variables and methods to achieve a shape with a member of the area of operation of Class 4. to do a test-class shape, respectively, according to different types of multi-modal object* /