Introduction - If you have any usage issues, please Google them yourself
simple definition of a rectangle from the upper left and lower right corner 2:00 definition of the rectangular object class. Such rectangle contains a copy of Constructors and a return rectangular object methods The targets included the current contains current object, and the rectangular pass as a parameter of the method, There is also a show for the rectangular point of the definition of the method. 4 rectangular formation of this type test