Description: Declare an abstract class Shape, on this basis, derived classes Rectangle and Circle, the two have GetArea () and GetPerim () function, GetArea used to calculate the object' s size, GetPerim used to calculate the object perimeter. The above types of packaging,
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3001
....\1.cpp
....\3001.dsp
....\3001.dsw
....\3001.ncb
....\3001.opt
....\3001.plg
....\Debug
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