20 lines
502 B
Python
20 lines
502 B
Python
class Shape:
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def area(self):
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return 0
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class Circle(Shape):
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def __init__(self, r):
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self.r = r
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def area(self):
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return 3.14 * self.r * self.r
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class Square(Shape):
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def __init__(self, side):
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self.side = side
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def area(self):
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return self.side * self.side
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r = float(input("请输入半径r:"))
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side = float(input("请输入边长side: "))
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shapes = [Circle(r), Square(side)]
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for i in shapes:
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print(i.__class__.__name__, "面积为:", i.area()) |