21 lines
527 B
Python
21 lines
527 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, radius):
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self.radius = radius
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def area(self):
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return math.pi * self.radius * self.radius
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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()) |