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CBSE AISSCE 2017-2018 Marking Scheme for Computer Science
(2018-2019 Sub Code: 083 Paper Code: 91)

NOTE:
● Deduct ½ Mark if CalVolume() is not invoked properly inside NewBox()
function
● Marks not to be deducted for replacing the Formulae for calculating
the Volumes with correct Formulae

(d) Answer the questions (i) to (iv) based on the following: 4
Class Top1(object):
def __init__(self,tx): #Line 1
self.X=tx #Line 2
def ChangeX(self,tx):
self.X=self.X+tx

def ShowX(self):
print self.X

Class Top2(object):
def __init__(self,ty): #Line 3
self.Y=ty #Line 4

def ChangeY(self,ty):
self.Y=self.Y+ty
def ShowY(self):
print self.Y,

class Bottom(Top1,Top2):
def __init__(self,tz): #Line 5
self.Z = tz #Line 6
Top2.__init__(self,2*tz) #Line 7
Top1.__init__(self,3*tz) #Line 8

def ChangeZ(self,tz):
self.Z=self.Z+tz
self.ChangeY(2*tz)
self.ChangeX(3*tz)
def ShowZ(self):
print self.Z,
self.ShowY()

self.ShowX()
B=Bottom(1)
B.ChangeZ(2)
B.ShowZ()

(i) Write the type of the inheritance illustrated in the above.

Ans Multiple Inheritance

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