Page 307 - C++

CBSE AISSCE 2016-2017 Marking Scheme for Computer Science
(Sub Code: 083 Paper Code 91 Outside Delhi)

Regno=1
Marks=75
def __init__(self,r,m): #function 1
self.Regno=r
self.Marks=m
def Assign(self,r,m): #function 2
Regno = r
Marks = m
def Check(self): #function 3
print self.Regno, self.Marks
print Regno, Marks

(i) ​In the above class definition, both the functions - function 1 as well
as function 2 have similar definition. How are they different in execution?
(ii) Write statements to execute function 1 and function 2.
Ans (i) Function 1 is the constructor which gets executed automatically as soon as
the object of the class is created. Function 2 is a member function which has
to be called to assign the values to Regno and Marks.

(ii) Function 1 ​E1=Exam(1,95) # Any values in the parameter
Function 2 ​E1.Assign(1,95) # Any values in the parameter

(1 mark for correct difference)
( ½ mark for each statement for executing Function 1 and Function 2)
(c) Define a class BOX in Python with following specifications 4
Instance Attributes
- BoxID # Numeric value with a default value 101
- Side # Numeric value with a default value 10
- Area # Numeric value with a default value 0

Methods:
- ExecArea() # Method to calculate Area as
# Side * Side
- NewBox() # Method to allow user to enter values of
# BoxID and Side. It should also
# Call ExecArea Method
- ViewBox() # Method to display all the Attributes

Ans class BOX:​ ​# can also be given as class BOX( ):
# or class BOX(Object):
def __init__(self):
self.BoxID=101
self.Side=10
self.Area=0
def ExecArea(self):
self.Area=self.Side*self.Side
def NewBox(self):
self.BoxID=input("Enter BoxID")
self.Side=input("Enter side")
self.ExecArea() # OR ExecArea(self)
def ViewBox(self):

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