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Concept Of Object Oriented Programming

Question
CBSEENCO12011584
Wired Faculty App

List four characteristics of Object Oriented programming.

Solution
Encapsulation – Encapsulation is capturing data and keeping it safely and securely from outside interfaces.
Inheritance- This is the process by which a class can be derived from a base class with all features of the base class and some of its own. This increases code reusability.
Polymorphism- This is the ability to exist in various forms. For example, an operator can be overloaded so as to add two integer numbers and two floats.
Abstraction- The ability to represent data at a very conceptual level without any details.

Some More Questions From Concept of Object Oriented Programming Chapter

What will be the output of the following python code considering the following set of inputs?

JAYA
My 3 books
PICK2
2120

Also, explain the try and except used in the code.

Counter=0
while True:
	try:
		Number=int(raw_input('Give a Number'))
		break
	except ValueError:
		Counter=Counter+2
		print('Reenter Number')
print(Counter)

Write a class CITY in Python with following specifications
Instance Attributes

-Code   # Numeric value
-Name # String value
-Pop      #Numeric value of population
-KM      # Numeric value
-Density #Numeric value for Population Density

Methods:
CalDen()# Method to calculate Density as Pop/KM
Record()# Method to allow user to enter values
Code,Name,Pop,KM and call CalDen() method
See()# Method to display all the members also display
              a message ”Highly Populated Area” 
              if the Density is more than 12000

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