mca2030 smu mca Winter 2014 IInd sem assignment

Winter 2014, ASSIGNMENT

PROGRAM – MCA (REVISED FALL 2012)

SEMESTER - 2

SUBJECT CODE & NAME - MCA2030- OBJECT ORIENTED PROGRAMMING – C++

CREDIT – 4 BK ID - B1641, MAX. MARKS - 60

Q1. Differentiate between Constructors and Destructors.

Answer: Constructor:

• Constructor is Used to Initialize the Object.

• Constructor

Q2. Differentiate between Classes and Objects. Write an example program to represent a class and its object. 4+6= 10

Answer:

Classes and objects are separate but related concepts. Every object belongs to a class and every class contains one or more related objects.

A Class is

Q3. Describe operator overloading. Which are the operators that cannot be overloaded?

5+5= 10

Answer: Operator overloading is an interesting feature of C++ that allows programmers to specify how various arithmetic, relational and many other operators work with user defined data types or

Q4. What are the advantages of Polymorphism? How it can be implemented? 5+5=10

Answer: Advantages

·         Code is simpler to write (and read)

·         Uniform interface for clients, i.e., type specific details only in class code, not in the client code

·         Change in types in the class does not effect the clients

·         If type change

·          

Q5. Differentiate between Containers and Iterators 5+5= 10

Answer: Containers

STL provides a number of container types, representing objects that contain other objects. The STL contains sequence containers and associative containers. The standard sequence containers include vector, deque and list, sequence containers in, as their name suggests, store data in linear sequence. The standard

Q6. Describe the two basic exception handling models. 5+5= 10

Answer: If you encounter an exceptional situation in your code – that is, one where you don’t have enough information in the current context to decide what to do – you can send information about the error into a larger context by creating an object containing that information and “throwing” it out

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