IMP Question C++

QUESTION BANK

Classes and objects

Q1.What are the various characteristics of Object oriented programming techniques ?

Q2.What is a class ? How does it accomplish data hiding?

Q3.How do structure of C and C++ differ ?

Q4.Diifferentiate between private,public and protected?

Q5.Discuss the significance of scope resolution operator(:: ) in C++.

Q6.Compare object oriented  programming  with procedural programming?

Q7.What are the differences between objects and classes ?Discuss instantiation of  

      objects?

Q8.Distinguish between Object and Class ?

Q9.Explain  with the help of suitable example how data abstraction and data

     encapsulation takes place?

Q10.  What is difference between  a pointer and  a reference?              

Constructor and Destructor

Q11What is the difference between a constructor and a simple member function of a class? When is a constructor member function invoked in a class?

Q12. What is constructor overloading explain with example?

Q13.What is default Constructor  ? How is it different from constructor with default values?

Q14.Create a class ,which keeps track of number of instances of this class.Using Static data  members ,constructor and destructor to maintain updating information about active objects.

Q15. .Give an Illustration of copy constructor , multiple  constructs ,dynamic constructor 

        in   a class.

Q16.What is a destructor function  ? What is its use ? How many times is the destructor invoked?What happens if a destrucor is not given  in a class?

Q17.Write a program to read five real numbers and print average using a static member class .Use parameterized constructor for entering the numbers.

Q18.Distinguish between the following two statements:

            Item I1 (I2);

            Item I2 = I1;

Where I1 and I2 are objects of class Item.

Q19.Create a class for manipulating coordinates in Polar coordinate System .Represent points as objects .The class Polar must include data members  radius and theta .Member functions to add ,subtract and to find angle are to be included in the class.

Q20.What is an empty class? Can instances of empty class be created?

Friend Function

Q21. What  is a friend? Do friends violate encapsulation?

Q22 .Give some advantages and disadvantages of using Friend function?   

Q23.State True or false:Friend functions have access to  only  public members  of a class?

Q24. Illustrate with an example how can a common friend function to two different classes be declared?

Q25.Discuss the relation of a friend function  with public and protected data members of a class?

Pointers and Virtual Functions

Q25.What is Dangling pointer?

Q26. Explain ,with an example how an array of objects is created using pointers?

Q27.What is  significance of THIS pointer and how is it used?

Q28.What is Auto pointer?

Q29.What are pure virtual functions? How do they differ from normal virtual function?

Q30.What are virtual destrucors? How do they differ from normal destructors?

Q31.What is a smart pointer?

Q32.What is the difference between  const  char  *myPointer and char *const myPointer?

Q33.What is Overriding?

Q34.How are virtual functions implemented?

Inheritance

Q35.What is inheritance in C++?

Q36.Explain the need of inheritance in C++ using suitable examples?

Q37.What is visibility mode? What are the different inheritance visibility modes supported by C++.

Q38.With an example explin what are the different types of inheritance?

Q39.In what order are the class constructors called when a derived class object is created?

Q40.What is containership or delegation? How does it differ from inheritance?

Q41.Describe how an object of a class that contains objects of other classes is created?

Q42. What is an abstract class?

Polymorphism and Operator overloading

Q43.What is Polymorphism?

Q44.What is overloading?

Q45.Name the operators which cannot be overloaded?

Q46.What are the benefits of operator overloading?

Q47.Design a program to input two complex numbers and add them with + using operator overloading?

Q48.What is the difference between assignment operator and arithmetic assignment operator overloading?

Q49.Discuss  the benefits of constructor overloading? What are the similarities and differences between construcot and function overloading?

Q50.What are the limitations of overloading unary increment/decrement operator?How are they overcome?

Q51.Why is friend function not allowed to access members of a class directly although its body can appear within the class body?

Q52. Define two classes Polar and Rectangle to represent points in the polar and rectangle systems. Use conversion routines to convert from one system to the other.

Exception Handling

Q63.What is exception handling ? Explain try, throw and catch using an example?

Q64.What happens when a function throws an exception that was not specified by an exception specification for this function?

Q65.What are the advantages of using exception handling mechanism in a program?