MIDTERM EXAMINATION Solved Paper Of CS304- Object Oriented Programming

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Question No: 1    ( Marks: 1 )    - Please choose one

No instances can be created from an abstract class.

       ► True       ► False

   

Question No: 2    ( Marks: 1 )    - Please choose one

Aggregation is implemented using pointer.

       ► True       ► False

   

Question No: 3    ( Marks: 1 )    - Please choose one

Your chief Software designer has shown you a sketch of the new Computer parts system she is about to create. At the top of the hierarchy is a Class called Computer and under this are two child classes. One is called LinuxPC and one is called WindowsPC. The main difference between the two is that one runs the Linux operating System and the other runs the Windows System (of course another difference is that one needs constant re-booting and the other runs reliably). Under the WindowsPC are two Sub classes one called Server and one Called Workstation. How might you appraise your designers work?

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       ► Give the goahead for further design using the current scheme

       ► Ask for a re-design of the hierarchy with changing the Operating System to a field rather than Class type

       ► Ask for the option of WindowsPC to be removed as it will soon be obsolete

       ► Change the hierarchy to remove the need for the superfluous Computer Class.

   

Question No: 4    ( Marks: 1 )    - Please choose one

The ______ keyword tells the compiler to substitute the code within the function definition for every instance of a function call.

       ► virtual       ► inline       ► instance       ► None of given.

   

Question No: 5    ( Marks: 1 )    - Please choose one

   Which construct is the source for the creation of an object?

       ► Destructor of the class       ► New operator       ► Delete operator       ► Constructor of the class

   

Question No: 6    ( Marks: 1 )    - Please choose one

Which will be the good example of a method that is shared by all instances of a class?

       ► Constructor       ► Attribute       ► Constructor and Attribute       ► None of given options

   

Question No: 7    ( Marks: 1 )    - Please choose one

__________ provide the facility to access the data member.

       ► accesser function        ► private function       ► inline function        ► None of the given

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Question No: 8    ( Marks: 1 )    - Please choose one

A static member function cannot be declared.

       ► Static       ► Implicit       ► Explicit       ► Virtual

   

Question No: 9    ( Marks: 1 )    - Please choose one

A non-static member function can be called only after _______ the class as an object.

       ► Instantiating       ► Declaring       ► Defining       ► Opening

   

Question No: 10    ( Marks: 1 )    - Please choose one

Static variable is created even when there is no object of a class is created.

       ► True       ► False

   

Question No: 11    ( Marks: 1 )    - Please choose one

In _______________ a pointer or reference to an object is created inside a class.

       ► Aggregation        ► Composition       ► Separation       ► None of the given

   

Question No: 12    ( Marks: 1 )    - Please choose one

Friend class and friend function can be used as an alternate to each other

       ► True       ► False

   

Question No: 13    ( Marks: 1 )    - Please choose one

Constructor/s with a different signature than default constructor is/are called?

       ► Overloaded Constructor/s         ► Default Constructor/s

       ► Simple Constructor/s                            ► Multiple Constructor/s

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Question No: 14    ( Marks: 1 )    - Please choose one

Operator overloading is

       ► making C++ operators work with objects.        ► giving C++ operators more than they can handle.

       ► giving new meanings to existing Class members.        ► making new C++ operators.

   

Question No: 15    ( Marks: 1 )    - Please choose one

The statement objA=objB; will cause a compiler error if the objects are of different classes.

       ► True       ► False

   

Question No: 16    ( Marks: 1 )    - Please choose one

Which operator can not be overloaded?

       ► The relation operator ( >= )                   ► Assignment operator ( = )

       ► Script operator ( [] )                              ► Conditional operator (? : )

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Question No: 17    ( Marks: 1 )

Give two examples of binary operators.

Question No: 18    ( Marks: 1 )

Give one line definition of "Model".

A model is an abstraction of something real or conceptual.

Question No: 19    ( Marks: 2 )

Write a statement that a member function can use to return the entire object of which it is a member, without creating any temporary objects.

Following staement can return the entire object of which it is a member.Member function is a function which is declared in the public part of class.

Question No: 20    ( Marks: 3 )

Give example c++ code to overload unary ‘ ++ ‘ operator for complex numbers class.

Code:

Question No: 21    ( Marks: 5 )

 Describe base and derived class’s relationship with at least two examples.

Any parent class is called the base class. And the class that is derived from it is its child class and called as Derived class. Examples are given:

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