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11th Computer Science Weekly Test -3 (Classes and objects )

MABS Institution

11th Computer Science Weekly Test -3 (Classes and objects )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

Class x
{
int y;
public:
x(int z){y=z;}
}xl[4];
int main()
{ x x2(10);
return 0;}
How many objects are created for the above program?

10
14
5
2

The default access specifier of class members is

private
protected
public
a or c

The members of a class will be allocate with memory space only after the creation of

object
global class
access specifiers
attributes

Which of the following statement is true or false?
(i) The memory space will be allocated to the members only after the creation of object
(ii) The members of the class can be accessed using dot(.) operator

i-true, ii-false
i-false, ii-true
i-true, ii-true
i-false, ii-false

Which of the following constructor is used to create a copy of an already existing object of a class type?

copy
default
Explicit
Implicit

Void simple:: putdata(simple x); is an example of

parameterized 'constructor
default constructor
Explicit call constructor
copy constructor

The member function defined within the class behave like.

inline functions
Non inline function
Outline function
Data function

The body of the class enclosed and terminated with

{ }, ;
[ ], ;
< >, ,
( ), ;

Void add :: getData ( ) is an example of

outline member function
normal function
non-inline member function
all of these

From the following snippet how many bytes occupies by the object a1?
class add
{
int a, b;
double c;
}a1;

8 bytes
16 bytes
12 bytes
20 bytes

Which of the following is not an access specifiers in class body?

privatedata
protectedata
publicdata
none of these

In the object creation statement Employee; which of the following true or false?
(i) Employee - object
(ii) e - class name

i-true, ii-true
i-false, ii-true
i-true, ii-false
i-false, ii-false

The class body contains ______________

information
only properties
only operations
members

Who developed C++?

Bjurne Strustrup
James Goushing
Dennis Retchie
Ken Thomson

test t2(t1); is an example of

copy constructor
default constructor
parareterized constructor
Implicit call to constructor

When a member function is defined outside a class, it behaves like

inline function
non-line function
procedural function
public function

Which of the following class members cannot be accessed from outside?

private
protected
public
both a and b

Which of the following statements about member functions are True or False?
(i) A member function can call another member function directly with using the dot operator.
(ii) Member function can access the private data of the class.

i-True, ii-True
i-False, ii-True
i-true, ii-False
i-False, ii-False

Which of the following operator's used to access the members of the class?

;
::
.
,

Which defining copy constructor the object should be passed only by

reference
value
global
Explicit

Which of the following is used to create user defined datatype?

properties
operations
behaviour
class

Match the following from the statement void diff::display ( )
(i) void-(1) Operator
(ii) diff-(2) Member function
(iii) ::-(3) return datatype
(iv) display( )-(4) class name

3,4,1,2
3,4,2,1
4,3,1,2
3,2,1,4

Which of the following represents the properties of a class?

members functions
data members
access specifiers
procedures

If there are multiple variables with the same name defined in seperate blocks then the variable can be accessed using

comma operator
conditional operator
size of operator
scope resolution opertor

An object created after the class declaration called

Global object
Local object
Normal object
in-line object

Which of the following constructor executed when inner class contains the outer class object?

inner class
outer class
Explicit class
none of these

Instantiating object is done using

inline function
outline function
constructor
initialize an object

In which of the following method the function works directly on the original object?

pass by method
pass by reference
pass by argument
pass by value

In the statement int add::putData( ), where int is called

class name
member function
operator
return datatype

The most important feature of C++ is the

procedure
Moduler
Class
data and functions

A member function can call another member function directly, without using the dot operator called as _______________

sub function
sub member
nesting of member function
sibling of member function

Which of the following statement is true or false?
(i) classes are not needed to represent real world, entities
(ii) classes are not used to create user defined datatype
(iii) class body contains the declaration of members

i-true, ii-false, iii-true
i-false, ii-false, iii-true
i-true, ii-false, iii-false
i-true, ii-true, iii-false

Methods are also called

member functions
data members
attributes
access specifiers

In which of the following method the function creates its own copy of the object and works on it?

pass by value
pass by reference
pass by object
pass by procedures

Which of the following are some special member functions that the class consists?

inline function
friend function
constructors
destructors
both c and d

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