Source Files, Classes and Operator Overloading in C++ Quiz 1

1 / 50

Constructors are used to ____________

delete the objects

construct the data members

initialize the objects

both initialize the objects & construct the data members

2 / 50

What does a default header file contain?

pointing

implementation

declarations

prototype

3 / 50

How many specifiers are present in access specifiers in class?

4 / 50

Identify the incorrect statement.

iostream is a standard header and iostream.h is a non-standard header

iostream is a standard header and iostream.h is a standard header

iostream is a non-standard header and iostream.h is a non-standard header

iostream is a non-standard header

5 / 50

Pick the other name of operator function.

member overloading

operator overloading

object overloading

function overloading

6 / 50

What does a mutable member of a class mean?

A member that can be updated even if it a member of constant object

A member that can be updated only if it not a member of constant object

A member that can never be changed

A member that is global throughout the class

7 / 50

Which other keywords are also used to declare the class other than class?

object

both struct & union

union

struct

8 / 50

Which of the header file must be included to use stringstream?

9 / 50

What is the default type of linkage that is available for identifiers?

external

internal

no linkage

single linkage

10 / 50

Which of the following is a valid class declaration?

public class A { }

class A { int x; };

object A { int x; };

class B { }

11 / 50

setprecision requires which of the following header file?

console.h

conio.h

iomanip.h

stdlib.h

12 / 50

Which of the following operators can?t be overloaded?

[]

13 / 50

Inline functions are avoided when ____________________________

all of the mentioned

function have loops

function have recursive calls

function contains static variables

14 / 50

Which is used to define the member of a class externally?

!!$

15 / 50

Which one is used to refer to program elements in any translation units?

internal & external linkage

internal linkage

external linkage

no linkage

16 / 50

Which operator a pointer object of a class uses to access its data members and member functions?

17 / 50

Which category of data type a class belongs to?

User defined derived data type

Fundamental data type

Atomic data type

Derived data type

18 / 50

How to access the object in the class?

scope resolution operator

resolution operator

ternary operator

direct member access operator

19 / 50

How many objects can present in a single class?

as many as possible

20 / 50

Which keyword is used to define the user defined data types?

type

def

typedef

union

21 / 50

Which special character is used to mark the end of class?

;

22 / 50

Pick out the other definition of objects.

associate of the class

instance of the class

member of the class

attribute of the class

23 / 50

How the objects are self-referenced in a member function of that class.

Using this pointer

Using * with the name of that object

Using a special keyword object

By passing self as a parameter in the member function

24 / 50

Which of the following keyword is used to declare the header file?

include

namespace

exclude

string

25 / 50

How many types of user-defined data type are in c++?

26 / 50

What is operator overloading in C++?

Overriding the operator meaning by the user defined meaning for user defined data type

Ability to provide the operators with some special meaning for user defined data type

All of the mentioned

Redefining the way operator works for user defined types

27 / 50

What is the user-defined header file extension in c++?

cpp

28 / 50

Pick the correct statement.

Macros looks like function calls but they are actually not

Inline functions looks like function but they are not

Inline function are always large

Macros and inline functions are same thing

29 / 50

When struct is used instead of the keyword class means, what will happen in the program?

access is private by default

access is denied

access is protected by default

access is public by default

30 / 50

To use internal linkage we have to use which keyword?

public

static or extern

static

extern

31 / 50

What does the data type defined by union will do?

It allow one different portion of memory to be accessed as different data types

It allow one different portion of memory to be accessed as same data types

It allow one same portion of memory to be accessed as different data types

It allow one same portion of memory to be accessed as same data types

32 / 50

What is the scope of typedef defined data types?

whole program

outside the program

main function

inside that block only

33 / 50

Which functions of a class are called inline functions?

All the functions containing declared inside the class

All the functions accessing static members of the class

All functions defined inside or with the inline keyword

All the functions that are defined outside the class

34 / 50

To use external linkage we have to use which keyword?

argc

static

const

extern

35 / 50

What does a class in C++ holds?

both data & functions

data

arrays

functions

36 / 50

The data members and functions of a class in C++ are by default ____________

protected

public

private

public & protected

37 / 50

Operator overloading is ___________

making c++ operator works with objects

giving new meaning to existing operator

adding operation to the existing operators

making the new operator

38 / 50

How many types of linkages are there in C++?

39 / 50

Which of the following header file does not exist?

40 / 50

What is the use of no linkage?

make the entity visible to other blocks in the same program

make the entity visible only to that block

make the entity visible to other programs

make the entity invisible

41 / 50

Which of these following members are not accessed by using direct member access operator?

public

both private & protected

private

protected

42 / 50

Which of the following statements is NOT valid about operator overloading?

The overloaded operators follow the syntax rules of the original operator

The overloaded operator must have at least one operand of its class type

Only existing operators can be overloaded

None of the mentioned

43 / 50

Where does the object is created?

constructor

destructor

class

attributes

44 / 50

Which is used to use a function from one source file to another?

variable

code

declaration

prototype

45 / 50

Pick the incorrect statement about inline functions in C++?

Saves overhead of a return call from a function

These functions are inserted/substituted at the point of call

They are generally very large and complicated function

They reduce function call overheads

46 / 50

How many types of models are available to create the user-defined data type?

47 / 50

Identify the correct statement.

typedef does not create different types. It only creates synonyms of existing types

typedef create own types

typedef will not creates synonyms of existing types

typedef create different types

48 / 50

What is the syntax of user-defined data types?

def NameByUser ExistingDataType

typedef NameByUser ExistingDataType

def NameByUser ExistingData

typedef ExistingDataType NameByUser

49 / 50

How to declare operator function?

name of the class

operator sign

name of the operator

operator

50 / 50

Which of the following header files is required for creating and reading data files?

ofstream.h

console.h

ifstream.h

fstream.h

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