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

1 / 50

What does a default header file contain?

prototype

declarations

implementation

pointing

2 / 50

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

private

protected

public

public & protected

3 / 50

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

4 / 50

How many specifiers are present in access specifiers in class?

5 / 50

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

6 / 50

How to access the object in the class?

scope resolution operator

ternary operator

direct member access operator

resolution operator

7 / 50

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

8 / 50

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

Using a special keyword object

By passing self as a parameter in the member function

Using this pointer

Using * with the name of that object

9 / 50

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

cpp

10 / 50

Which category of data type a class belongs to?

Atomic data type

User defined derived data type

Fundamental data type

Derived data type

11 / 50

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

;

12 / 50

Which of the following operators can?t be overloaded?

[]

13 / 50

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

namespace

string

exclude

include

14 / 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 never be changed

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

A member that is global throughout the class

15 / 50

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

single linkage

external

internal

no linkage

16 / 50

Where does the object is created?

class

attributes

destructor

constructor

17 / 50

What does a class in C++ holds?

functions

arrays

both data & functions

data

18 / 50

Identify the correct statement.

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

typedef will not creates synonyms of existing types

typedef create own types

typedef create different types

19 / 50

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

access is denied

access is protected by default

access is public by default

access is private by default

20 / 50

Constructors are used to ____________

construct the data members

both initialize the objects & construct the data members

initialize the objects

delete the objects

21 / 50

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

The overloaded operators follow the syntax rules of the original operator

Only existing operators can be overloaded

None of the mentioned

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

22 / 50

To use external linkage we have to use which keyword?

extern

argc

static

const

23 / 50

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

24 / 50

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

25 / 50

Operator overloading is ___________

making the new operator

adding operation to the existing operators

making c++ operator works with objects

giving new meaning to existing operator

26 / 50

What is the scope of typedef defined data types?

main function

whole program

inside that block only

outside the program

27 / 50

Pick out the other definition of objects.

associate of the class

instance of the class

member of the class

attribute of the class

28 / 50

setprecision requires which of the following header file?

conio.h

iomanip.h

stdlib.h

console.h

29 / 50

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

both struct & union

struct

object

union

30 / 50

Identify the incorrect statement.

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

31 / 50

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

external linkage

internal & external linkage

no linkage

internal linkage

32 / 50

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

They reduce function call overheads

They are generally very large and complicated function

These functions are inserted/substituted at the point of call

Saves overhead of a return call from a function

33 / 50

To use internal linkage we have to use which keyword?

extern

static

public

static or extern

34 / 50

Which of the following header file does not exist?

35 / 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

36 / 50

Which functions of a class are called inline functions?

All the functions accessing static members of the class

All functions defined inside or with the inline keyword

All the functions containing declared inside the class

All the functions that are defined outside the class

37 / 50

What does the data type defined by union will do?

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

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

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

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

38 / 50

Pick the other name of operator function.

function overloading

operator overloading

member overloading

object overloading

39 / 50

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

declaration

prototype

variable

code

40 / 50

How many objects can present in a single class?

as many as possible

41 / 50

What is operator overloading in C++?

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

Redefining the way operator works for user defined types

All of the mentioned

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

42 / 50

How to declare operator function?

name of the operator

name of the class

operator sign

operator

43 / 50

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

public

private

protected

both private & protected

44 / 50

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

fstream.h

ofstream.h

console.h

ifstream.h

45 / 50

What is the syntax of user-defined data types?

def NameByUser ExistingData

typedef ExistingDataType NameByUser

def NameByUser ExistingDataType

typedef NameByUser ExistingDataType

46 / 50

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

typedef

def

type

union

47 / 50

Which of the following is a valid class declaration?

class A { int x; };

class B { }

public class A { }

object A { int x; };

48 / 50

What is the use of no linkage?

make the entity visible to other programs

make the entity invisible

make the entity visible only to that block

make the entity visible to other blocks in the same program

49 / 50

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

!!$

50 / 50

Inline functions are avoided when ____________________________

all of the mentioned

function have recursive calls

function have loops

function contains static variables

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