Source Files, Classes and Operator Overloading in C++ Quiz 2

1 / 50

What is the syntax of friend function?

friend class;

friend class

friend class()

friend class1 Class2;

2 / 50

Which header file is used to declare the complex number?

complex

complex number

complexarg

complexnum

3 / 50

Which of the following is not a function of complex values?

real

imag

norm

cartesian

4 / 50

How to stop your program from eating so much ram?

Use the hard drive, instead of RAM

Find a way to work with the data one at a time

Declare it in program memory, instead of on the stack

All of the mentioned

5 / 50

subscript operator is used to access which elements?

string

array

float

char

6 / 50

How many real types are there in complex numbers?

7 / 50

Which is used to pass the large objects in c++?

pass by reference

pass by value

pass by name

both pass by value & reference

8 / 50

Which is the correct example of a binary operator?

Dereferencing operator(*)

9 / 50

Which of the following is correct about friend functions?

Friend cannot access the members of the class directly

Friend functions use the dot operator to access members of a class using class objects

Friend functions can be private or public

All of the mentioned

10 / 50

How to store the large objects in c++ if it extends its allocated memory?

queue

memory heap

stack & queue

stack

11 / 50

Which of the following operator cannot be used to overload when that function is declared as friend function?

[]

12 / 50

Which of the following operator cannot be overloaded?

13 / 50

Which is called ternary operator?

|||

===

14 / 50

How many parameters does a conversion operator may take?

as many as possible

15 / 50

When we are using heap operations what do we need to do to save the memory?

rename the objects

both rename & delete the objects

delete the objects after processing

add the objects

16 / 50

What is a binary operator?

Operator that performs its action on two operand

Operator that performs its action on any number of operands

Operator that performs its action on a single operand

Operator that performs its action on three operand

17 / 50

In the case of friend operator overloaded functions how many maximum object arguments a unary operator overloaded function can take?

18 / 50

What are the essential operators in c++?

All of the mentioned

19 / 50

Why we use the ?dynamic_cast? type conversion?

result of the type conversion is an invalid

result of the type conversion is a valid

to be used in low memory

it is used for storage

20 / 50

Which is the correct statement about operator overloading?

Only arithmetic operators can be overloaded

Precedence of operators are changed after overlaoding

Only non-arithmetic operators can be overloaded

Associativity and precedence of operators does not change

21 / 50

What is the return type of the conversion operator?

void

no return type

float

int

22 / 50

Which of the following operator can be overloaded?

23 / 50

Which option is best to eliminate the memory problem?

use raw pointers

use virtual destructor

use smart pointers & virtual destructor

use smart pointers

24 / 50

Pick out the correct statement.

A friend function may be a member of another class

A friend function may not be a member of another class

None of the mentioned

A friend function may or may not be a member of another class

25 / 50

Which of the following operator can be used to overload when that function is declared as friend function?

[]

()

26 / 50

How to declare the complex number?

(3, 4i)

complex(3, 4)

(3, 4)

(3, 4g)

27 / 50

What is the size of the heap?

1GB

Size of the heap memory is limited by the size of the RAM and the swap memory

10MB

500MB

28 / 50

Where does keyword ?friend? should be placed?

block function

main function

function declaration

function definition

29 / 50

Which operator is having the highest precedence in c++?

Scope resolution operator

static_cast

array subscript

dynamic_cast

30 / 50

Which is the correct example of a unary operator?

31 / 50

1. Which keyword is used to represent a friend function?

Friend

Friend_func

friend

friend_func

32 / 50

In the case of friend operator overloaded functions how many maximum object arguments a binary operator overloaded function can take?

33 / 50

Pick the correct statement.

Friend functions are in the scope of a class

Friend functions can be invoked as a normal function

Friend functions can access only protected members not the private members

Friend functions can be called using class objects

34 / 50

In Linux, how do the heaps and stacks are managed?

static memory

secondary memory

virtual memory

ram

35 / 50

In case of non-static member functions how many maximum object arguments a binary operator overloaded function can take?

36 / 50

1. In case of non-static member functions how many maximum object arguments a unary operator overloaded function can take?

37 / 50

Pick out the correct syntax of operator conversion.

operator float()

operator const

operator float()const

operator const()

38 / 50

How many approaches are used for operator overloading?

39 / 50

What is the name of | operator?

modulus

sizeof

and

40 / 50

What is the associativity of add(+);?

right to left & left to right

left to right

right to left

top to bottom

41 / 50

Which rule will not affect the friend function?

private and protected members of a class cannot be accessed from outside

private and protected member can be accessed anywhere

protected member can be accessed anywhere

private member can be accessed anywhere

42 / 50

Which keyword is used to declare the friend function?

myfriend

friend

firend

classfriend

43 / 50

How are types therein user-defined conversion?

44 / 50

Pick the incorrect statements out of the following.

All of the mentioned

Arity of operators can be changed using operator overloading

Operator overloading does not disturbs the precedence of operators

No new operators can be created

45 / 50

In which direction does the assignment operation will take place?

top to bottom

right to left

bottom to top

left to right

46 / 50

What is a friend function in C++?

A function which is allowed to access public and protected members of a class

A function which is allowed to access only public members of a class

A function which can access all the private, protected and public members of a class

A function which is not allowed to access any member of any class

47 / 50

How to unlimit the size of the stack?

both setrlimit() & unlimit()

setflimit()

setrlimit()

unlimit()

48 / 50

What is the syntax of overloading operator + for class A?

int [+](argument_list){}

int +(argument_list){}

A operator[+](argument_list){}

A operator+(argument_list){}

49 / 50

Which container in c++ will take large objects?

class

vector

string

string & class

50 / 50

Pick out the compound assignment statement.

a = a / b

a -= 5

a = a ? 5

a = a + 5

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