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

1 / 50

How many approaches are used for operator overloading?

2 / 50

How are types therein user-defined conversion?

3 / 50

What are the essential operators in c++?

All of the mentioned

4 / 50

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

5 / 50

What is the syntax of friend function?

friend class()

friend class;

friend class1 Class2;

friend class

6 / 50

Where does keyword ?friend? should be placed?

function definition

main function

block function

function declaration

7 / 50

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

add the objects

delete the objects after processing

rename the objects

both rename & delete the objects

8 / 50

Which rule will not affect the friend function?

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

private member can be accessed anywhere

protected member can be accessed anywhere

private and protected member can be accessed anywhere

9 / 50

Pick the incorrect statements out of the following.

No new operators can be created

Operator overloading does not disturbs the precedence of operators

All of the mentioned

Arity of operators can be changed using operator overloading

10 / 50

Pick out the compound assignment statement.

a = a / b

a = a ? 5

a -= 5

a = a + 5

11 / 50

Which is the correct example of a unary operator?

12 / 50

Why we use the ?dynamic_cast? type conversion?

to be used in low memory

result of the type conversion is an invalid

result of the type conversion is a valid

it is used for storage

13 / 50

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

queue

stack & queue

memory heap

stack

14 / 50

Which is the correct example of a binary operator?

Dereferencing operator(*)

15 / 50

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

[]

16 / 50

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

17 / 50

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

18 / 50

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

both pass by value & reference

pass by value

pass by name

pass by reference

19 / 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 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

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

20 / 50

What is the associativity of add(+);?

right to left

right to left & left to right

left to right

top to bottom

21 / 50

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

22 / 50

In which direction does the assignment operation will take place?

bottom to top

left to right

top to bottom

right to left

23 / 50

Which keyword is used to declare the friend function?

classfriend

friend

myfriend

firend

24 / 50

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

[]

()

25 / 50

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

imag

real

cartesian

norm

26 / 50

What is the return type of the conversion operator?

float

void

int

no return type

27 / 50

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

Friend

friend_func

Friend_func

friend

28 / 50

Which is called ternary operator?

|||

===

29 / 50

Which is the correct statement about operator overloading?

Associativity and precedence of operators does not change

Precedence of operators are changed after overlaoding

Only arithmetic operators can be overloaded

Only non-arithmetic operators can be overloaded

30 / 50

Which of the following operator cannot be overloaded?

31 / 50

How many parameters does a conversion operator may take?

as many as possible

32 / 50

What is the name of | operator?

and

sizeof

modulus

33 / 50

Pick out the correct statement.

None of the mentioned

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

A friend function may not be a member of another class

A friend function may be a member of another class

34 / 50

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

static memory

virtual memory

secondary memory

ram

35 / 50

Which option is best to eliminate the memory problem?

use smart pointers

use smart pointers & virtual destructor

use virtual destructor

use raw pointers

36 / 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 three operand

Operator that performs its action on a single operand

37 / 50

How many real types are there in complex numbers?

38 / 50

Which of the following operator can be overloaded?

39 / 50

Which header file is used to declare the complex number?

complexnum

complex number

complex

complexarg

40 / 50

subscript operator is used to access which elements?

float

array

string

char

41 / 50

How to stop your program from eating so much ram?

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

All of the mentioned

Use the hard drive, instead of RAM

Declare it in program memory, instead of on the stack

42 / 50

Pick the correct statement.

Friend functions can access only protected members not the private members

Friend functions can be invoked as a normal function

Friend functions are in the scope of a class

Friend functions can be called using class objects

43 / 50

What is the size of the heap?

10MB

500MB

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

1GB

44 / 50

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

int [+](argument_list){}

A operator[+](argument_list){}

int +(argument_list){}

A operator+(argument_list){}

45 / 50

How to unlimit the size of the stack?

both setrlimit() & unlimit()

setflimit()

unlimit()

setrlimit()

46 / 50

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

Scope resolution operator

dynamic_cast

static_cast

array subscript

47 / 50

Which container in c++ will take large objects?

string

string & class

class

vector

48 / 50

Pick out the correct syntax of operator conversion.

operator const

operator const()

operator float()

operator float()const

49 / 50

Which of the following is correct about friend functions?

Friend functions can be private or public

All of the mentioned

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

Friend cannot access the members of the class directly

50 / 50

How to declare the complex number?

(3, 4g)

complex(3, 4)

(3, 4)

(3, 4i)

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