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

1 / 50

How to stop your program from eating so much ram?

Use the hard drive, instead of RAM

Declare it in program memory, instead of on the stack

All of the mentioned

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

2 / 50

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

friend_func

Friend

Friend_func

friend

3 / 50

Pick the incorrect statements out of the following.

No new operators can be created

Operator overloading does not disturbs the precedence of operators

Arity of operators can be changed using operator overloading

All of the mentioned

4 / 50

How to declare the complex number?

(3, 4)

(3, 4g)

(3, 4i)

complex(3, 4)

5 / 50

How many real types are there in complex numbers?

6 / 50

How many approaches are used for operator overloading?

7 / 50

What is the name of | operator?

and

modulus

sizeof

8 / 50

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

9 / 50

What is the associativity of add(+);?

right to left & left to right

top to bottom

left to right

right to left

10 / 50

How many parameters does a conversion operator may take?

as many as possible

11 / 50

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

12 / 50

Which container in c++ will take large objects?

class

string & class

string

vector

13 / 50

What is the syntax of friend function?

friend class;

friend class1 Class2;

friend class()

friend class

14 / 50

Which is the correct statement about operator overloading?

Associativity and precedence of operators does not change

Only arithmetic operators can be overloaded

Only non-arithmetic operators can be overloaded

Precedence of operators are changed after overlaoding

15 / 50

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

A operator+(argument_list){}

int [+](argument_list){}

A operator[+](argument_list){}

int +(argument_list){}

16 / 50

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

memory heap

stack & queue

queue

stack

17 / 50

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

pass by name

both pass by value & reference

pass by value

pass by reference

18 / 50

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

19 / 50

Which is called ternary operator?

|||

===

20 / 50

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

add the objects

both rename & delete the objects

delete the objects after processing

rename the objects

21 / 50

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

secondary memory

static memory

ram

virtual memory

22 / 50

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

real

imag

cartesian

norm

23 / 50

What is a friend function in C++?

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

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

24 / 50

Which keyword is used to declare the friend function?

firend

classfriend

friend

myfriend

25 / 50

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

[]

26 / 50

Which is the correct example of a unary operator?

27 / 50

What is the size of the heap?

500MB

10MB

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

1GB

28 / 50

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

dynamic_cast

static_cast

array subscript

Scope resolution operator

29 / 50

Pick out the correct syntax of operator conversion.

operator float()

operator const

operator float()const

operator const()

30 / 50

Which is the correct example of a binary operator?

Dereferencing operator(*)

31 / 50

Pick out the compound assignment statement.

a = a ? 5

a -= 5

a = a + 5

a = a / b

32 / 50

Which of the following operator cannot be overloaded?

33 / 50

Pick out the correct statement.

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

34 / 50

Why we use the ?dynamic_cast? type conversion?

result of the type conversion is a valid

it is used for storage

result of the type conversion is an invalid

to be used in low memory

35 / 50

How are types therein user-defined conversion?

36 / 50

Where does keyword ?friend? should be placed?

function declaration

main function

function definition

block function

37 / 50

Which of the following is correct about friend functions?

Friend functions can be private or public

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

All of the mentioned

Friend cannot access the members of the class directly

38 / 50

Which option is best to eliminate the memory problem?

use smart pointers & virtual destructor

use raw pointers

use smart pointers

use virtual destructor

39 / 50

What are the essential operators in c++?

All of the mentioned

40 / 50

Pick the correct statement.

Friend functions can access only protected members not the private members

Friend functions can be called using class objects

Friend functions can be invoked as a normal function

Friend functions are in the scope of a class

41 / 50

In which direction does the assignment operation will take place?

bottom to top

left to right

top to bottom

right to left

42 / 50

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

43 / 50

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

[]

()

44 / 50

How to unlimit the size of the stack?

setflimit()

unlimit()

both setrlimit() & unlimit()

setrlimit()

45 / 50

What is a binary operator?

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

Operator that performs its action on two operand

46 / 50

Which header file is used to declare the complex number?

complex number

complexarg

complexnum

complex

47 / 50

What is the return type of the conversion operator?

float

no return type

int

void

48 / 50

subscript operator is used to access which elements?

array

char

float

string

49 / 50

Which rule will not affect the friend function?

protected member can be accessed anywhere

private member can be accessed anywhere

private and protected member can be accessed anywhere

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

50 / 50

Which of the following operator can be overloaded?

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