Class Hierarchies, Library & Containers Quiz 4

1 / 50

In how many ways we can handle errors in any class?

2 / 50

Which of the following is correct about tuple_size?

Returns the number of elements in a tuple

Returns the sum of non-string values

Returns the total number of bits used by the tuple

Returns the maximum sized type element

3 / 50

What is the full form of vptr?

Virtual Pointer

V type Pointer

Virtual-vector Pointer

Vector Pointer

4 / 50

Which of the following is correct about tuples?

A tuple can hold elements having different types

Elements of tuples are initialized in order

All of the mentioned

A tuple can hold more than one element

5 / 50

Which of the following is correct about swap()?

Swaps elements of a tuple alternatively

Swaps last elements of two tuples

Swaps first element of both tuples

Swaps two tuples

6 / 50

Elements in STL heap are removed in ________________________

alternate i.e. once max element then min element

increasing order

input order

decreasing order

7 / 50

How many Pseudo-random number engines are there?

8 / 50

Which of the following is correct syntax of making heap from a vector v?

make_heap(v.begin(), v.end());

make_heap(v.elements);

make_heap(v.end(), v.begin());

make_heap(v);

9 / 50

Which of the following is the correct way of declaring a tuple?

Tuple <type1, type2, type3> tp;

tuple <type1, type2, type3> tp;

tuple tp<type1, type2, type3>;

tuple tp = new tuple<type1, type2, type3>;

10 / 50

Which function is used to insert an element into heap?

push_heap()

push_back()

pop_heap()

pop_back()

11 / 50

What is the use of rank() function in C++?

Returns size of each dimension

Returns how many elements are in array currently

Returns how many total elements can be stored in an array

Returns the dimension of an array

12 / 50

Which header file is required to use tuples in your program?

<tuple>

<stl>

<array>

13 / 50

Which of the following is correct about remove_extent() function?

Removes the last dimension from the left of the array

Removes the given dimension from an array

Removes the first dimension from the left of the array

Removes the first dimension from the right of the array

14 / 50

Which classes can have vtable?

Classes having virtual functions

Classes having friend functions

All classes have a vtable

Classes having static functions

15 / 50

How many Engine Adaptors are there in C++?

16 / 50

What is vptr?

A hidden pointer in a class that points to virtual functions of that class

A hidden pointer in a class that points to a virtual table of that class

A pointer in a class that points to other class

A hidden pointer in a class that points to virtual members of the class of that class

17 / 50

What is the use of has_value() function in any container?

Used to change the object any container is holding

Used to return the type information about the any container

Used to check whether any container is empty or not

Used to destroys the contained object in any variable

18 / 50

vptr is _______________

a real pointer

passed as a parameter to all functions of class

used to resolve self-references

like this pointer of class

19 / 50

Which header file is used for generating random numbers?

<gen_dist>

20 / 50

Which of the following is correct about remove_all_extents() function?

Removes the all dimension from an array

Removes the first dimension from the right of the array

Removes the last dimension from the left of the array

Removes the first dimension from the left of the array

21 / 50

Which header file is required to use heap in your program?

<map>

<heap>

22 / 50

What are different operations are used in Pseudo-random number engines?

min()

max()

operator()

all of the mentioned

23 / 50

Which type of heap is implemented in STL heap?

close heap

max heap

middle heap

min heap

24 / 50

Which function is used to construct heap from given sequence of numbers?

make_heap()

construct_heap()

create_heap()

start_heap()

25 / 50

What is the use of reset() function?

Used to change the object any container is holding

Used to check the type of any variable

Used to empty any container value

Used to destroys the contained object in any variable

26 / 50

What is the full form of vtable?

V type table

Virtual-vector table

Vector table

Virtual table

27 / 50

Which of the following is correct about extent() function?

Returns how many total elements can be stored in an array

Returns the size of the 1st dimension

Returns the size of a given dimension

Returns how many elements are in array currently

28 / 50

1. What is the use of sort_heap() function in heap?

To sort the elements in the heap into descending order

To sort the elements in the heap into ascending order

To sort the second half of the heap

To sort the first half of the heap

29 / 50

What is the use of front() function in heap?

Returns the element closest to the median of a sequence

Returns the last element of the heap

Returns the first element of the heap

Returns the element closest to mean of a sequence

30 / 50

What is linear_congruential_engine?

Pseudo-random number engine that generates random unsigned integers in the range [0, 2w-1] for some w using lagged Fibonacci generator

Pseudo-random number engine that generates random unsigned integers

Pseudo-random number engine that generates random unsigned integers in the range [0, 2w-1] for some w using Mersenne Twister algorithm

Pseudo-random number engine that generates random signed integers in the range [0, 2w-1] for some w using Mersenne Twister algorithm

31 / 50

What is the use of is_array() function in C++?

To check if a variable is 1-D array type or not

To check if a variable is 1-D or 2-D array type or not

To check if a variable is array type or not

To check if a variable is 2-D array type or not

32 / 50

What is the use of tie() function?

Used to unpack the values of a tuple

Used to replace elements

Used to check whether two tuples are the same or not

Used to delete elements

33 / 50

What is mersenne_twister_engine?

Pseudo-random number engine that generates random unsigned integers in the range [0, 2w-1] for some w using Mersenne Twister algorithm

Pseudo-random number engine that generates random signed integers in the range [0, 2w-1] for some w using Mersenne Twister algorithm

Pseudo-random number engine that generates random unsigned integers in the range [0, 2w-1] for some w using lagged Fibonacci generator

Pseudo-random number engine that generates random unsigned integers

34 / 50

What is vtable in C++?

Lookup table to resolve function calls in static manners

Lookup table to see which are the functions available for calls throughout the program

Lookup table to check how many functions are there int he program

Lookup table to resolve function calls in dynamic manners

35 / 50

What are Engine Adaptors?

Mersenne Twister 19937 generator generating 32-bit true random number

Class template that adopts a pseudo-random number generator engine

Random number engine that generates pseudo-random numbers

Class template that adopts a pseudo-random number generator engine to produce numbers with a given numbers of bits

36 / 50

Which of the header file is used for array type manipulation?

<array>

std namespace

<type_traits>

37 / 50

What are the Generators in C++?

An object that generates uniformly distributed numbers

An object that generates the smallest number from a given range

An object that generates a number from a given sequence

An object that generates unique numbers

38 / 50

Which function is used to check whether a given sequence is heap or not?

check_heap()

is_heap()

sort_heap()

is_heap_until()

39 / 50

What is the default random engine?

Mersenne Twister 19937 generator generating 32-bit pseudo random number

Random number engine that generates true random numbers

Random number engine that generates pseudo-random numbers

Mersenne Twister 19937 generator generating 32-bit true random number

40 / 50

What is subtract_with_carry_engine?

Pseudo-random number engine that generates random unsigned integers in the range [0, 2w-1] for some w using lagged Fibonacci generator

Pseudo-random number engine that generates random unsigned integers in the range [0, 2w-1] for some w using Mersenne Twister algorithm

Pseudo-random number engine that generates random signed integers in the range [0, 2w-1] for some w using Mersenne Twister algorithm

Pseudo-random number engine that generates random unsigned integers

41 / 50

What are Distributions in C++?

Objects that converts a sequence into a sequence having an ascending order

Objects that converts a sequence into a sequence having a descending order

Objects that converts a sequence into a sequence having specific random variable distribution

Objects that converts a sequence into a sequence having only the smallest, largest and median

42 / 50

What is a Random number generator?

A generator that generates non-deterministic random numbers

A generator that generates deterministic random numbers

A generator that generates a simple random number

A generator that generates both non-deterministic random numbers and deterministic random numbers

43 / 50

Which algorithm is used in subtract_with_carry_engine?

Fibonacci generator

Either the Mersenne Twister algorithm or Lagged fibonacci generator algorithm

Mersenne Twister algorithm

Lagged fibonacci generator algorithm

44 / 50

What is Pseudo-random number engines?

Uses user input for random number generation

Uses initial seed based algorithm to generate random numbers

Uses an algorithm that does not require any initial seed to generate random numbers

Random number generates depends on the program

45 / 50

What are the tuples in C++?

Objects that can hold more than one element of the same types

Objects that can hold a single element of fundamental type

Objects that can hold a single element of complex type

Objects that can hold more than one element of different types

46 / 50

What is the use of is_heap_until() function?

Returns the iterator of the last element of the sequence always

Returns the iterator to the position from where the sequence is a heap

Returns the iterator of the position till that the sequence is a heap

Returns the iterator of the first element of the sequence

47 / 50

Which of the following function is used to initialize a tuple?

make_tuple()

make_Tuple()

make()

make_pair()

48 / 50

1. What is random_device?

A pseudo-random number generator

Time-dependent random number generator

Simple random number generator

A true random number generator

49 / 50

What is the use of is_same() function in C++?

To check whether two variables have the same characteristics

To check whether two variables are different or not

To check if two variable is of array type or not

To check if a variable is array type or not

50 / 50

What is the use of get() function in tuples?

To access an element of a tuple

To print an element of a tuple

To delete an element

To check whether the element of the tuple is empty

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