Class Hierarchies, Library & Containers Quiz 5

1 / 50

What is the use of log() function in a complex?

To calculate the log of a complex number

To calculate the log of the argument of a complex number

To calculate the log of rethe al part of a complex number

To calculate the log of the imaginary part of a complex number

2 / 50

Which operator is used to take OR of two bitset variables?

3 / 50

Which function is used to get the real part of the complex number?

imag_p()

real_p()

img_p()

real()

4 / 50

Which word is used to stop the unpacking of a value in a tuple?

stop

cancel

ignore

remain

5 / 50

Which header file is required for using Valarray?

<stl>

<array>

6 / 50

What happens when only one argument is supplied to reset() function?

Bit corresponding to an argument is set to 0

All alternate bits are set to 0 in a bitset

First bit is set to 0

All bits are set to 0 in a bitset

7 / 50

What is the use of the set() function in bitset?

Used to make all bits zero

Used to set bit(s) in a bitset

Used to make a bit 0 in a bitset

Used to make alternate bits zero

8 / 50

Which of the following is corect way of constructing bitset using binary string?

bitset<size> b(float(12));

bitset<size> b(12);

bitset<size> b(string(?1100?));

bitset<size> b;

9 / 50

What is the use of the flip function in bitset?

Used to flip a bit in a bitset

Used to flip all bits to 1

Used to flip bit(s) in a bitset

Used to flip alternate bits

10 / 50

What happens when only one argument is supplied to set() function?

First bit is set to 1

All bits are set to 1 in a bitset

Bit corresponding to an argument is set to 1

All alternate bits are set to 1 in a bitset

11 / 50

Which operator is used as not operator in bitset?

12 / 50

What happens when no argument is supplied to set() function?

All alternate bits are set to 1 in a bitset

All bits are set to 1 in a bitset

All bits are set to 0 in a bitset

First bit is set to 1

13 / 50

What is Valarray in C++?

Container for efficient printing of the array

Container for efficient type conversion of array

Container for efficient value conversion of array

Container for efficient operations on an array

14 / 50

Which of the following is correct about Valarray?

Harder to use

Can have only integer Valarrays

Supports element-wise mathematical operations

Slower than a normal array

15 / 50

Which function is used to calculate the conjugate of a complex number?

conj()

reverse()

opp()

find_conj()

16 / 50

How many variants of tie() function is there?

17 / 50

How many ways are there for constructing a bitset?

18 / 50

Which header file is required to use complex class in your program?

<math>

<complex_math>

19 / 50

What is bitset in C++?

Vector of bools

C-like arrays of bool elements

Template class

An array of bools consuming one bit per element

20 / 50

What is the use of polar function?

Used to construct a complex number from argument and phase angle

Used to construct a complex number from the real and imaginary part

Used to construct a complex number from magnitude and phase angle

Used to construct a complex number from the magnitude and real part

21 / 50

Which function is used to swap two Valarray?

max()

min()

change()

swap()

22 / 50

What is the function of shift()?

Applies the manipulation provided to all the elements of the array

Returns new array after shifting elements by the given number

Returns new array after circular shifting elements by the given number

Returns the summation of all elements of Valarray

23 / 50

Which of the following is correct about none() function in bitset?

Returns true if all bits is set 0

Returns true if any bits is set 1

Returns true if the number of 1?s equal to the number of 0?s

Returns true only if all bits are 1

24 / 50

Which operator is used to access the nth bit in a bitset?

[]

25 / 50

What happens when only one argument is supplied to flip() function?

Bit corresponding to argument bit is flipped

First bit is flipped

All bits are flipped in a bitset

All alternate bits are flipped in a bitset

26 / 50

What happens when no argument is supplied to flip() function?

All bits are flipped in a bitset

All bits are flipped to 1 in a bitset

First bit is flipped

All alternate bits are flipped in a bitset

27 / 50

Indexing of bitset variables starts from ___________

rightmost bit

leftmost bit

same as in an array

front

28 / 50

What is the use of reset function in bitset?

Used to make all bits 1

Used to make a bit(s) 0 in a bitset

Used to make alternate bits zero

Used to make a bit 0 in a bitset

29 / 50

Which of the following is correct about the shift?

Shifts the elements towards the right if the argument supplied is negative

Shifts the elements towards left if the argument supplied is positive

Returns new array after shifting elements by the given number

All of the mentioned

30 / 50

What happens when no argument is supplied to reset() function?

All alternate bits are set to 0 in a bitset

First bit is set to 0

All bits are set to 0 in a bitset

All bits are set to 1 in a bitset

31 / 50

Which of the following is the limitation of bitset over vector bool?

Type

Speed

Space

Size

32 / 50

Which header file is required for using bitset in your program?

<bit>

<bits>

33 / 50

Which function is used to get the argument of a complex number?

norm()

arg()

abs()

argu()

34 / 50

Which of the following is correct about bitset and vector of bools?

Number of elements in bitset should be known at compile time whereas vector can have a dynamic size

Space consumed by bitset is less than vector<bool>

All of the mentioned

Bitset consume only 1 bit per element

35 / 50

What is the class relationship?

A relationship between classes that tells which parts of a class is visible to other classes

A relationship between classes that tells how they are related

A relationship between classes that tells how much power one class has over other class

All of the mentioned

36 / 50

What is the use of sum() function in Valarray?

Returns new array after shifting elements by the given number

Returns new array after circular shifting elements by the given number

Returns the summation of all elements of Valarray

Applies the manipulation provided to all the elements of the array

37 / 50

Which function is used to get the imaginary part of the complex number?

imag_p()

real_p()

imag()

real()

38 / 50

What is the use of count() function in bitset?

To count the number of 0?s

To count the number of total bits in a bitset

To count the number of 1?s

To count the number of low bits

39 / 50

What does size() function returns?

To count the number of total bits used by bitset variable

To count the number of 1?s

To count the number of low bits

To count the number of 0?s

40 / 50

Which operator is used to take AND of two bitset variables?

41 / 50

Which is the correct syntax of constructing a bitset?

all of the mentioned

bitset<size> b(string(?1100?));

bitset<size> b(12);

bitset<size> b;

42 / 50

What is the use of tuple_cat() function?

Concatenates two tuples

Removes elements of the second tuple from first

Takes the union of two tuples

Takes the intersection of two tuples

43 / 50

Which of the following is correct about any() function in bitset?

Returns true if any bit is set 0

Returns true if any bit is set 1

Returns true only if all bits are 1

Returns true if the number of 1?s equal to the number of 0?s

44 / 50

What is the default value of a bitset?

Rightmost bit is 0

All bits are 0

All bits are 1

Leftmost bit is 0

45 / 50

Which function is used to get the absolute of a complex number?

mod()

ret()

norm()

abs()

46 / 50

What is the use of apply() function in Valarray?

Returns new array after shifting elements by the given number

Returns the summation of all elements of the Valarray

Applies the manipulation provided to all the elements of the array

Returns new array after circular shifting elements by the given number

47 / 50

Which of the following is the correct syntax of declaring a complex number?

Complex<type> variable_name;

complex<type> variable_name;

Complex variable_name<type>;

complex variable_name<type>;

48 / 50

Which function is used to print the maximum element from Valarray?

min()

swap()

max()

change()

49 / 50

What is the use of proj() function?

Used to calculate the conjugate of a complex number

Used to calculate the argument of a complex number

Used to calculate the projection of a complex number

Used to calculate the negative of a complex number

50 / 50

Which of the following is corect way of constructing bitset using integer number?

bitset<size> b;

bitset<size> b(string(?1100?));

bitset<size> b(12);

bitset<size> b(float(12));

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