Algorithms, Objects & Iterators in C++ Quiz 2

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How many parameters are required for sort_heap function?

2 or 3

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What is the use of includes function in c++?

Compares two sorted ranges of data

Includes a new element in the range

Compares two ranges of data

Includes a new element in the end

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Which function can be used to find the sum of a vector container?

accumulate()

calcsum()

findsum()

checksum()

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Pick the correct statement.

Input iterator moves sequentially forward

Input iterator moves sequentially backward

Input iterator moves sequentially downwards

Input iterator moves in both direction

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What is the property of stable sort function provided by the STL algorithm?

sorts the elements of a sequence in descending order preserving the relative order of equivalent elements

same as sort function of STL algorithm

arranges the sequence randomly preserving the relative order of equivalent elements

sorts the elements of a sequence in ascending order preserving the relative order of equivalent elements

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How many types of sequence operations are provided by the C++ algorithm STL?

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Which header file is required to use accumulate() function?

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What kind of pattern is iterator pattern?

Star pattern

Design pattern

Adapter pattern

Sequence pattern

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Which of the following is correct about Functors?

Overloaded operator () function is not a member of the class

Functors should be declared global

Functors have a state

Functors should not be declared outside the main function

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Which of the following is a Non-modifying Sequence Operation?

swap()

transform()

remove()

search()

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Which of the following is an arithmetic unary functor?

logical_and<T> f;

negate<T> f;

logical_not<T> f;

logical_or<T> f;

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Which of te following is a built-in example of functors in C++?

mltiplication<T> f(a1, a2);

add<T> f(a1, a2);

plus<T> f(a1, a2);

subtract<T> f(a1, a2);

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How many adaptors support the checked iterators?

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What are functors in C++?

Objects that are used to call the function of other classes

Functions that are called using pointer objects

Objects of a class which are treated as functions

Functions that are called only once in a program

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Which header file is used to manipulate the allocater?

object

memory

allocater

iterator

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How many categories of iterators are there in c++?

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1. What is the property of partial sort function provided by the STL algorithm?

sorts the elements before the middle element in ascending order and remaining elements are left without any specific order

sorts the elements after the middle element in ascending order and remaining elements are left without any specific order

sorts the elements after the middle element in descending order and remaining elements are left without any specific order

sorts the elements before the middle element in descending order and remaining elements are left without any specific order

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Which function is used increment the iterator by a particular value?

move()

prev()

next()

advance()

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Which of the following is a logical unary functor?

logical_and<T> f;

negate<T> f;

logical_not<T> f;

logical_or<T> f;

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What are Bi-directional iterators?

Iterator same as Forward Iterator

Iterator that can only be used to access the sequence from both sides

Forward Iterator that can be used in both directions

Iterator that can only be used to assign the sequence from both sides

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Which of the following is an advantage of Forward iterator over input and output iterator?

Can be used with arithmetic operators also

Can be used with relational operators also

Can be used as both accessing and assigning iterator

Forward iterator can be incremented or decremented

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In which type of semantics does c++ implements iterator?

Size

Value

Pointer

Memory

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How many types of Iterators are there?

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What is the use of reference member type in allocator?

Sequence of an element

Point to an element

Quantities of element

Reference to an element

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What are binary functors?

Functors that accepts two parameters

Functors that accepts other than a specific type of parameter

Functors that accepts more than one parameters

Functors that accepts only one parameter

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Which operator is used to allocate the memory?

free

new

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Which operator is used to deallocate the memory?

insert

free

destroy

empty

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What will happen if the iterator is unchecked?

Nothing will execute

Arising of compiler warnings & Unchecked behavior on program

Unchecked behavior on program

Arising of compiler warnings

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Which of the following is correct about Input Iterators?

Can only be incremented

They cannot be decremented

All of the mentioned

Cannot be used in multi-pass algorithms

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What is the use of random_shuffle() function of STL algorithm?

To generate a sequence in a given range and arrange them in random order

To generate the random sequence in a range

To select any random number from the given sequence.

To rearrange given sequence randomly

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What is the use of checked iterators?

Not allow you to overwrite the bounds of your container

Overwrite the bounds of your container

Overwrite the bounds of your iterators

It will check the list value

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What is the correct function prototype of () operator overloading?

return_type operator()(arguments);

return_type operator(Class_name)(arguments);

return_type operator(arguments);

return_type operator(arguments)();

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How many ways are there to use functors?

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What are unary functors?

Functors that accepts only one parameter

Functors that accepts more than one parameters

Functors that accepts two parameters

Functors that accepts other than a specific type of parameter

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Which of the header file is used to implement algorithms provided by C++ STL?

<algos>

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Which of the following is correct about Input Iterators?

No value can be assigned to the location pointed by Input Iterator

Input iterators can be used with all relational operators

Input iterators can work with sequence operators

Input iterators can work with arithmetic operators

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Which of the following is a Modifying Sequence Operation?

equal()

all_of()

any_of()

swap()

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What kind of errors do checked iterators detect?

Uninitialized iterators

Range access

Both Uninitialized iterators and range access

Initialized iterators

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Which of the following operators are overloaded for functors?

[]

()

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What is the correct syntax for declaring an allocator?

template class()

template < class T > class allocator;

template class allocator;

template < class T > class;

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Which of the following is correct?

Input Iterators are used for assigning

Output Iterators are used for assigning

Both Input and Output Iterators are used for accessing

Both Input and Output Iterators are used for assigning

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Which of the following header file is required to use in-bulit functors of C++?

<any>

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What are Iterators?

STL component used to call functions efficiently

STL component used to define template classes

STL component used for vectors

STL component used to point a memory address of a container

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Which of the following can serve as random-access iterator?

Class pointer

Memory pointer

Object pointer

Memory & Class pointer

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What does the checked iterator allow you to find?

Compile time error

Warnings & Run time error

Run time error

Warnings

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What are Random-access Iterators?

Iterators that can be used to access elements at an arbitrary offset position

Same as Bi-directional iterator

Input iterator with the additional property of random access

Output iterator with the additional property of random access

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Where are allocators implemented?

C++ code library

String library

Template library

Standard library

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