Cpp Programming Set 4 MCQs

Q1 | While overloading binary operators using member function, it requires ___ argument/s.

Zero

One

Two

Three

Q2 | Where the default value of parameter have to be specified?

Function call

Function definition

Function prototype

Both B or C

Q3 | For automatic objects, constructors and destructors are called each time the objects

enter and leave scope

inherit parent class

are constructed

are destroyed

Q4 | Which operation is used as Logical 'AND'

Operator-&

Operator-

Operator-&&

Operator +

Q5 | When an ADT is implemented as a C++ class, which of the following should normally betrue?

Member functions are private, member variables are public

Member functions are public, member variables are private

Member functions as well as member variables are private

Member functions as well as member variables are public

Q6 | Variable that are listed in function's calls are called

Actual parameter

Declared parameter

Passed parameter

None

Q7 | What kind of error can arise when there is a problem with memory?

Segmentation fault

Produce an error

Both Segmentation fault & Produce an error

None of the mentioned

Q8 | Which operations don’t throw anything?

Operations which are reversible

Operations which are irreversible

Operations which are static

Operations which are dynamic

Q9 | What operation can be performed by destructor?

Abort the program

Resource cleanup

Exit from the current block

None of the mentioned

Q10 | Which interface in the container is required for storage management?

Memory management

Allocator interface

Memory interface

None of the mentioned

Q11 | How can the member functions in the container be accessed?

Iterator

Indirect

Both Iterator & Indirect

None of the mentioned

Q12 | In which type of storage location are the vector members stored?

Contiguous storage locations

Non-contiguous storage locations

Contiguous & Non-contiguous storage locations

None of the mentioned

Q13 | What do container adapter provide to interface?

Restricted interface

More interface

No interface

None

Q14 | What does the sequence adaptor provide?

Insertion

Deletion

Interface to sequence container

None

Q15 | Which operators is part of RTTI?

dynamic_cast()

typeid

Both dynamic_cast() & typeid

None

Q16 | At which time does the static_cast can be applied?

Compile-time construct

Runtime construct

Both Compile-time & Runtime construct

None

Q17 | Which function is used to position back from the end of file object?

seekg

seekp

both seekg & seekp

None

Q18 | String class have a concat() function that is used to _____________________

Replace old string by new string

Add two strings

Append one string at end of another string

Remove a string from end of one string

Q19 | Which among the following is/are type(s) of this pointer?

const

volatile

const or volatile

int

Q20 | Which is the pointer which denotes the object calling the member function?

Variable pointer

This pointer

Null pointer

Zero pointer

Q21 | Which property is shown most when upcasting is used?

Code reusability

Code efficiency

Complex code simple syntax

Encapsulation

Q22 | If multiple inheritance is implemented, which upcasting will be correct?

Upcast to first base class listed in inheritance

Upcast to any base class

Upcast to send base class listed in inheritance

Upcast is not possible

Q23 | When are the pointer types known for upcasting the objects?

Compile time

Runtime

Source code build time

Doesn’t apply to pointer types

Q24 | Which among the following is a mandatory condition for downcasting?

It must not be done explicitly

It must be done implicitly

It must be done explicitly

It can’t be done explicitly

Q25 | Which container provides random access iterators?

vector

deque

sort

both vector & deque