Basics Concepts of C++ Quiz 1

1 / 50

Which of the following class allows to declare only one object of it?

Abstract class

Singleton class

Friend class

Virtual class

2 / 50

Which of the following explains the overloading of functions?

Pseudo polymorphism

Ad-hoc polymorphism

Transient polymorphism

Virtual polymorphism

3 / 50

Which of the following escape sequence represents carriage return?

4 / 50

Which of the following supports the concept that reusability is a desirable feature of a language?

It reduced both testing and maintenance time

It decreases the compilation time

It reduces maintenance cost

It reduces the testing time

5 / 50

A language which has the capability to generate new data types are called ________________

Reprehensible

Overloaded

Encapsulated

Extensible

6 / 50

Which of the following is used to make an abstract class?

By declaring a pure virtual function in a class

By using virtual keyword in front of a class declaration

By using an abstract keyword in front of a class declaration

By declaring a virtual function in a class

7 / 50

Which of the following shows multiple inheritances?

A,B->C

B->A

A->B; A->C

A->B->C

8 / 50

Out of the following, which is not a member of the class?

Static function

Virtual function

Constant function

Friend function

9 / 50

Which of the following is used for comments in C++?

// comment */

// comment

/* comment */

both // comment or /* comment */

10 / 50

Which of the following is a static polymorphism mechanism?

Operator overloading

All of the mentioned

Function overloading

Templates

11 / 50

Why references are different from pointers?

A reference cannot be changed once initialized

A reference cannot be made null

All of the mentioned

No extra operator is needed for dereferencing of a reference

12 / 50

How run-time polymorphisms are implemented in C++?

Using Inheritance

Using Inheritance and Virtual functions

Using Templates

Using Virtual functions

13 / 50

Which of the following is correct?

All of the mentioned

Friend functions can access private members of a class

Friend functions can access protected members of a class

Friend functions can access public members of a class

14 / 50

C++ is ______________

both procedural and object oriented programming language

functional programming language

object oriented programming language

procedural programming language

15 / 50

Which of the following approach is used by C++?

Right-left

Top-down

Bottom-up

Left-right

16 / 50

Which members are inherited but are not accessible in any case?

Protected

Public

Private

Both private and protected

17 / 50

Which of the following is not a type of inheritance?

Hierarchical

Multiple

Distributive

Multilevel

18 / 50

Which function is used to read a single character from the console in C++?

scanf(ch)

getline(ch)

read(ch)

cin.get(ch)

19 / 50

Which of the following is called address operator?

20 / 50

1. Which of the following escape sequence represents tab?

21 / 50

What are the escape sequences?

Set of characters that are used in the name of the main function of the program

Set of characters that are avoided in cout statements

Set of characters that convey special meaning in a program

Set of characters that whose use are avoided in C++ programs

22 / 50

Which of the following cannot be a friend?

Function

Operator function

Object

Class

23 / 50

Which operator is overloaded for a cout object?

24 / 50

Which of the following cannot be used with the virtual keyword?

Member functions

Destructors

Constructors

Class

25 / 50

Which function is used to write a single character to console in C++?

printf(ch)

write(ch)

cout.putline(ch)

cout.put(ch)

26 / 50

Who created C++?

Ken Thompson

Bjarne Stroustrup

Brian Kernighan

Dennis Ritchie

27 / 50

Which of the following is correct?

C++ allows both static and dynamic type checking

C++ allows dynamic type checking.

C++ allows static member function to be of type const.

C++ allows static type checking

28 / 50

Which of the following is the correct syntax of including a user defined header files in C++?

#include ?userdefined?

#include <userdefined.h>

#include [userdefined]

#include <userdefined>

29 / 50

What does modularity mean?

Hiding part of program

Overriding parts of program

Wrapping things into single unit

Subdividing program into small independent parts

30 / 50

Which concept is used to implement late binding?

Virtual functions

Static functions

Operator functions

Constant functions

31 / 50

Which of the following is called insertion/put to operator?

32 / 50

Which concept allows you to reuse the written code?

Polymorphism

Inheritance

Abstraction

Encapsulation

33 / 50

How many types of polymorphism are there in C++?

34 / 50

Which of the following is not a type of Constructor?

Copy constructor

Friend constructor

Default constructor

Parameterized constructor

35 / 50

What is the other name used for functions inside a class?

Member variables

Class variables

Class functions

Member functions

36 / 50

Which of the following is called extraction/get from operator?

37 / 50

1. How compile-time polymorphisms are implemented in C++?

Using Inheritance

Using Inheritance and Virtual functions

Using Virtual functions

Using Templates

38 / 50

Which of the following is an abstract data type?

int

string

class

float

39 / 50

What does polymorphism in OOPs mean?

Concept of wrapping things into a single unit

Concept of keeping things in differnt modules/files

Concept of allowing overiding of functions

Concept of hiding data

40 / 50

Which of the following is a correct identifier in C++?

7var_name

$var_name

7VARNAME

VAR_1234

41 / 50

Wrapping data and its related functionality into a single entity is known as _____________

Modularity

Polymorphism

Encapsulation

Abstraction

42 / 50

Which of the following provides a programmer with the facility of using object of a class inside other classes?

Inheritance

Composition

Abstraction

Encapsulation

43 / 50

What are the formal parameters in C++?

Variables that are never used in the function

Parameters which are used in the definition of the function

Parameters with which functions are called

Variables other than passed parameters in a function

44 / 50

What are the actual parameters in C++?

Parameters which are used in the definition of a function

Variables other than passed parameters in a function

Parameters with which functions are called

Variables that are never used in the function

45 / 50

Which concept means the addition of new components to a program as it runs?

Dynamic binding

Dynamic typing

Data hiding

Dynamic loading

46 / 50

Which of the following is correct in C++?

Structure members are private by default

Structures can have member functions

Class members are public by default

Classes cannot have protected data members

47 / 50

How structures and classes in C++ differ?

Structures by default hide every member whereas classes do not

In Structures, members are public by default whereas, in Classes, they are private by default

Structures cannot have private members whereas classes can have

In Structures, members are private by default whereas, in Classes, they are public by default

48 / 50

What happens if a class does not have a name?

It is not allowed

It will neither have a constructor or destructor

It will not have a constructor

It will not have a destructor

49 / 50

How access specifiers in Class helps in Abstraction?

They does not helps in any way

They allows us to show only required things to outer world

Abstraction concept is not used in classes

They help in keeping things together

50 / 50

Which of the following is correct?

Derived class pointer object cannot point to a base class object

Base class pointer object cannot point to a derived class object

A derived class cannot have pointer objects

A base class cannot have pointer objects

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