Basics Concepts of C++ Quiz 1

1 / 50

Who created C++?

Dennis Ritchie

Ken Thompson

Bjarne Stroustrup

Brian Kernighan

2 / 50

Which of the following is correct?

A derived class cannot have pointer objects

A base class cannot have pointer objects

Base class pointer object cannot point to a derived class object

Derived class pointer object cannot point to a base class object

3 / 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 destructor

It will not have a constructor

4 / 50

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

scanf(ch)

cin.get(ch)

read(ch)

getline(ch)

5 / 50

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

Encapsulation

Abstraction

Inheritance

Composition

6 / 50

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

both // comment or /* comment */

// comment

// comment */

/* comment */

7 / 50

What does polymorphism in OOPs mean?

Concept of allowing overiding of functions

Concept of hiding data

Concept of wrapping things into a single unit

Concept of keeping things in differnt modules/files

8 / 50

Which of the following shows multiple inheritances?

A,B->C

A->B; A->C

A->B->C

B->A

9 / 50

What are the formal parameters in C++?

Parameters which are used in the definition of the function

Variables other than passed parameters in a function

Parameters with which functions are called

Variables that are never used in the function

10 / 50

Which of the following is correct?

All of the mentioned

Friend functions can access public members of a class

Friend functions can access private members of a class

Friend functions can access protected members of a class

11 / 50

1. Which of the following escape sequence represents tab?

12 / 50

Which of the following is called address operator?

13 / 50

Which of the following is an abstract data type?

int

class

string

float

14 / 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 declaring a virtual function in a class

By using an abstract keyword in front of a class declaration

15 / 50

Which of the following cannot be a friend?

Function

Operator function

Object

Class

16 / 50

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

Polymorphism

Abstraction

Encapsulation

Modularity

17 / 50

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

Member functions

Class functions

Class variables

Member variables

18 / 50

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

Data hiding

Dynamic typing

Dynamic binding

Dynamic loading

19 / 50

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

Virtual function

Friend function

Static function

Constant function

20 / 50

Why references are different from pointers?

No extra operator is needed for dereferencing of a reference

All of the mentioned

A reference cannot be made null

A reference cannot be changed once initialized

21 / 50

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

22 / 50

Which operator is overloaded for a cout object?

23 / 50

Which concept allows you to reuse the written code?

Abstraction

Encapsulation

Polymorphism

Inheritance

24 / 50

Which of the following is not a type of inheritance?

Multiple

Distributive

Multilevel

Hierarchical

25 / 50

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

Using Inheritance

Using Templates

Using Virtual functions

Using Inheritance and Virtual functions

26 / 50

Which of the following is correct?

C++ allows dynamic type checking.

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

C++ allows both static and dynamic type checking

C++ allows static type checking

27 / 50

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

Protected

Public

Both private and protected

Private

28 / 50

C++ is ______________

functional programming language

both procedural and object oriented programming language

procedural programming language

object oriented programming language

29 / 50

Which concept is used to implement late binding?

Operator functions

Constant functions

Static functions

Virtual functions

30 / 50

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

7var_name

7VARNAME

$var_name

VAR_1234

31 / 50

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

32 / 50

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

Destructors

Class

Member functions

Constructors

33 / 50

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

Right-left

Top-down

Bottom-up

Left-right

34 / 50

How access specifiers in Class helps in Abstraction?

They does not helps in any way

Abstraction concept is not used in classes

They help in keeping things together

They allows us to show only required things to outer world

35 / 50

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

Singleton class

Friend class

Abstract class

Virtual class

36 / 50

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

#include <userdefined.h>

#include ?userdefined?

#include [userdefined]

#include <userdefined>

37 / 50

Which of the following is a static polymorphism mechanism?

Operator overloading

All of the mentioned

Function overloading

Templates

38 / 50

Which of the following is correct in C++?

Class members are public by default

Structure members are private by default

Structures can have member functions

Classes cannot have protected data members

39 / 50

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

Encapsulated

Reprehensible

Overloaded

Extensible

40 / 50

What are the actual parameters in C++?

Parameters which are used in the definition of a function

Parameters with which functions are called

Variables that are never used in the function

Variables other than passed parameters in a function

41 / 50

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

write(ch)

cout.put(ch)

printf(ch)

cout.putline(ch)

42 / 50

Which of the following escape sequence represents carriage return?

43 / 50

Which of the following is not a type of Constructor?

Default constructor

Copy constructor

Parameterized constructor

Friend constructor

44 / 50

How structures and classes in C++ differ?

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

Structures cannot have private members whereas classes can have

Structures by default hide every member whereas classes do not

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

45 / 50

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

46 / 50

Which of the following explains the overloading of functions?

Pseudo polymorphism

Virtual polymorphism

Transient polymorphism

Ad-hoc polymorphism

47 / 50

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

It decreases the compilation time

It reduced both testing and maintenance time

It reduces the testing time

It reduces maintenance cost

48 / 50

What does modularity mean?

Hiding part of program

Wrapping things into single unit

Subdividing program into small independent parts

Overriding parts of program

49 / 50

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

Using Inheritance and Virtual functions

Using Virtual functions

Using Inheritance

Using Templates

50 / 50

What are the escape sequences?

Set of characters that are avoided in cout statements

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

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

Set of characters that convey special meaning in a program

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