Basics Concepts of C++ Quiz 1

1 / 50

What are the escape sequences?

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 are avoided in cout statements

Set of characters that convey special meaning in a program

2 / 50

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

Protected

Both private and protected

Public

Private

3 / 50

Which of the following is correct in C++?

Structures can have member functions

Class members are public by default

Structure members are private by default

Classes cannot have protected data members

4 / 50

Which of the following is a static polymorphism mechanism?

Function overloading

All of the mentioned

Operator overloading

Templates

5 / 50

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

6 / 50

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

/* comment */

// comment */

both // comment or /* comment */

// comment

7 / 50

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

Abstraction

Polymorphism

Modularity

Encapsulation

8 / 50

Which of the following is called address operator?

9 / 50

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

#include [userdefined]

#include <userdefined>

#include <userdefined.h>

#include ?userdefined?

10 / 50

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

Friend class

Virtual class

Abstract class

Singleton class

11 / 50

Which operator is overloaded for a cout object?

12 / 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

13 / 50

What are the actual parameters in C++?

Variables other than passed parameters in a function

Variables that are never used in the function

Parameters which are used in the definition of a function

Parameters with which functions are called

14 / 50

What are the formal parameters in C++?

Parameters with which functions are called

Parameters which are used in the definition of the function

Variables other than passed parameters in a function

Variables that are never used in the function

15 / 50

Which of the following is correct?

C++ allows dynamic type checking.

C++ allows both static and dynamic type checking

C++ allows static type checking

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

16 / 50

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

Using Inheritance

Using Virtual functions

Using Inheritance and Virtual functions

Using Templates

17 / 50

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

cout.put(ch)

cout.putline(ch)

printf(ch)

write(ch)

18 / 50

Which of the following escape sequence represents carriage return?

19 / 50

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

Using Inheritance and Virtual functions

Using Templates

Using Inheritance

Using Virtual functions

20 / 50

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

Virtual function

Static function

Constant function

Friend function

21 / 50

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

It reduces maintenance cost

It reduced both testing and maintenance time

It reduces the testing time

It decreases the compilation time

22 / 50

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

Composition

Abstraction

Encapsulation

Inheritance

23 / 50

Which of the following is correct?

Friend functions can access private members of a class

Friend functions can access public members of a class

Friend functions can access protected members of a class

All of the mentioned

24 / 50

Which concept allows you to reuse the written code?

Encapsulation

Inheritance

Abstraction

Polymorphism

25 / 50

Which of the following is an abstract data type?

string

int

class

float

26 / 50

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

Encapsulated

Reprehensible

Extensible

Overloaded

27 / 50

C++ is ______________

procedural programming language

functional programming language

object oriented programming language

both procedural and object oriented programming language

28 / 50

What does modularity mean?

Hiding part of program

Overriding parts of program

Wrapping things into single unit

Subdividing program into small independent parts

29 / 50

How access specifiers in Class helps in Abstraction?

They allows us to show only required things to outer world

They does not helps in any way

They help in keeping things together

Abstraction concept is not used in classes

30 / 50

Which of the following shows multiple inheritances?

B->A

A->B->C

A,B->C

A->B; A->C

31 / 50

Who created C++?

Bjarne Stroustrup

Dennis Ritchie

Brian Kernighan

Ken Thompson

32 / 50

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

Right-left

Top-down

Bottom-up

Left-right

33 / 50

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

7var_name

VAR_1234

$var_name

7VARNAME

34 / 50

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

Dynamic typing

Dynamic binding

Dynamic loading

Data hiding

35 / 50

Which of the following is correct?

Derived class pointer object cannot point to a base class object

A base class cannot have pointer objects

A derived class cannot have pointer objects

Base class pointer object cannot point to a derived class object

36 / 50

Why references are different from pointers?

A reference cannot be changed once initialized

All of the mentioned

No extra operator is needed for dereferencing of a reference

A reference cannot be made null

37 / 50

What does polymorphism in OOPs mean?

Concept of hiding data

Concept of allowing overiding of functions

Concept of keeping things in differnt modules/files

Concept of wrapping things into a single unit

38 / 50

Which of the following is not a type of inheritance?

Multiple

Distributive

Multilevel

Hierarchical

39 / 50

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

Destructors

Member functions

Constructors

Class

40 / 50

Which of the following cannot be a friend?

Operator function

Function

Class

Object

41 / 50

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

42 / 50

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

43 / 50

Which of the following explains the overloading of functions?

Ad-hoc polymorphism

Virtual polymorphism

Transient polymorphism

Pseudo polymorphism

44 / 50

Which of the following is not a type of Constructor?

Copy constructor

Friend constructor

Parameterized constructor

Default constructor

45 / 50

1. Which of the following escape sequence represents tab?

46 / 50

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

read(ch)

scanf(ch)

cin.get(ch)

getline(ch)

47 / 50

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

Member functions

Member variables

Class variables

Class functions

48 / 50

Which concept is used to implement late binding?

Operator functions

Constant functions

Virtual functions

Static functions

49 / 50

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

By declaring a virtual function in a class

By using an abstract keyword in front of a class declaration

By declaring a pure virtual function in a class

By using virtual keyword in front of a class declaration

50 / 50

How structures and classes in C++ differ?

Structures cannot have private members whereas classes can have

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

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

Structures by default hide every member whereas classes do not

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