Basics Concepts of C++ Quiz 1

1 / 50

What are the formal parameters in C++?

Variables other than passed parameters in a function

Parameters with which functions are called

Parameters which are used in the definition of the function

Variables that are never used in the function

2 / 50

Which concept allows you to reuse the written code?

Abstraction

Inheritance

Encapsulation

Polymorphism

3 / 50

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

getline(ch)

read(ch)

cin.get(ch)

scanf(ch)

4 / 50

What are the actual parameters in C++?

Parameters with which functions are called

Parameters which are used in the definition of a function

Variables other than passed parameters in a function

Variables that are never used in the function

5 / 50

What does polymorphism in OOPs mean?

Concept of wrapping things into a single unit

Concept of hiding data

Concept of allowing overiding of functions

Concept of keeping things in differnt modules/files

6 / 50

1. Which of the following escape sequence represents tab?

7 / 50

Why references are different from pointers?

All of the mentioned

No extra operator is needed for dereferencing of a reference

A reference cannot be made null

A reference cannot be changed once initialized

8 / 50

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

Data hiding

Dynamic binding

Dynamic typing

Dynamic loading

9 / 50

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

7var_name

$var_name

VAR_1234

7VARNAME

10 / 50

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

write(ch)

printf(ch)

cout.putline(ch)

cout.put(ch)

11 / 50

Which of the following is correct in C++?

Classes cannot have protected data members

Structure members are private by default

Class members are public by default

Structures can have member functions

12 / 50

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

Abstraction

Encapsulation

Modularity

Polymorphism

13 / 50

How access specifiers in Class helps in Abstraction?

They help in keeping things together

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

14 / 50

Which of the following is a static polymorphism mechanism?

Templates

Operator overloading

All of the mentioned

Function overloading

15 / 50

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

16 / 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

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

Structures cannot have private members whereas classes can have

17 / 50

Which of the following is called address operator?

18 / 50

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

Virtual function

Static function

Friend function

Constant function

19 / 50

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

Inheritance

Encapsulation

Abstraction

Composition

20 / 50

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

It reduces the testing time

It reduces maintenance cost

It reduced both testing and maintenance time

It decreases the compilation time

21 / 50

Which of the following is an abstract data type?

string

class

float

int

22 / 50

Which of the following explains the overloading of functions?

Virtual polymorphism

Ad-hoc polymorphism

Pseudo polymorphism

Transient polymorphism

23 / 50

Which of the following cannot be a friend?

Operator function

Object

Function

Class

24 / 50

What happens if a class does not have a name?

It is not allowed

It will not have a constructor

It will neither have a constructor or destructor

It will not have a destructor

25 / 50

Which of the following is correct?

Friend functions can access private members of a class

Friend functions can access protected members of a class

All of the mentioned

Friend functions can access public members of a class

26 / 50

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

27 / 50

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

Friend class

Abstract class

Singleton class

Virtual class

28 / 50

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

Extensible

Reprehensible

Overloaded

Encapsulated

29 / 50

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

Top-down

Right-left

Bottom-up

Left-right

30 / 50

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

Using Virtual functions

Using Inheritance and Virtual functions

Using Inheritance

Using Templates

31 / 50

Which of the following is correct?

C++ allows both static and dynamic type checking

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

C++ allows static type checking

C++ allows dynamic type checking.

32 / 50

Which of the following is not a type of inheritance?

Multilevel

Distributive

Hierarchical

Multiple

33 / 50

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

Both private and protected

Private

Protected

Public

34 / 50

C++ is ______________

both procedural and object oriented programming language

procedural programming language

object oriented programming language

functional programming language

35 / 50

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

By declaring a virtual function in a class

By declaring a pure virtual function in a class

By using an abstract keyword in front of a class declaration

By using virtual keyword in front of a class declaration

36 / 50

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

Using Inheritance

Using Inheritance and Virtual functions

Using Virtual functions

Using Templates

37 / 50

Which of the following is not a type of Constructor?

Friend constructor

Parameterized constructor

Copy constructor

Default constructor

38 / 50

Who created C++?

Brian Kernighan

Dennis Ritchie

Ken Thompson

Bjarne Stroustrup

39 / 50

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

// comment

/* comment */

// comment */

both // comment or /* comment */

40 / 50

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

41 / 50

Which operator is overloaded for a cout object?

42 / 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]

43 / 50

Which of the following shows multiple inheritances?

A->B; A->C

A->B->C

A,B->C

B->A

44 / 50

What are the escape sequences?

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

Set of characters that are avoided in cout statements

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

45 / 50

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

Member functions

Class functions

Class variables

Member variables

46 / 50

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

Class

Destructors

Member functions

Constructors

47 / 50

Which of the following escape sequence represents carriage return?

48 / 50

Which of the following is correct?

A derived class cannot have pointer objects

Derived class pointer object cannot point to a base class object

A base class cannot have pointer objects

Base class pointer object cannot point to a derived class object

49 / 50

Which concept is used to implement late binding?

Virtual functions

Operator functions

Constant functions

Static functions

50 / 50

What does modularity mean?

Hiding part of program

Wrapping things into single unit

Subdividing program into small independent parts

Overriding parts of program

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