11th Computer Science Monthly Test -2 (Inheritance )

MABS Institution

11th Computer Science Monthly Test -2 (Inheritance )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Which of the following statement is true or false?
(i) When a derived class inherits from many base classes is known as multilevel inheritance
(ii) When many derived classes are created from single base class called multiple inheritance
(iii) The transitive nature of inheritance is multilevel inheritance
(iv) is an example of hierarchical inheritance.

(i) false, (ii) false, (iii) true, (iv) true
(i) true, (ii) false, (iii) true, (iv) true
(i) true, (ii) false, (iii) true, (iv) false
(i) false, (ii) false, (iii) false, (iv) true

When more than one derived clauses are created from a single base class called

Multiple
Multilevel
Hybrid
Hierarchical

The order of inheritance by derived class to inherit the base in the above diagram

left to right
right to left
bottom to top
top to bottom

class vehicle
{ int wheels;
public:
void input_ data(float,float);
void output_data();
protected:
int passenger;
};
class heavy_vehicle : protected vehicle {
int diesel_petrol;
protected:
int load;
protected:
int load;
public:
voidread_data(float,float)
voidwrite_data(); };
class bus: private heavy_vehicle {
charTicket[20] ;
public:
void fetch_data(char);
voiddisplay_data(); };
};
The data member that can be accessed from the function display data()

passenger
load
Ticket
All of these

In multiple inheritance the level of inheritance is extended upto _________

2
3
5
many

When an object of the derived class is created, the compiler first call to the____________.

base class destructor
base class members functions
base class constructor
base class data members
derived class constructor

When classes are inherited with all the visibility modes but derived class cannot access the

private members
protected members
public members
both a and b

If a derived class object is created, which constructor is called first?

Base class constructor
Derived class constructor
Depends on how we call the object
not possible

A class is derived from a class which is a derived class itself, then this is referred to as__________

multiple inheritance
multilevel inheritance
single inheritance
double inheritance

When a derived class inherits from multiple base classes is known as

Multilevel
Multiple
Hierarchical
Hybrid

Part - B

Generic 2 - Answer All Question

Can private members of the base class be accessed by the derived class? If yes, how?

If a base class and a derived class each include a member function with the same name and arguments, which member function will be called by the object of the derived class if the scope resolution operator is not used?

What is the difference between public and private visibility mode?

Why derived class is called power packed class?

Write the syntax of creating derived class.

Write the types of Inheritance for the following statement.
(i) When a derived class inherits from many base classes.
(ii) When more than one derived classes are created from a single base class.
(iii) Multilevel +Multiple Inheritance
(iv) The transitive nature of inheritance
(v) Class student {public: int roll no;};
Class student : public student {public : int marks}; is an example of

When the constructor of base class will automatically invoked?

Part - C

Generic 3 - Answer All Question

What do you mean by overriding?

Can a derived class get access privilege for a private member of the base class? If yes, how?

Write the output of the following program.//Implementation of Single Inheritance using public
visibility mode
#include < iostream >
using namespace std;
class Shape
{
private:
int count;
protected:
int width;
int height;
public:
void setWidth(int w)
{
width=w;
}
void setHeight(int h)
{
height=h;
}
};
class Rectangle: publicShape
{
public:
int getArea()
{
return (width * height);
}
};
int main()
{
Rectangle Rect;
Rect.setWidth( 5);
Rect.setHeight(7);
II Print the area of theobject.
cour<< "Total area: "<< Rect.getArea() << endl;
return ();
}

What is the difference between polymorphism and inheritance though are used for reusability of code?

Write some facts about the execution of constructors and destructors in inheritance.

What are the points to be noted while deriving a new class?

In what situation shadowing base class function inderived class arises? How will you resolve the situation?

Part - D

Generic 5 - Answer All Question

Write the output of the. following program.
#include< iostream >
using namespace std;
class base
{
public:
base( )
{
cout<<"\nConstructor of base class ...";
}
~base( )
{
cout << "\nDestructor of base class .... ";
}
} ;
class derived:public base
{
public:
derived()
{
cout << "\nConstructor of derived ...";
}
~derived( )
{
cout << "\nDestructor of derived ...";
}
};
class derived 1 :public derived
{
public:
derived1( )
{
cout << "n\nConstructor of derivedl ...";
}
~derived 10
{
cout << "\nDestructor of derivedl ...";
}
};
. int main ()
{
derived1 x;
return 0;
}

Answer the questions (i) to (iv) on the following
code:
class Dolls
{
char DCode[5];
protected :
float Price;
void CalcPrice (float);
public:
Dolls ();
void DInput ( ) ;
void DShow ( ); .
};
class SoftDolls : public Dolls
}
char SDName[20];
float Weight;
public:
SoftDolls ( ) ;
void SDInput ( ) ;
void SDShow ( ) ;
};
class ElectronicDolls : public Dolls
}
char EDName [20];
char BatteryType[10];
int Batteries ;
public: .
Electronic Dolls ( );
void EDInput ( ) ;
void EDShow ( ) ;
};
(i) Which type of Inheritance is shown in the above example?
(ii) How many bytes will be rreqiured by an object of the class ElectronicDolls?
(iii) Write name of all the data memebrs accessible from member functions of the class softDolls.
(iv) Write name of all the member functions accessible by· an object of the class ElectronicDolls.

Write the output of the following program.
#include < iostream >
using namespace std;
class Container {
public:
// Constructor definition
Container(double 1 = 2.C, double b = 2.0, double
h= 2.0) { -
cout<<"Constructor called." << endl;
length = 1;
breadth = b;
height = h;
}
double Volume ( ) {
return length * breadth * height;
}
int compare(Container container)
{
return this->Volume( )>Container.volume ( ):
}
private:
double length; // Length of a Container
double breadth; // Breadth of a Container
double height; // Height of a Container
} ;
int main(void) {
Container Container1(3.3, 1.2, 1.5); II Declare
Container!
Container Container2(8.5, 6.0, 2.0); II Declare
Container2
if(Container l.compare(Container2)) {
cout << "Container2 is smaller than Container1"
< } else {
cout << "Container2 is equal to or larger than
Container1' n < }
return 0
}

Consider the following and answer the questions given below:
class MNC
{
char Cname[25] ; //Company name
protected:
char Hoffice[25]; // Head office
public:
MNC( ) ;
char Country [25];
void EnterData ( ) ;
void DisplayData ( ) ;
};
class Branch: public MNC
}
long NOE [Number of employees
\\country char Ctry [25];
protected:
void Association ( ) ;
public:
Branch ( ) ;
void add ( ) ;
void Show ( ) ;
};
class Outlet: public Branch
char State [25];
public:
Outlet ( ) ;
void Enter ( ) ;
void Output ( ) ;
};
(i) Which class constructor will be called first at the time of decla~ation of an object Outlet?
(ii) How many types of on object belonging to class output require?
(iii) Name the number functional which are accessed from the objects of class Outlet.
(iv) Name the data numerical, which are accessible from the object(s) of class Outlet.
Write the output of the following program.
# include < iostream >
class person
{
Public:
string profession;
int age;
Person() Profession ("unemployed"),
age (16) {}
void display ( )
{
cout-<<"My profession is:
"< cout-<< "My age is: "<< age< walk ();
talk ();
}
void walk()
{ cout-<< "I can walk" < }
void talk ()
{cout-<< "I can talk" < }
};
Class Teacher: Public Person
{
Public:
void teachrnaths ( )
{cout-<< "I can teach Maths" < }
};
Class Player: Public Person
{
Public:
void play football ( )
{ cout-<< "I can play football" < }
int main ()
{
Teacher t1;
t1.profession = "Teacher"
t1. age = 24 ;
t1. display ( ) ;
t1. teachmaths( );
Player f1;
f1. profession -= "footballer"
f1. age = 21
f1. display ( ) ;
f1. play football ( ) ;
return 0;
}

(a) Define Multilevel and Multiple inheritance in context of object Oriented Programming Code suitable example to illustrate the same.
(b) Answer the questions (i) to (iii) based on the following code:
class stationery
{
char Type ;
char manufacturer [10] ;
public:
stationery ( );
void Read_Sta_details ();
void Disp_sta_details( ) ;
};
class office: public stationery
}
int no_of types;
float cost_of_sta ;
public:
void Read_off_details( );
void Disp_off details( ) ;
};
class printer: private office
{
int no_of users ;
char delivary_date[10];
public:
void Read_pri _details( );
void Disp_pri _details( ) ;
};
voidmain()
{ printer Myprinter ;
}
(i) Mention the member names which are accessible by MyPrinter declared in main( ) function.
(ii) What is the size of Myprinter in bytes?
(iii) Mention the names of functions accessible from the member function Read yri-details ( ) of class printer.

Explain the different types of inheritance.

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11th Computer Science Monthly Test -2 (Inheritance )

MABS Institution

11th Computer Science Monthly Test -2 (Inheritance )-Aug 2020

Part - A

Multiple Choice Question - Answer All Question

When more than one derived clauses are created from a single base class called

The order of inheritance by derived class to inherit the base in the above diagram

In multiple inheritance the level of inheritance is extended upto _________

When an object of the derived class is created, the compiler first call to the____________.

When classes are inherited with all the visibility modes but derived class cannot access the

If a derived class object is created, which constructor is called first?

A class is derived from a class which is a derived class itself, then this is referred to as__________

When a derived class inherits from multiple base classes is known as

Part - B

Generic 2 - Answer All Question

Can private members of the base class be accessed by the derived class? If yes, how?

If a base class and a derived class each include a member function with the same name and arguments, which member function will be called by the object of the derived class if the scope resolution operator is not used?

What is the difference between public and private visibility mode?

Why derived class is called power packed class?

Write the syntax of creating derived class.

When the constructor of base class will automatically invoked?

Part - C

Generic 3 - Answer All Question

What do you mean by overriding?

Can a derived class get access privilege for a private member of the base class? If yes, how?

What is the difference between polymorphism and inheritance though are used for reusability of code?

Write some facts about the execution of constructors and destructors in inheritance.

What are the points to be noted while deriving a new class?

In what situation shadowing base class function inderived class arises? How will you resolve the situation?

Part - D

Generic 5 - Answer All Question

Explain the different types of inheritance.

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