Differentiate between public and protected visibility in context of Object Oriented Programming giving suitable examples for each.

Discuss various reasons that support the concept of inheritance in Object Oriented Languages.

What is inheritance? Discuss its various forms.

Consider the following and answer the questions give below: class MNC

{

char Cname[25];  //Compay 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

char Ctry[25];  //Country

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 declaration of an object of class Outlet?

(ii) How many bytes does a object belonging to class Outlet require?

(iii) Name the member function(s), which are accessed from the object(s) of class Outlet.

(iv) Name the data member(s), which are accessible from the object(s) of class Branch.

When does ambiguity arise in multiple inheritance? How can one resolve it? What are virtual base classes? What is their significance?

Discuss a situation in which the private derivation will be more appropriate as compared to public derivation

What will be the output of the following program? 

#include<iostream.h>

class Student

{

public:

Student (char pname[]=” “)

{

strcpy(name,pname);

average=semesterHours=0;

}

void addCourse(int hours,float grade)

{

average=(semesterHours*average+grade); semesterHours+=hours;

average=semesterHours;

}

int hours()

{ return semesterHours; }

float gpa()

{ return average;

}

protected:

char name[40];

int semesterHours;

float average;

};

class GradStudent:public Student

{

public:

GradStudent(char pname[]=” “):Student(pname)

{ qual_grade=0;

}

int qualifier()

{ return qual_grade; }

protected:

int qual_grade;

};

int main() { Student commerce(“Saurabh 7/.”); 

GradStudent gs;

commerce.addCourse(4,2.5);

gs.addCourse(4,3.0);

return 0;

}

Write a C++ to read and display information about employees and managers. Employee is a class that contains employee number, name, address ad department. Manager class contains all information of the employee class and a list of employees working under a manager. 

Create the following class hierarchy in C⁺⁺.

Answer the questions (i) to (iv) based on the following: 

class FaceToFace

{

char CenterCode[10];

public:

void Input( );void Output( );

};

class Online

{

char website[50];

public:

void SiteIn( ); 

void SiteOut( );

};

class Training: public FaceToFace, private online

{ 

long Tcode; 

loat charge;

int period;

public:

void Register( );

void show( );

};

(i) Which type of inheritance is shown in the above example?

(ii) Write names of all the member functions accessible from Show( ) function of class Training.

(iii) Write name of all the member accessible through an object of class Training.

(iv) Is the function Output( ) accessible inside the function SiteOut( )? Justify your answer?