Program of virtual base class

#include<iostream.h>

#include<conio.h>

class employee

{

protected:

int emp_code;

public:

employee();

void display();

};

class faculty:public virtual employee

{

protected:

char sub[10];

public:

faculty();

void display();

};

class lab_staff:public virtual employee

{

protected:

float lb;

public:

lab_staff();

void display();

};

class instructor:public faculty,public lab_staff

{

public:

instructor();

void display();

};

void main()

{

instructor inst1;

inst1.display();

getch();

}

void employee::employee()

{

cout<<"start"<<endl;

cin>>emp_code;

}

void employee::display()

{

cout<<"emp_code is"<<emp_code;

}

void faculty::faculty()

{

cin>>sub;

}

void faculty::display()

{

employee::display();

}

void lab_staff::lab_staff()

{

cin>>lb;

}

void lab_staff::display()

{

employee::display();

}

void instructor::instructor()

{

}

void instructor::display()

{cout<<emp_code;

cout<<sub;

cout<<lb;

}