Multilevel Inheritance

#include<iostream.h>

#include<conio.h>

class mul

{

public :

int a;

void getdata()

{

cout<<"\n\nEnter first Number :::\t";

cin>>a;

}

void putdata()

{

cout<<"\nFirst Number Is :::\t"<<a;

}};

class sqr :public mul

{

public:

int b;

void square()

{

getdata();

b=a*a;

cout<<"\n\nSquare Is :::"<<b;

}

};

class cu :public sqr    {

public:

int c;

void cube()

{

square();

c=b*a;

cout<<"\n\nCube :::\t"<<c;

}};

int main()

{

clrscr();

cu d;

d.cube();

getch();

}