#include<iostream.h>
#include<conio.h>
 
	class base
	{
		private: int x;
			float y;
		public:
			virtual void getdata( );
			virtual void display( );
	};
	class devb: public base
	{
		private: int roll;
			char name[20];
		public:  virtual void getdata( );
			virtual void display( );
	};
	class devc : public  base
	{
		private: float height;
			float weight;
		public : virtual void getdata( );
			 virtual void display( );
	}:
	void base :: getdata( )
	{
		cout<<” Enter any Integer”;
		cin>>x;
		cout<<”Enter a real no”;
		cin>>y;
	}
	void base ::display( )
	{
		cout<<”The no X=”<<x<<”Y=”<<y<<endl;
	}
	void devb :: display( )
	{
		cout<<”Roll of the Student is:”<<roll<<endl;
		cout<<” Name of the Student is: “<<name<<endl;
	}
	void devb :: getdata( )
	{
		cout<<”Enter the Roll of  the Student:”;
		cin>>roll;
		cout<<”Enter Name of Student :”;
		cin>>name;
	}
	void devc :: getdata( )
	{
		cout<<”Enter height and weight”;
		cin>>height>>weight;
	}
	void devc :: display( )
	{
		cout<<”Height :”<<height<<endl;
		cout<<”Weight :”<<weight<<endl;
	}
	void main( )
	{
		base *ptr[3];
		devb objb;
		devc objc;
		clrscr( );
		ptr[0] = &objb;
		ptr[1] = &objc;
		ptr[0] ->getdata( );
		ptr[1] -> getdata( );
		ptr[1] -> display( );
		ptr[1] -> display( );
		getch ( );
  	}

OUTPUT

Enter the Roll of  the Student: 101
 Enter Name of Student : Vineeth
 height and weight 170 72

Roll of  the Student is:101
 Name of  the Student is:Vineeth
 Height :170
 Weight :72

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