#include<iostream.h>
    #include<conio.h>
    class number
    {
    	   public:
    		 void getdata()
    		 {
    		 cout<<"byee";
    		 }
    };
    void addition:public number
    {
    	     public:
    		    void putdata()
    		    {
    		    cout<<"hii";
    		    }
    };
    void subtraction:public number
    {
    	   public:
    		 void display()
    		 {
    		 cout<<"byee";
    		 }
    };
    void multiplication:public number
    {
    	   public:
    	      void putchar()
    	      {
    	      cout<<"hello";
    	      }
    };
    void main()
    {
    	 clrscr();
    	 number a;
    	 a.getdata();
    	 a.putdata();
    	 a.display();
    	 a.putchar();
    	 getch();
    }