Multi Level Inheritance

Program to demonstrate Multi Level Inheritance :-

#include<iostream.h>
#include<conio.h>

class base
 {
    int a;
      public:
      void base_get()
       {
          cout<<"\nEnter value for base class : ";
            cin>>a;
         }
      void base_show()
       {
          cout<<"\nValue in base class : "<<a;
         }
   };

class intermediate:public base
 {
    int x;
      public:
      void intermediate_get()
       {
          cout<<"\nEnter value for intermediate class : ";
            cin>>x;
         }
      void intermediate_show()
       {
          cout<<"\nValue in intermediate class : "<<x;
         }
   };

class derived:public intermediate
 {
    int m;
      public:
      void derived_get()
       {
          cout<<"\nEnter value for derived class : ";
            cin>>m;
         }
      void derived_show()
       {
          cout<<"\nValue in derived class : "<<m;
         }
   };

void main()
 {
    derived d;
      d.derived_get();
      d.intermediate_get();
      d.base_get();
      d.derived_show();
      d.intermediate_show();
      d.base_show();
    getch();
   }