• Definition:-

                 A class derived from already derived class is called multilevel inheritance.

#include<iostream.h>
#include<conio.h>
class A
{
      Public:
      void showA()
      {
            cout<<"It is class A";
      }  
};
class B:public A    //class b derived from class A....
{
         Public:
         void showB()
         {
                  cout<<"It is class B";
         }
};
class C:public B       //class C derived from derived class, class B....
{
          public:
          void showC()
          {
                  cout<<"It is class C";
          }
};
void main()
{
        C c1;
        c1.showA();
        c1.showB();
        c1.showC();
        getch();
}

OUTPUT:-It is class A
It is class B
It is class C

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