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Deriving a Class from another Derived Class

Many of the peoples think that deriving a class from other derived classes is a confusing thing, that’s why I have written this article to let them know that deriving such classes is no different. To the compiler it doesn’t matter whether the class from which a new class is derived is itself derived or not.

The example program below illustrates this:

  // --   INHERITANCE --
  // Example program to illustrate
  // the derivation of a class
  // from another derived class

  // base class
  class one
    int a;

    void setone(int num){a=num;}
    int getone(){return a;}

  // derived from base class 'one'
  class two:public one
    int b;

    void settwo(int num){b=num;}
    int gettwo(){return b;}

  // derived from derived class
  // 'two'
  class three:public two
    int c;

    void setthree(int num){c=num;}
    int getthree(){return c;}

  void main(void)
    // declare objects
    one o1;
    two o2;
    three o3;

    // set values



    // display values



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