#include <stdlib.h>
#include <string.h>
#include <iostream.h>
#include <fstream.h>
#include <assert.h>

class b									{
private:
  int num;
  int denom;
public:
  b();
  b(int,int);
  virtual void show() {cout << "b" << endl;}  };

class d:public b							{
private:
  int neither;
public:
  d(int,int,int);
  void show() {cout << "d" << neither << endl;}        };

b::b(int x, int y):num(x),denom(y) {}

d::d(int x,int y,int z):b(x,y),neither(z) {}



// prints       b
//              d4
int main(void)                                                           {
  d d1(5,6,7);
  d* d2 = new d(2,3,4);
  b b1=d1;
  b1.show();
  b*b2=d2;
  b2->show();
  return 0;                                                     	}