// Dr. Ismail Toroslu
// Example of Inheritance
// 2/25/02
#include "iostream.h"

class X { 
  public: X(int i) {xi =i;xc = 'a';};
         X() {xi=0; xc= 'z';};
         int xi; 
         char xc;
};

class Y: public X {
  public:  Y(int i) {yi = i*i;};
           Y(int i, int j):X(j) {yi =i*i;};
           int yi;
};

main(){

  Y y1(4);
  cout<<y1.yi<<"  "<<y1.xi<<"  "<<y1.xc<<'\n';

  Y y2(4,5);
  cout<<y2.yi<<"  "<<y2.xi<<"  "<<y2.xc<<'\n';

  y1 = y2;

  cout<<y1.yi<<"  "<<y1.xi<<"  "<<y1.xc<<'\n';
}

// output 
// 16 0 z
// 16 5 a
// 16 5 a