// constructors and derivated classes
#include <iostream.h>

class mother {
public:
    mother ()
    { cout << "mother: no parameters\n"; }
    mother (int a)
    { cout << "mother: int parameter\n"; }
};

class daughter : public mother {
public:
    daughter (int a)
    { cout << "daughter: int parameter\n\n"; }
};

class son : public mother {
public:
  son (int a) : mother (a)
    { cout << "son: int parameter\n\n"; }
};

int main () {
  daughter cynthia (1);
  son daniel(1);
  
  return 0;
}