// The idea of the program: A user can create cats (using the command c)
// and myriapods (m), advence to the next day (d), print info about
// existing animals (p), and make cats mew (m).
// Myriapods grow daily a new pair of legs.

// ---------- Page 1 of program listing -------------------- 

import java.util.ArrayList;

public class Animals {

  public static void main(String[] args) {

    // Java 1.4: ArrayList all = new ArrayList(5);
    // Java 1.5: ArrayList <Animal>all = new ArrayList<Animal>(5);
    ArrayList <Animal>all = new ArrayList<Animal>(5);
    int i; Animal a;
    char x='a';

    while (x != 'q') {
      x = Input.readChar();
      switch (x) {
        case 'c': all.add(new Cat(Input.readInputLine(),
                                  Input.readInputLine()));
                  break;
        case 'm': all.add(new Myriapod(Input.readInt()));
                  break;
        case 'd': for (i=0; i<all.size(); i++) {
                    a = (Animal) all.get(i);
                    a.getOlder();
                  }
                  break;
        case 'p': for (i=0; i<all.size(); i++) {
                    a = (Animal) all.get(i);
                    a.print();
                  }
                  break;
        case 'w': for (i=0; i<all.size(); i++) {
                    a = (Animal) all.get(i);
                    if (a instanceof Cat) {
                       Cat cat = (Cat) a;
                       cat.mew();
                      }
                  }
                  break;
      }
    }
  }

}

// ---------- Page 2 of program listing -------------------- 

class Animal {
  int age;

  public Animal () { age = 0; }

  public void getOlder () { age++; }

  public void print () {
    System.out.println(age + " days old");
  }
}

class Cat extends Animal {
  String name, color;

  public Cat (String n, String c) {
    super(); name = n; color = c;
  }

  public void print () {
    System.out.println(name + " is a " + color);
    super.print();
    System.out.println("cat.");
  }

  public void mew () {
    System.out.println(name + " says: Miaouw.");
  }
}

class Myriapod extends Animal {
  int legs;

  public Myriapod (int n) {super(); legs = n; }

  public void print () {
    super.print();
    System.out.println (legs+2*age + " legged myriapod.");
  }

}