CS 4448 - Fall 1998
Object-Oriented Programming and Design
Homework #3

Due on Monday, September 21 at the start of class.

Print out this C++ assignment with a sample run and the one question at the bottom of this assignment/web page and turn it in at the start of class. Also tar and gzip the necessary files (.h .cc makefile etc.) for the TA to compile and test your code. Do not send the executable. Email this tgz(tar/gzip) file to the TA before the start of class.

C++ program - And you are?

For this assignment you need to create the classes below and they must respond to the methods in the way specified. Your implementation may respond to additional methods but the methods and and responses should be appropriate for that class. First the instantiation method is given and then examples of method responses follow.

Create the classes below and the constructor

Dog - sasha = Dog(40,"Sasha","Shepard");
Cat - romeo = Cat(20,"Romeo","Mix");
Sprinter - carl = Sprinter(180,"Carl Lewis")
Molecule - water = Molecule("Water")
Hydrogen - h = Hydrogen()
Krypton - kr = Krypton()
Pine - pine = Pine(25,20)

Methods to implement and the result

sasha.name() -> "Sasha"
romeo.name() -> "Romeo"
romeo.mass() -> 20
romeo.mass(25) -> 25
romeo.mass() -> 25
sasha.speak() -> "Whof, Whoph"
romeo.speak() -> "Meow"
sasha.legs() -> 4
sasha.hasLiveYoung() -> True
carl.legs() -> 2
carl.speak() -> "Sorry, gotta run"
carl.mass() -> 180
pine.name() -> "Pine"
pine.height() -> 20
pine.deciduous() -> False
water.mass() -> 18.01528
water.symbol() -> "H2O"
water.name() -> "Water"
h.name() -> "Hydrogen"
h.mass() -> 1.00794
kr.mass() -> 83.8
kr.family() -> "Noble Gas"
kr.symbol() -> "Kr"

Below is the main you should use and the associated output.
Note: I create some instances using new just to show you a bit more,
no other reason.
----------------------------main.cc-----------------------------
#include < stdio.h > //the includes string.h, etc..
#include < iostream.h >
#include < iomanip.h >
#include <"yourincludes.h">

// this is the main that creates object instances and calls their methods
int
main(int argc, char *argv[]) {
  Dog sasha(40,"Sasha","Shepard"); // the memory is automatically
        allocated when entering the basic block and will be released
        upon exit
  Cat *romeo;
  Sprinter carl(180,"Carl Lewis");
  Molecule water("water");
  Hydrogen *h; 
  Krypton kr;
  Pine pine(25,20);
  int count=0;

  romeo = new Cat(20,"Romeo","Mix"); 
  h = new Hydrogen(); // you are allocating the memory

  cout << ++count << ". " << "sasha.name() ->" << sasha.name() << endl;
  cout << ++count << ". " << "romeo->name() ->" << romeo->name() << endl;
  cout << ++count << ". " << "romeo->mass() ->" << romeo->mass() << endl;
  cout << ++count << ". " << "romeo->mass(25) ->" << romeo->mass(25) << endl;
  cout << ++count << ". " << "romeo->mass() ->" << romeo->mass() << endl;
  cout << ++count << ". " << "sasha.speak() ->" << sasha.speak() << endl;
  cout << ++count << ". " << "romeo->speak() ->" << romeo->speak() << endl;
  cout << ++count << ". " << "sasha.legs() ->" << sasha.legs() << endl;
  cout << ++count << ". " << "sasha.hasLiveYoung() ->"
       << sasha.hasLiveYoung() << endl;
  cout << ++count << ". " << "carl.legs() ->" << carl.legs() << endl;
  cout << ++count << ". " << "carl.speak() ->" << carl.speak() << endl;
  cout << ++count << ". " << "carl.mass() ->" << carl.mass() << endl;
  cout << ++count << ". " << "pine.name() ->" << pine.name() << endl;
  cout << ++count << ". " << "pine.height() ->" << pine.height() << endl;
  cout << ++count << ". " << "pine.deciduous() ->" << pine.deciduous() << endl;
  cout << ++count << ". " << "water.mass() ->" << setiosflags(ios::fixed)
       << setw(9) << setiosflags(ios::showpoint) << setprecision(5)
       << water.mass() << endl;
  cout << ++count << ". " << "water.symbol() ->" << water.symbol() << endl;
  cout << ++count << ". " << "water.name() ->" << water.name() << endl;
  cout << ++count << ". " << "h->name() ->" << h->name() << endl;
  cout << ++count << ". " << "h->mass() ->" << h->mass() << endl;
  cout << ++count << ". " << "kr.mass() ->"
       << setprecision(1) << kr.mass() << endl;
  cout << ++count << ". " << "kr.family() ->" << kr.family() << endl;
  cout << ++count << ". " << "kr.symbol() ->" << kr.symbol() << endl;

  delete romeo;  
  delete h;  // you must therefore release the memory

};


------------Output---------------
  1. sasha.name() -> Sasha 
  2. romeo->name() -> Romeo
  3. romeo->mass() -> 20 
  4. romeo->mass(25) -> 25 
  5. romeo->mass() -> 25 
  6. sasha.speak() -> Whof, Whoph
  7. romeo->speak() -> Meow 
  8. sasha.legs() -> 4 
  9. sasha.hasLiveYoung() -> True 
 10. carl.legs() -> 2 
 11. carl.speak() -> Sorry, gotta run
 12. carl.mass() -> 180 
 13. pine.name() -> Pine 
 14. pine.height() -> 20 
 15. pine.deciduous() -> False 
 16. water.mass() -> 18.01528 
 17. water.symbol() -> H2O
 18. water.name() -> Water
 19. h->name() -> Hydrogen
 20. h->mass() -> 1.00794 
 21. kr.mass() -> 83.8 
 22. kr.family() -> Noble Gas
 23. kr.symbol() -> Kr 

You must have a Makefile to compile your code:
------------example------------
sources = Sprinter.cc Cat.cc Dog.cc main.cc
 
hw3 : $(sources)
	g++ -g -o hw3 $(sources) 

clean:	
	rm -f hw3 *~
======================================

Questions

Answer this question after you have completed the preceding.

Describe how your implementation does and does not conform to the OO paradigm.