CS 1401 Assignment #4

Due Date: correspondingly, Thursday, September 29, 2005, or Friday, September 30, 2005, before the beginning of your lab section.

Goals: to learn to design objects and value-returning methods.

Points: This assignment is worth a total of 20 points. No late assignments will be accepted, but credit will be given for partially completed assignments turned in on time.

Assignment: In this assignment, we will deal with the same new building assignment as in Assignment 3, with the following difference:

• in Assignment 3, we asked you to design one application; the emphasis was on making things work;
• in this assignment, instead of placing everything into a single method main, we ask you to make your code more in line with the object-oriented paradigm; the emphasis now is on designing objects and methods.

Reminder: Many computer science students have complained about the parking, so Bill Gates donated money to build a parking garage for CS students at UTEP.

There are two competing plans: to place this garage near UTEP campus and to place it across the border so that students will be able to take a shuttle to school.

To help in constructing this garage, we need to design an application that would, given the width and depth of every floor (in feet) and the number of floors:

• compute the overall floor area of the garage (in square feet),
• compute the cost of building this garage on the US side by multiplying its cost-per-square-foot by the overall floor area,
• compute the cost of constructing this garage on the Mexican side by first converting the area into square meters and then multiplying its cost-per-square-meter by the floor area in square meters;
• in both cases, we get a 10% discount - provided that we help by designing such an application.

It is also a good idea to define FEET_TO_METERS = 0.3048 and PESOS_TO_DOLLARS = 0.1 (for simplicity) as named constants.

Desired structure: define three classes:

• class Architect whose objects are architects;
• class Design whose objects are designs, and
• an application class.

Class Architect should contain:

• a field for the architect's first name,
• a field for the architect's last name,
• a constructor method for defining a new architect object based on two strings containing, correspondingly, the architect's first name and the architect's last name;
• a method firstName that returns the architect's first name;
• a method lastName that returns the achitect's last name;
• a method fullName that returns the architect's full name.

Class Design should contain:

• a field for the width of the floor (in feet);
• a field for the depth of the floor (in feet);
• a field for the number of floors;
• a constructor method for defining a new design based on the two real numbers that describe the width and depth of each floor and an integer that describes the number of floors;
• a method areaOfOneFloor that returns the area of one floor in square feet;
• a method overallFloorArea that returns the overall floor area in square feet;
• a method overallFloorAreaInMeters that returns the overall floor area in square meters;
• a method usGaragePrice that returns the price of a US-based garage (before the discount);
• a method juarezGaragePrice that returns the price of a Juarez-based garage in pesos (before the discount),
• a method juarezGaragePriceInDollars that returns the price of a Juarez-based garage converted to dollars (before the discount),
• a method usGaragePriceDiscounted that returns the price of a US-based garage (after the discount), and
• a method juarezGaragePriceDiscounted that returns the price of a Juarez-based garage converted in dollars (after the discount);

The application class should do the following:

• ask an architect:
  • for his or her first name,
  • for his or her last name,
  • for the width and depth of each floor, and
  • for the number of floors;
• based on the answers, construct the corresponding objects of type Architect and of type Design;
• use the methods defined for such objects to print a receipt that displays:
  • the name of the architect,
  • the price of a US-based garage (before the discount),
  • the price of a Juarez-based garage in dollars (before the discount),
  • the price of a US-based garage (after the discount), and
  • the price of a Juarez-based garage in dollars (after the discount).