Problem Set # 3 of 1.124J Foundations of Software Engineering

Reference Readings: From C++ Primer
(in addition to the reference reading from PS1 & PS2):

General Instructions and Turn in Requirements

For the following problem please submit printouts of all the source code files. Please, turn in the source code files electronically, too, as described below.

You can print a (source code) file using the command:

% enscript -2Gr -h -P<printer name> <filename>

and you can dump an X window directly to a printer using the command:

% xdpr -P<printer name> (and clicking on the window you want to print)

Please comment your code when you think it would be helpful for the grading and don't make any other changes to the provided code, except for those that you are asked to make.

For this problem set there are no provided files. You need to write all the code (source code and header files) and the makefile yourself. You need to submit all files required (including the makefile) to compile your program.

Electronic Turnin
You must turnin electronically all the source code files, and makefile that you have used. The makefile will also be graded for correctness. Please, electronically turnin all files that are necessary to compile your code.

To electronically turnin a file use the following command:

% turnin -c 1.124 problem_set_number filename
(e.g. to submit the Car.C file: % turnin -c 1.124 3 Car.C )

Please do not turnin any executable or/and object files electronically. Problems set source code files must be turned in electronically before class starts (i.e. at 2:30 p.m.) on the due date of the problem pet. Any files turned in later than that time will be considered late and will be penalized.

Problem 1:[100%]

The completed program should be a menu-driven application that allows the user, who may be an employee of a vehicle-rental company, to input information about a fleet of vehicles. Assume that the company rents motor vehicles, in particular cars and motorcycles, and bikes. The user should be able to add a vehicle, display the data and number of the already provided vehicles, save the vehicles to files, and quit the program, after making all the proper memory releases.

The first option, [A]: Add a vehicle, should enable the user to give the information about a vehicle to be added in the database. In order to simplify the problem we ignore all other possible options, such as deletion of a vehicle in the database. However, you should set the pointers correclty, so that someone could extend your program. After the user enters 'a' or 'A' the program should give a new menu from where the user should select the kind of vehicle to be added. This is explained in detail below.

The second option [S]: Show vehicles, should display to the screen all the information about the vehicles that have been entered by the user. Details on the exact information to be displayed are provided below.

The third option, [N]: Number of vehicles, should display to the screen the numbers of vehicles, motor vehicles, cars, motorcycles, and bikes. An example of the format that is expected to be used is the following:

Finally, the last option, [Q]: Quit, should release all the dynamically allocated memory and exit. You NEED to put printout statements in the destructors of the various classes that you will use in order to show that the destructors are visited prior to exiting the program. Make sure that there are no memory leaks.

Class hierarchy:

For each class, which will be described in detail next, you need to provide two (2) files, a header file with all the declarations, including the class definitions, and a source code files with all the definitions, such as the externally defined member functions.

Linked list description:

Each new vehicle added by the user should be added to the linked list, using the class VehicleNode which has a pointer to a vehicle object, and, therefore, can point to any instance of the class Vehicle or any of its subclasses.

In particular, you need to provide the following files with the specified contents:

Description of each class:

You can provide any member functions you think are necessary in order to achieve the requested functionality. Pointers to char should point to dynamically allocated memory that should be exactly as much characters as needed to store the corresponding string, e.g. the pointer type, below, should point to a memory of 7 char in order to fit the string "Enduro".

class Vehicle:
This is the base class for all vehicles classes. It should have the following private member variables:

class Property:
This is a superclass of the classes Car, Motorvehicle, and Bike. It should have the following private member variables:

class VehicleNode:
This class is used as a node for the linked list. each instance of the VehicleNode has a pointer pointing to a Vehicle object. You should take advantage of the polymorphic features of C++, e.g. virtual functions to achieve the requested functionality in the most efficient way. The class should have the following private member variables:

Example of program execution:

The first line of the files should describe what it will be saved below it for each of vehicle of that kind as follows:

   Brand     Model      Type      ID Weight    CC HP Seats Airbags Value   Administrator
------------------------------------------------------------------------------------------------------
1   .......        ........       ........
2   .......        ........       etc.

     Brand     Model      Type      ID Weight    CC HP Strokes Value Administrator
-----------------------------------------------------------------------------------------------
1   .......        ........       ........
2   .......        ........       etc.

     Brand     Model      Type      ID Weight Horn Lights Value Administrator
------------------------------------------------------------------------------------------
1   .......        ........       ........
2   .......        ........       etc.

Finally, if the user selects to quit the program should exit after releasing all the dynamically allocated memory. The printout statements in the destructors should display similar to what follows:

You should take advantage of object oriented programming to avoid repeating the same code at different places whenever possible. You should follow the above directions about the class hierarchy, the requirements for each class, the behavior of the menu driven application and not simplify the problem in any way.

You also need to provide a makefile named makePS3 that can be used to compile your program. The name of the executable should be ps3. You need to submit both hardcopies of your code and electronically turn in all files, including the makefile, which will also be graded to check that it works with the following command:

Contents	source code file	header file
main() program and general functions	ps3.C	ps3.h
Vehicle class	vehicle.C	vehicle.h
Motorvehicle class	motorvehicle.C	motorvehicle.h
Car class	car.C	car.h
Motorcycle class	motorcycle.C	motorcycle.h
Bike class	bike.C	bike.h
Property class	property.C	property.h
VehicleNode class	vehicleNode.C	vehicleNode.h

1.124J Foundations of Software Engineering

Problem Set 3

General Instructions and Turn in Requirements

Problem 1:[100%]

Class hierarchy:

Linked list description:

Description of each class:

Example of program execution: