Revision dated 09/30/17
Educational Objectives: After completing this assignment the student should have the following knowledge, ability, and skills:
Operational Objectives: Create (define and implement) classes Shape, Box, Cylinder, Rectangle, CommercialVehicle, Carriage, Limo, Bus, Truck, Van, Tanker, and Flatbed.
Deliverables: Six (6) files: vehicles.h, vehicles.cpp, shapes.h, shapes.cpp, makefile, and log.txt
student builds:
stester.x [0..5]: x
vtester.x [0..5]: x
assessment builds:
stester.x [0..5]: x
vtester.x [0..5]: x
testing:
stester.x stester.com [0..5]: x
vtester.x vtester.com [0..25]: xx
code quality and requirements [-30..00]: (xx)
dated submission deduction [2 pts per]: (xx)
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total [0..50]: xx
The DOT Common Carrier Framework supports an application known as FastLane for the Florida Deperatment of Transportation in which data from commercial vehicle transponders is collected in real time at all commercial vehicle inspection locations, enabliing pre-certified vehicles with manifests to bypass physical inspection. The sensors detect a FastLane-equiped vehicle and actively inquire further data from the vehicle and screen the data in real time at an inspector's workstation, who can green-light the vehicle, thus avoiding stopping for physical inspection.
We use "FastLane" to encompass the current assignment, which is to develope the DOT Common Carrier Framework, as well as the next project which is to create the Tracker application client. Together these assignments simulate FastLane.
The current assignment focusses on the "server side" of the FastLane project: creating the various classes that are used by a client program to collect data.
Create and work within a separate subdirectory cop3330/proj4. Review the COP 3330 rules found in Introduction/Work Rules.
Begin by copying all files from the course project directory into your proj4 directory. These should include:
proj4/deliverables.sh proj4/stester.cpp proj4/vtester.cpp
Also copy the sample executables from area51:
area51/stester_i.x area51/vtester_i.x
Change the permissions on the area51 copies to executable:
chmod 700 *.x
It is a good idea to start by looking at the source code for the two test programs and running the area51 executables to get a feel for the testing environment. You can run these in batch mode with a com file:
stester_i.x stester.com vtester_i.x vtester.com
Begin your log file named log.txt. (See Assignments for details.)
You are to define and implement the following classes: Shape, Box, Cylinder, Rectangle, CommercialVehicle, Carriage, Bus, Limo, Truck, Van, Tanker, and Flatbed.
File shapes.h should contain the definitions of the classes Shape, Box, Cylinder, and Rectangle. File shapes.cpp should contain the member function implementations for these classes.
File vehicles.h should contain the definitions of the classes CommercialVehicle, Carriage, Bus, Limo, Truck, Van, Tanker, and Flatbed. File vehicles.cpp should contain the implementations for these classes.
Turn in the files vehicles.h, vehicles.cpp, shapes.h, shapes.cpp, makefile, and log.txt using the submit script.
It is assumed that you have an executable copy of the most current submit script LIB/scripts/submit.sh in your ~/.bin available as a command.
Warning: Submit scripts do not work on the program and linprog servers. Use shell.cs.fsu.edu to submit projects. If you do not receive the second confirmation with the contents of your project, there has been a malfunction.
You are to define and implement the following classes:
| Class Name: | Shape |
| Services (added or changed): | const char* Name () const // returns "generic" float Volume () const // returns volume of object float Area () const // returns area of object |
| Protected variables: |
float x_, y_, z_; // dimensions of shape bool verbose_; // default value 0 given in constructor prototype |
| Class Name: | Box |
| Inherits from: | Shape |
| Services (added or changed): | const char* Name () const // returns "box" float Volume () const // returns volume of box object float Area () const // returns surface area of box object |
| Class Name: | Cylinder |
| Inherits from: | Shape |
| Services (added or changed): | const char* Name () const // returns "cylinder" float Volume () const // returns volume of cylinder object float Area () const // returns surface area of cylinder object |
| Class Name: | Rectangle |
| Inherits from: | Shape |
| Services (added or changed): | const char* Name () const // returns "rectangle" float Area () const // returns area of rectangle object |
| Class Name: | CommercialVehicle |
| Services (added or changed): | const char* Registration () const // returns vehicle registration number const char* Operator () const // returns operator ID const char* CDL () const // returns operator CDL unsigned int PassengerCapacity () const // returns passenger capacity float LoadCapacity () const // returns volume or area of cargo space const char* ShortName () const // returns "UNK" static VehicleType RegDecode (const char* sn) |
| Private variables: | char* vehicleRegistration_; char* operatorID_; char* operatorCDL_; unsigned short passengerCapacity_; |
| Protected variable: | bool verbose_; // default value 0 given in constructor prototype |
| Class name: | Carriage |
| Inherits from: | CommercialVehicle |
| Services (added or changed): | const char* ShortName() const // returns "CAR" |
| Class name: | Bus |
| Inherits from: | Carriage |
| Services (added or changed): | const char* ShortName() const // returns "BUS" |
| Class name: | Limo |
| Inherits from: | Carriage |
| Services (added or changed): | const char* ShortName() const // returns "LIM" |
| Class name: | Truck |
| Inherits from: | CommercialVehicle |
| Services (added or changed): | const char* ShortName() const // returns "TRK" |
| Class name: | Van |
| Inherits from: | Truck , Box |
| Services (added or changed): | float LoadCapacity() const // returns volume of box const char* ShortName() const // returns "VAN" |
| Class name: | Tanker |
| Inherits from: | Truck , Cylinder |
| Services (added or changed): | float LoadCapacity() const // returns volume of cylinder const char* ShortName() const // returns "TNK" |
| Class name: | Flatbed |
| Inherits from: | Truck , Rectangle |
| Services (added or changed): | float LoadCapacity() const // returns area of rectangle const char* ShortName() const // returns "FLT" |
Each class should have the following:
Note that (iv) and (v) together ensure that copies of objects cannot be made. Privatizing the copy constructor and assignment operator prototypes will cause a compiler error if client code attemps to make a copy, and not providing implementing code will cause a link error if an attempt is made to copy objects anywhere in the class implementations.
The parameterized constructors for the classes in the framework are required to have the following arguments:
| Class | Constructor Parameters |
| Shape | float x , float y , float z , bool verbose |
| Box | float width , float length , float height , bool verbose |
| Cylinder | float radius , float height , bool verbose |
| Rectangle | float width , float length , bool verbose |
| CommercialVehicle Carriage , Bus , Limo |
const char* registration , const char* operatorID , const char* operatorCDL , unsigned short passenger capacity , bool verbose |
| Truck | const char* registration , const char* operatorID , const char* operatorCDL , bool verbose |
| Van | const char* registration , const char* operatorID , const char* operatorCDL , float width , float length , float height , bool verbose |
| Tanker | const char* registration , const char* operatorID , const char* operatorCDL , float radius , float length , bool verbose |
| Flatbed | const char* registration , const char* operatorID , const char* operatorCDL , float width , float length , bool verbose |
Only the last argument, verbose, should have a default value of 0 (= false).
Note that CommercialVehicle::verbose_ is protected so that derived classes can access it directly.
Be sure to make exactly the methods virtual that are needed - that is, those that are overridden in derived classes. Do not make a method virtual unless it is needed virtual.
For development and testing of the classes, each constructor and destructor should include a line of code that conditionally sends an identifying message to standard output, whenever verbose_ is 1 = true. For example: if CommercialVehicle::verbose_ is true the Van constructor should output something like "Van(622,Lacher,12345,8.00,10.00,40.00,1)", displaying the actual values of the constructor arguments, and the Van destructor should output the message "~Van()". Run the area51 examples for behavior.
The user-defined type VehicleType is an enumerated type:
| Type name: | VehicleType |
| Enumerated values: | badReg = 0, vehicle, carriage, bus, limo, truck, van, tanker, flatbed |
The static method VehicleType CommercialVehicle::RegDecode(const char* sn) returns the vehicle type based on the first (index 0) character of the serial number sn according to this table:
| sn[0]: | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| VehicleType: | badReg | vehicle | carriage | bus | limo | truck | van | tanker | flatbed |
Using stester and vtester, it is required that your output match the area51 examples exactly.
After your classes have been fully developed and debugged, so they compile without warnings, it is time to test with the tester programs: stester.cpp tests the shapes classes by themselves (and may be used before the vehicles classes are developed) and vtester.cpp tests the vehicles classes.
Thoroughly test your objects with these programs before submitting the project, and keep test records in your log.txt. Note that vtester prompts you for a serial number. The serial number is decoded to get a vehicle type, and an object of that type is created dynamically. You should see the constructor calls displayed, in correct order, because vtester creates the objects with "verbose" set to 1 = true. Then the methods of this object are called. You should see correct serial number displayed. An "OOPS" message may be displayed if a problem is detected with your constructors. Finally the object is deleted, and you should see the destructors called in correct order. Read the source code in both tester programs both to understand how they work.
It is best to use an incremental approach to development. Start with the Shapes classes. First create the header file shapes.h with file header documentation, various #include<xxx> statements, and protection against multiple read. Then, inside the multiple read protection, create the various shape class definitions following the specifications above. (Note: there is no way yet to test the header file.)
Next create the code file shapes.cpp. Begin with file header documentation and the required #include<shapes.h> statement. Then start implementing the functions prototyped in the header file one at a time. After each implementation is written, debug the code using the "co3330" command. (This also debugs the header file.)
Once the shapes are debugged, test them with stester.x. Keep working on these until stester.x output is identical to that of stester_i.x
After getting the shapes done and passed testing, follow the same process with vehicles and vtester.
You will need a value for π = "Pi" for calculating the volume and surface area of a cylinder. This is supported by the math library under the name M_PI:
#include <cmath> // M_PI defined to 21 significant digits
The example executables stester_i.x and vtester_i.x are for your use in testing as well, because we require that your output be exactly the same as ours. The unix "diff" command should be useful in comparing output from our benchmarks and your executables.
Trucks carry freight, not passengers. Carriages carry passengers, not freight.
To execute vtester, enter a serial number at the prompt. The first digit determines the vehicle type. Tester uses the verbose = 1, so you should see all of the constructor and destructor calls for the selected type.
All destructors should be declared virtual. Be sure you understand why. There will likely be an exam question related to this.
Your makefile will need these targets: stester.x vtester.x stester.o vtester.o shapes.o vehicles.o along with the top target
all: stester.x vtester.x
You can debug using the co3330 macro:
co3330 shapes co3330 vehicles
Your classes will be independently tested with client programs written to the interfaces defined above.
Run the distributed executables in LIB/area51/ to see how your programs are expected to behave.