Topics:

Introduction to structures

Introduction to classes

Structures to classes

Object oriented design

Problem 2.1

Declare a structure with a type name: Car

containing:

reportingMark a string of 5 or less upper case characters

carNumber an int

kind could be box, tank, flat, or other

loaded a bool

destination a string with a destination or the word NONE

Note: A destination is required if the car is loaded. If it is not

loaded the destination may be either a destination or the word NONE.

Create the following functions:

main

* Uses new to obtain space for the data structure

* Calls the other two functions

* Deletes the space obtained using new

input

* Read all the data from the user

* After all the data has been read, put all this data into the structure

output

* Print the data in a neat format

Put the main function first.

Use the function names and field names specified above.

Arrange the functions in the order listed above.

Test your program with the following data:

reportingMark SP

carNumber 12345

kind flat

loaded true

destination Salt Lake City

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Problem 2.2

Repeat problem 2.1 with the following changes:

Use class rather than struct with the type name: Car

Make the data in the class Car public.

Revise the input so the input function will only read the data from the

user, and then it will call an additional function named setUpCar which

will put the data into the object.

Test with the same data.

Topics:

Introduction to classes (continued)

Overloading function names

Abstract data types

Friend functions

Overloading operators

Use the same format for problem and function headings as assignment 1.

Problem 3.1

Copy the solution from problem 2.2

Make the following additions and changes:

1. Arrange the functions in the order:

* main

* output

* setUp (was setUpCar)

* input

2. Change the output function so it is a member function of the class Car.

3. Change the name of the setUpCar function to setUp and make it a

member function of the class Car, with five parameters specified as

constant reference parameters.

4. Make all the data in the Car class private and make the member

functions public.

5. Do NOT make the input function a member function.

6. Change the parameters of the input function to five reference

parameters corresponding to the five fields in the class.

7. In main define five variables. Pass these variables to the input

function so the input function can set their values.

8. In main define a Car object. This time the Car object will be in the

stack for main, rather than in the heap. Name this object car1.

9. In main call the setUp function and pass the five variables, rather

than calling it from the input function.

10. In main call the output function.

11. Test the program with the same data as was used in assignment 2.

Problem 3.2

Copy the solution from problem 3.1

Make the following additions and changes:

1. Build three constructors and a destructor for your Car class:

* A constructor that accepts five constant reference parameters.

Build this constructor with only one line of code that calls the

setUp member function.

* A copy constructor.

* A default constructor that sets the following values:

reportingMark (an empty string)

carNumber 0

kind other

loaded false

destination NONE

* A destructor that does nothing, basically a stub.

2. Arrange the constructors and destructor in the class before the

other member functions in the order:

default constructor, copy constructor, constructor that takes five

constant reference parameters, destructor

3. Arrange the function definitions in the same order.

4. Remove the call to the setUp function from the main function.

5. Revise the main function to create three Car objects in the stack:

6. car1 with the same values used in assignment B.

7. car2 which is a copy of car1.

8. car3 which is created with the default constructor.

Now, add code in the main function to print these headings and use the

Car member function to print the data for each of the three cars:

Contents of car1:

reportingMark: SP

carNumber: 34567

kind: box

loaded: true

destination: Salt Lake City

Contents of car2:

reportingMark: SP

carNumber: 34567

kind: box

loaded: true

destination: Salt Lake City

Contents of car3:

reportingMark:

carNumber: 0

kind: other

loaded: false

destination: NONE

Problem 3.3

Copy the solution from problem 3.2

Create a friend function for the function operator== which tests to see

if two objects are equivalent. The two objects are equivalent if they

have the same reportingMark and number (do not look at the kind, loaded,

and destination fields).

Test with the following code in main:

if (car1 == car2)

cout << "car1 is the same car as car2 ";

else

cout << "car1 is not the same car as car2 ";

if (car2 == car3)

cout << "car2 is the same car as car3 ";

else

cout << "car2 is not the same car as car3 ";

Write the code to change car2 to have the following information:

reportingMark: UP

carNumber: 81002

kind: box

loaded: true

destination: Spokane

Print out car1, car2 and car3 after the edits.