OOP  - Assignment 4

Topic:    Operator overloading

Points:   25

Instructor: Dana Steil

 

Modify your String Class to overload the following operators according the given specifications.

 

Return

Parameter(s)

Description

const

=

const String&

String,char*

int or char

Sets the member variable to the parameter passed in. Returns what’s at this.

N

+

String

String, char*

int or char

Returns a new object of type String that contains the contents of “this” String with the contents of the parameter concatenated.

Y

+=

void

String, char*

int or char

Concatenates the parameter to its own string.

N

*

String

int n

Returns a String that is the current string repeated n times.

Y

*=

void

int n

Changes the current String to be its current contents repeated n times.

 

==

bool

String, char*

int or char

Returns true if the contents of the parameter match exactly the contents of its own string.  Returns false otherwise.

Y

< 

bool

String, char*

int or char

Returns true if the contents of its own string is lexicographically less than the contents of the parameter.  Returns false otherwise.

Y

> 

bool

String, char*

int or char

Returns true if the contents of its own string is lexicographically greater than the contents of the parameter.  Returns false otherwise.

Y

<=

bool

String, char*

int or char

Returns true if the contents of its own string is lexicographically less than or equal to the contents of the parameter.  Returns false otherwise.

Y

>=

bool

String, char*

int or char

Returns true if the contents of its own string is lexicographically greater than or equal to the contents of the parameter.  Returns false otherwise.

Y

!=

bool

String, char*

int or char

Returns false if the contents of the parameter match exactly the contents of its own string.  Returns true otherwise.

Y

>> 

istream &

istream & and

String &

Friend function that sets the member variables of the String object passed in.

NA

<< 

ostream &

ostream & and

String &

Friend function that prints the member variables of the String object passed in.

NA

[]

const char&

int

Returns a constant reference to the character in the array at the given position.

Y

[]

char&

int

Returns a reference to the character in the array at the given position.

N

()

int

None

Returns the length of the string.

Y

 

 

Add a public static Boolean data member isCaseSensitive.  Make all comparisons case sensitive when it is true.  This variable should be initialized to false.

 

Notes:

1.       You should add as many private helper functions as is appropriate.

2.       Let the conversion constructors work for you.