Assignment 10

Assignment 10 - Polymorphic Quadrilaterals

due March 27th
This assignment will not be accepted late.

This assignment will give you practice with inheritance and polymorphism.

Create the following class hierarchy.

Quadrilateral Inheritance Diagram

Program Specifications

The Quadrilateral class:

must have 3 data members: two sides of the quadrilateral (use type int) and the type of the quadrilateral (use type string)
must contain two pure virtual function, area() and perimeter()

You must also create a non-friend overloaded insertion operator for printing the Quadrilateral. It will produce the output shown below.
The Rectangule, Square, and Rhombus classes should have no data members of their own.
The Parallelogram class should have a height data member.
The input file is shown below. The format for this file will be a quadrilateral type name, followed by 1, 2, or 3 ints representing requisite data members of the class. Specifically the data format will appear as:

Quadrilateral	# of arguments	Representing
Rectangle	2	length and width (a and b)
Square	1	side (a)
Parallelogram	3	side, side, and height (a, b, h)
Rhombus	2	side and height (a and h)

Input file

rectangle 7 4
square 7
parallelogram 6 4 3
rhombus 7 4
rectangle 6 4
square 6
parallelogram 6 4 2
rhombus 7 3
rectangle 5 4
square 6
parallelogram 6 4 3
rhombus 9 5
rhombus 10 3
rectangle 19 10
square 8
parallelogram 7 5 3
rhombus 9 1
rectangle 11 2

Requirements

Your program needs to perform the following tasks:

Read in the data file, correctly processing each particular type of Quadrilateral.
Your solution must implement polymorphism.
You must use the main provided below.
Your output should match the following.

Program Output

Rectangle: sides 7 and 4 area=28 perimeter=22
Square: side 7 area=49 perimeter=28
Parallelogram: sides 6 and 4 area=18 perimeter=20
Rhombus: side 7 area=28 perimeter=28
Rectangle: sides 6 and 4 area=24 perimeter=20
Square: side 6 area=36 perimeter=24
Parallelogram: sides 6 and 4 area=12 perimeter=20
Rhombus: side 7 area=21 perimeter=28
Rectangle: sides 5 and 4 area=20 perimeter=18
Square: side 6 area=36 perimeter=24
Parallelogram: sides 6 and 4 area=18 perimeter=20
Rhombus: side 9 area=45 perimeter=36
Rhombus: side 10 area=30 perimeter=40
Rectangle: sides 19 and 10 area=190 perimeter=58
Square: side 8 area=64 perimeter=32
Parallelogram: sides 7 and 5 area=21 perimeter=24
Rhombus: side 9 area=9 perimeter=36
Rectangle: sides 11 and 2 area=22 perimeter=26

Use this main():

int main()
{
    const string filename = "c:/temp/ass10data.txt"; // use your filename here
    ifstream fin(filename.c_str());
    if (!fin)
    {
        cerr << "Unable to open " << filename << endl;
        exit(1);
    }
    string buffer;
    Quadrilateral* ptrQuad;
    while (getline(fin,buffer))
    {
        // Process only valid input
        if (buffer.size() > 1)
        {
            ptrQuad = createQuadrilateralFromString(buffer);
            cout << *ptrQuad << endl;
            delete ptrQuad;
        }
    }
    fin.close();
}

You may need the following formulas for this assignment: