[9:36am]  <mccoy@strauss> cat rectangle.h
// rectangle.h
// Delcaration of the rectangle class
// Problem 6.12 in D&D

// prevent multiple inclusions of header file
#ifndef rectangle_H
#define rectangle_H

// rectangle class definition
class rectangle
{
public:
  rectangle(float = 1, float = 1);
  void setrectangle(float, float);
  void setlength(float);
  void setwidth(float);

  float perimeter();
  float area();
  
  void printrec();
  void printlw();

private:
  float length;
  float width;
};

#endif


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[9:38am]  <mccoy@strauss> cat rectangle.cc
// rectangle.cc
// Member function definitions for rectangle class
// Problem 6.12 in D&D

#include <math.h>
#include <iostream.h>
#include "rectangle.h"

// constructor function to initialize private data
// note default values of 1 (see class definition)
rectangle::rectangle(float l, float w)
{
  setrectangle(l, w);
}

// set functions for rectangle
void rectangle::setrectangle(float l, float w)
{
  length = (l > 0 && l <= 20) ? l : 1;
  width = (w > 0 && w <= 20) ? w : 1;
}

void rectangle::setlength(float l)
{
  length = (l > 0 && l <= 20) ? l : 1;
}

void rectangle::setwidth(float w)
{
  width = (w > 0 && w <= 20) ? w : 1;
}

// rectangle calculations
float rectangle::perimeter()
{
  return (2 * length) + (2 * width);
}

float rectangle::area()
{
  return length * width;
}

// printing functions
// prints a rectangle of approximate integer size
void rectangle::printrec()
{
  int l, w;
  for (l = 1; l <= floor(length + 0.5); l++)
    {
      for (w = 1; w <= floor(width + 0.5); w++)
        cout << "*";
      cout << endl;
    }
}

// prints length and width of rectangle
void rectangle::printlw()
{
  cout << "The rectangle has a length of "
       << length
       << " and a width of "
       << width
       << endl;
}

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[9:39am]  <mccoy@strauss> cat 6.12-rectangle.cc 
// Driver program to test rectangle class
// problem 6.12 in D&D

#include <iostream.h>
#include "rectangle.h"

main ()
{
  float l, w;
  char again;
  rectangle r, rand1;

  do
    {
      cout << "Input length and width of rectangle: ";
      cin >> l >> w;
      r.setrectangle(l, w);
      rand1.setlength(l-1);
      rand1.setwidth(w-1);

      cout << endl;
      cout << "The rectangle r:" << endl;      
      r.printlw();
      r.printrec();
      cout << "The perimeter of r is: " << r.perimeter() << endl;
      cout << "The area of r is: " << r.area() << endl;

      cout << endl;
      cout << "The rectangle rand1:" << endl;
      rand1.printlw();
      rand1.printrec();
      cout << "The perimeter of rand1 is: " << rand1.perimeter() << endl;
      cout << "The area of rand1 is: " << rand1.area() << endl;
      cout << endl;

      cout << endl;
      cout << "Setting rectangle rand1 to be the same as original rectangle r"
           << endl;
      rand1 = r;
      cout << "The rectangle rand1 is now:" << endl;
      rand1.printlw();
      rand1.printrec();
      cout << "The perimeter of rand1 is: " << rand1.perimeter() << endl;
      cout << "The area of rand1 is: " << rand1.area() << endl;
      cout << endl;
      
      cout << "Would you like to try again? (y/n) ";
      cin >> again;
    }   while (again == 'y');

return 0;
}


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[9:44am]  <mccoy@strauss> CC 6.12-rectangle.cc rectangle.cc
6.12-rectangle.cc:
rectangle.cc:
[9:44am]  <mccoy@strauss> a.out
Input length and width of rectangle: 3
4

The rectangle r:
The rectangle has a length of 3 and a width of 4
****
****
****
The perimeter of r is: 14
The area of r is: 12

The rectangle rand1:
The rectangle has a length of 2 and a width of 3
***
***
The perimeter of rand1 is: 10
The area of rand1 is: 6


Setting rectangle rand1 to be the same as original rectangle r
The rectangle rand1 is now:
The rectangle has a length of 3 and a width of 4
****
****
****
The perimeter of rand1 is: 14
The area of rand1 is: 12

Would you like to try again? (y/n) y
Input length and width of rectangle: 7 3

The rectangle r:
The rectangle has a length of 7 and a width of 3
***
***
***
***
***
***
***
The perimeter of r is: 20
The area of r is: 21

The rectangle rand1:
The rectangle has a length of 6 and a width of 2
**
**
**
**
**
**
The perimeter of rand1 is: 16
The area of rand1 is: 12


Setting rectangle rand1 to be the same as original rectangle r
The rectangle rand1 is now:
The rectangle has a length of 7 and a width of 3
***
***
***
***
***
***
***
The perimeter of rand1 is: 20
The area of rand1 is: 21

Would you like to try again? (y/n) y
Input length and width of rectangle: 2 2

The rectangle r:
The rectangle has a length of 2 and a width of 2
**
**
The perimeter of r is: 8
The area of r is: 4

The rectangle rand1:
The rectangle has a length of 1 and a width of 1
*
The perimeter of rand1 is: 4
The area of rand1 is: 1

Setting rectangle rand1 to be the same as original rectangle r
The rectangle rand1 is now:
The rectangle has a length of 2 and a width of 2
**
**
The perimeter of rand1 is: 8
The area of rand1 is: 4

Would you like to try again? (y/n) n
[9:45am]  <mccoy@strauss>