//Course:        COSC 1435
//Lab #:         7
//Date assigned: Oct 6 2010
//Date due:      Oct  12, 2010
//
//Purpose: The purpose of this assignment is to create a customer invoice
//
//Input:   Keyboard input for the
//           customer’s first and last names
//           length, width and height of a “flat-rate” box
//
//Output:  Screen output for the
//           customer’s full name, last name first
//           dimensions of the box
//           base area and the volume and surface area of the box
//           set rate according to size
//           price of the box (rate * surface area)
//
//Program outline:
//         Prompt the user and enter the customer’s first name and last name.
//         Prompt the user and enter the length, width and height of the box.
//         Calculate the area of the base of the box.
//         Calculate the volume of the box.
//         Calculate surface area.
//         chose rate based on size
//         calculate price by rate * surfacearea



/* this was compiled at home on a windows based system, so i had to slightly
change somethings, i included the source code and my compiled executable. */

#include <iostream>
#include <iomanip>    // reqd for setw
#include <string>    // Required for the string class.
using namespace std;

int main()
{

float length, width, height, area, volume, price, area1, area2, area3, surfacearea, rate;

const double rate1=.026 , rate2=.028 , rate3=.030, rate4=0.32;

/*Because we need to deal with decimals, an int or double won't work. It needs
to be a float.*/
char str[100]; /*A string is an array of chars, with a null 0 at the end
               so, in order to use cin.get, I had to switch to its real type.*/

  cout << "Enter customer name (lastname first) : ";

   cin.get(str,99);
   /* We were only getting up to the space. using .get, it will fetch
   the whole string for us.*/

   fflush(stdin);/* Since this is compiled in dev-cpp win7
                 We need to clear our input buffer
                 before we can get more input, otherwise
                 our previous input will be used agian.
                 Even if it allowed a second input, we'd
                 be looking at a stack overflow error.

Keep in mind, fflush() is not a standered call.  In Unix im not sure if this is neccessary
but maybe

void clear_kb(void)
{
    char junk[255];
    fgets (junk,255,stdin);

. */

  cout << "What is the length of the box in inches? ";
   cin >> length;
    fflush(stdin);
  cout << "What is the width of the box in inches? ";
   cin >> width;
    fflush(stdin);
  cout << "What is the height of the box in inches? ";
   cin >> height;
    fflush(stdin);
  //    cout << "What is price of shipment? ";
  //    cin >> price;
  //    fflush(stdin);
  volume = length * width * height;
  area1 = length * width, area2 = length * height, area3 = width * height;
  surfacearea = (2 * area1 + 2 * area2 + 2 * area3);

 if (surfacearea <= 1000)
    rate = rate1;

    else if (1000 < surfacearea && surfacearea <= 2000)
    rate = rate2;

        else if (2000 < surfacearea && surfacearea <=3000)
        rate = rate3;

            else if (3000 > surfacearea)
            rate = rate4;



 /* area1 = length * width ,area2 = length * height ,area3 = width * height ;
    lenght * width = area1 is the wrong format in programming. the destination (for lack
    of a better term is always on the left.


  area = (2 * area1) + (2 * area2) + (2* area3) for calculating total surface area ;*/
  area = length * width;

  cout << "CUSTOMER INVOICE" << endl;
  cout << "\nCUSTOMER NAME: " << str << endl; /*Escape sequences  */
  cout << " " <<endl;
  cout << "BOX SPECIFICATIONS" <<endl;
  cout << " " <<endl;
  cout << "length    :" << setw(8) << length<< " inches" << endl;
  cout << "width     :" << setw(8) << width << " inches"<< endl;
  cout << "height    :" << setw(8) << height << " inches"<< endl;
  cout << " " <<endl;
  cout << "BOX CHARACTERISTICS" << endl;
  cout << " " <<endl;
  cout << setprecision(2) <<fixed;
  cout << "base area    :" << setw(10) << area << " square inches"<< endl;
  cout << "volume       :" << setw(10) << volume <<" cubic inches" << endl;
  cout << "surface area :" << setw(10) << surfacearea <<" square inches"<< endl;


  cout << "price is     :" << setw(10) << surfacearea * rate << " U.S Dollars" << endl;

  getchar(); /*getchar requires the user press enter before closing. Allows
             those of us running windows to be able to see the information.
             Can be removed if needed.*/
}