Well it is allot of coding but I think I have done it. Tell me what you think

Code:
/********************************************************************
*   Tax Calculator for CSS 561                                      *  
*   Author: Gregory Hegykozi                                        *
*   Due Date: February 7, 2010                                      *
*   Facilitator: Michael Flanagan                                   *
*********************************************************************        
*        Libraries Included                                         *
*             math.h                                                *   
*             stdio.h                                               *
*             windows.h                                             *
*********************************************************************
*          Variables used                                           *
*stores: an array storing the names of the stores                   *
*taxPercent: used as an array to store the tax price for each store *             
*price: float variable for price                                    *        
*taxTotal: used as an array to calculate tax totals                 *
*totalPrice: float variable to determine total purchase             *
*********************************************************************
*                 Company                                           *
*               Kudler Fine Foods                                   *
*********************************************************************
*            Stores Included                                        *
*               Delmar                                              *
*               Encinitas                                           *
*               La Jolla                                            *
*********************************************************************
*                     Main Version                                  *
* Version: Create a tax calcutator that gives prices for            *
* the 3 Kudler Fine Foods Store showing the tax for 125.00 dollars  *
*********************************************************************
*                     Additions                                     *
* First Addition: Add in the ability for the user to choose their   *
* own purchase price while checking that the user does not put      *
* in a negative number while showing
********************************************************************/

#include <math.h>
#include <stdio.h>
#include <windows.h>


int main (void) //Main program function
{
    
    char    *stores[3] = {"Del Mar", "Encinitas", "La Jolla"}; //store variables
	float	taxPercent[3]={7.25, 7.5, 7.75}; // Tax variable for all three stores
	float	price; //float variable for the price
	
	do {  // starts a do while loop
        printf("\t\tKudler Fine Foods Tax Calculator\n\n");  // prints header 
        printf("Please enter the amount of your purchase: "); //asks for purchase amount
        scanf("%f", &price);  // scans user input
        
        // verifies user input was positive
        if (0.0 > price) { 
                          printf("\n\nPurchase amount must be positive");
                          sleep(2000);
                          system("cls");
                          }
         } while(price < 0.0);
  
    // creates usable variables for price, tax, and total purchase  
    short saleTax[3] = {(((taxPercent[0]/100) * price) + 0.005) * 100, (((taxPercent[1]/100) * price) + 0.005) * 100, (((taxPercent[2]/100) * price) + 0.005) * 100};
    short decimal[3] = {saleTax[0] % 100, saleTax[1] % 100, saleTax[2] % 100};
    short wholeTax[3] = {saleTax[0]/100, saleTax[1]/100, saleTax[2]/100};
    float roundPrice = {price + 0.005}; 
    float taxTotal[3] = {floor((price*(taxPercent[0]/100))*1000)/1000, floor((price*(taxPercent[1]/100))*1000)/1000, floor((price*(taxPercent[2]/100))*1000)/1000};
    float totalPrice[3] = {roundPrice + taxTotal[0],roundPrice + taxTotal[1],roundPrice + taxTotal[2]}; 
	
	//prints purchase information for Del Mar
	printf("\n\n\t%s store\n", stores[0]); 
	printf("\n\tPurchase price: %.2f", roundPrice);
	printf("\n\tSales tax: %d.%d", wholeTax[0], decimal[0]); 
	printf("\n\tTotal Purchase Price: %.2f", totalPrice[0]);
	//end purchase information for Del Mar
    
	//prints purchase information for Encinitas
	printf("\n\n\t%s store\n", stores[1]); 
	printf("\n\tPurchase price: %.2f", roundPrice);
	printf("\n\tSales tax: %d.%d", wholeTax[1], decimal[1]); 
    printf("\n\tTotal Price: %.2f", totalPrice[1]);
    //end purchase information for Encinitas
    
    //prints purchase information for La Jolla
   	printf("\n\n\t%s store\n", stores[2]); 
    printf("\n\tPurchase price: %.2f", roundPrice);
    printf("\n\tSales tax: %d.%d", wholeTax[2], decimal[2]);
    printf("\n\tTotal Purchase Price: %.2f", totalPrice[2]);
    //end purchase information for La Jolla
    
    	
    getch(); // waits for user to press a key

	return 0; // return of int main()

} // end main