//******************************************************************* 
//                                                                    
//  Program:  Taxed Cost Calculator
//                                                                     
//  Author:  Robert Rosebrugh, rrosebrugh@mta.ca
//                                                                    
//  Description:  Illustrates free function
//                                                                    
//  Date:  1999/10/8
//
//  Course Information: CS 1711, Section B, Class Example
//
//  Filename: costcalc.cpp 
//                                                                    
//*******************************************************************

#include <iostream.h>
#include <iomanip.h>
#include "textlib.h"


// this calculates tax-in cost 
double totalCost(int numItems, double price);

void main()
  {
  int numItems;        // how many
  double price,        // at what price
         taxedTotal;   // total with tax included 

  cout << "Enter the number of items purchased and the price>" << endl;
  cin >> numItems >> price;

  taxedTotal = totalCost(numItems, price);

  cout << "The taxed total is : $" << setreal(8,2) <<taxedTotal << endl;


   } // end main


double totalCost(int numItems, double price)
   {
   const double TAXRATE = .05;   // the rate
   double preTaxCost,            // items times price
          taxedCost;             // return value

   preTaxCost = numItems*price;
   taxedCost = preTaxCost*(1 + TAXRATE);

   return taxedCost;

   ) // end totalCost