// variables.cpp : Defines the entry point for the console application.
//program to demonstrate program functional decomposition
//1. define variables
//2. assign values to variables - assignment and interactively
//3. order computations
//4. output results

#include "stdafx.h"

//enables use of cout and cin
#include "iostream.h"		

//define variables
float item_price;			
float tax_percentage;
float tax_amount;
int num_of_items;
float total_price_of_order;

int _tmain(int argc, _TCHAR* argv[])
{
	//assigns variable values with assignment statements
	item_price = 5.50;		
	tax_percentage = .06;

	//assigns variable value with computation and orders computations
	tax_amount = item_price * tax_percentage;	

	//assigns variable values interactively with a user prompt
	cout << "enter the number of items bought: " << endl; 
	cin >> num_of_items;						

	// orders computation
	total_price_of_order = (tax_amount + item_price)* num_of_items;
												// order of computations
	//output of results
	cout << "price of order is: " << total_price_of_order << endl;
												
	return 0;
}