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project using while loops

jcmd (5)
This whole project i have to create is "A high-end coffee shop has just hired you as their senior programmer. They have tasked you to design and implement two C++ applications allowing employees to take orders from its customers and to determine weekly sales.

Application #1: Create an application allowing employees to take orders and then tally up the total costs from its customers.

The coffee shop offers the following items on its menu:
• Coffee
• Tea
• Soda
• Juice
• Manager Special (store manager offers a drink of their choice to customers)

The application must be able to:
• Accept one or more drinks in a single order; use a sentinel value to terminate an order
• Once an order has been placed, tally up the total cost of the order"

I have created a code that displays the prices of the drinks and allows me to input the variable to keep going adding the totals, but once I input the file the program gives me a run-time error,I have changed things and they I end up getting different errors, or not completing what the program actually wants to do. I'm stuck please guide me where my error is made. Thank you 
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  // project 4 - Juan Maraboli 3/27/16
#include <iostream>
#include <iomanip>

using namespace std;
int main()
{
	int number;
	float cost;
	char beverage;
	bool validBeverage;
	cout << fixed << showpoint << setprecision(2);
	do
	{
		cout << endl << endl;
		cout << "Welcome to My Coffee Shop! Our Offers are:" << endl;
		cout << "C: Coffee $1.29" << endl;
		cout << "J: Juice $1.50" << endl;
		cout << "S: Soda $1.00" << endl;
		cout << "T: Tea $1.39" << endl;
		cout << "M: Manager Special $2.99" << endl;
		cout << "X: Done with Placing Oder" << endl;
		cout << "What drink would you like? Select C, J, S, T, M (or X to finish with order)" << endl;
		cin >> beverage;
		switch (beverage)
		{
		case 'c':
		case 'C':
		case 'j':
		case 'J':
		case 's':
		case 'S':
		case 't':
		case 'T':
		case 'm':
		case 'M':validBeverage = true;
			break;
		default: validBeverage = false;
		}
		if (validBeverage)
		{
			// Fill in the code to begin a switch statement
			// that is controlled by beverage

			switch (beverage)
			{
			case 'c':
			case 'C': cost = cost + 1.29;
				cout << "Thank you, You have ordered coffee as your drink" << endl;
				break;
				// Fill in the code to give a case for tea ($.75 a cup)
			case 'j':
			case 'J': cost = cost + 1.50;
				cout << "The total cost is $ " << endl;
				break;
				// Fill in the code to give the case for hot chocolate ($1.25 a cup)
			case 't':
			case 'T': cost = cost + 1.39;
				cout << "The total cost is $ " << endl;
				break;
				// Fill in the code to give the case for cappuccino ($2.50 a cup)
			case 's':
			case 'S': cost = cost + 1.00;
				cout << "The total cost is $ " << cost << endl;
				break;
			case 'm':
			case 'M': cost = cost + 2.99;
				cout << "The total cost is $ " << cost << endl;
				break;
			case 'x':
			case 'X': cout << " Please come again" << endl;
				break;
				// Fill in the code to write a message
				// indicating an invalid selection.
			default:
				cout << "Invalid selection" << endl;
				cout << " Try again please" << endl;
			}
		}
	} // Fill in the code to finish the do-while statement with the
	  // condition that beverage does not equal E or e.
	while ((beverage != 'x') || (beverage != 'X'));
	// Fill in the appropriate return statement
	return 0;

}


Thanks for your input and help.
Last edited on
koothkeeper (429)
One problem is that you need to initialize cost to zero before you start using it.
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