Calling class ASAP

[josephhoffman28]

So I am trying to figure out how to call line 41 to function on line 105 after you make your selection it should display Selection: name, price per unit: $price

I need to know how to do this so each time you select it to display this so, for example, hit 1 for water Selection: Water, price per unit: $1.45 then it should ask for quantity.

Also my Order summary is not working properly it displays nothing instead of all the choices and totals.

  #include <iostream>
#include <string>
#include <iomanip>
#include <sstream> // stringstream
#include <cctype> // isalph, isdigit

class Customer {
	const std::string custName, custAddress;
public:
	void custInfo(std::ostream &) const
	{
		
	}
	void custWelcome(std::ostream &) const
	{
		std::cout << "\nHello " << custName << "\nAddress: " << custAddress << std::endl;
	}
	std::string custValue() const
	{
		return custName;
	}

	Customer(const std::string &inputCustName, const std::string &inputCustAddress)
		: custName(inputCustName), custAddress(inputCustAddress)
	{
	}
};

struct Beverage {
	const std::string name;
	double price;

	void bevInfo(std::ostream &) const
	{
		std::cout << "Name" << name << "\n"
			<< "Price" << "$" << price << "\n"
			<< "Total" << "$" << std::endl;
	}
	void bevSelect(std::ostream &) const
	{
		std::cout << "Selection: " << name << ", price per unit: $" << price << std::endl;
	}
	Beverage(const std::string &bevName, double bevPrice)
		: name(bevName), price(bevPrice)
	{
	}
};


const int AVAILABLE_PRODUCTS_COUNT = 3;
const Beverage AVAILABLE_PRODUCTS[AVAILABLE_PRODUCTS_COUNT] = {
	Beverage("Water", 1.45), // Element 0
	Beverage("Soda", 2.98), // Element 1
	Beverage("Ice Tea", 3.29) // Element 2
};

typedef int Quantities[AVAILABLE_PRODUCTS_COUNT];
Quantities ordered = { 0 };

double totalCost(Quantities);
void orderSummary(Quantities);
char getCharFromUser(const std::string &prompt);
Customer getCustomerFromUser();
void displayMenu(const Customer &);
void loadProductQuantity(const Beverage &, Quantities);
void doneShowOrder(const Customer &, Quantities);

double totalCost(Quantities beverageCount)//Cost loop
{
	double totalCost = 0;

	for (int i = 0; i < AVAILABLE_PRODUCTS_COUNT; i++) {
		totalCost += (beverageCount[i] * AVAILABLE_PRODUCTS[i].price);
	}
	return totalCost;

}

void loadProductQuantity(int beverageNumber, int quantity)
{
	ordered[beverageNumber] = quantity;
}

void doneShowOrder(const Customer &, Quantities)
{
	orderSummary(ordered);
}

void displayMenu(const Customer &prompt)
{
	std::cout << std::endl << std::endl
		<< prompt.custValue()
		<< ", Please select the beverage you would like to purchase from the menu: "
		<< std::endl;

	std::cout << "Drink Menu" << std::endl;
	std::cout << "========" << std::endl;
	std::cout << "1 - Water $1.45" << std::endl;
	std::cout << "2 - Soda $2.98" << std::endl;
	std::cout << "3 - Iced Tea $3.29" << std::endl;
	std::cout << "X - Exit " << std::endl << std::endl;
}


char getCharFromUser(const std::string &prompt)
{
	char key;

	std::cout << "Selection: ";

	std::cin >> key;

	return key;
}


Customer getCustomerFromUser()
{
	std::string custName;
	std::string custAddress;
	std::cout << "Please enter your name ==> ";
	std::getline(std::cin, custName);
	std::cout << "Please enter your address ==> ";
	std::getline(std::cin, custAddress);

	return Customer(custName, custAddress);
}

int main(void) {
	Customer patron = getCustomerFromUser();
	patron.custWelcome(std::cout);
	patron.custInfo(std::cout);

	bool done = false;
	while (!done) {
		int amountOrdered = 0;
		displayMenu(patron);
		switch (getCharFromUser("Your selection: ")) {
		case '1':
			std::cout << "Please chose a quantiy: ";
			std::cin >> amountOrdered;
			loadProductQuantity(0, amountOrdered);
			break;
		case '2':
			std::cout << "Please chose a quantiy: ";
			std::cin >> amountOrdered;
			loadProductQuantity(1, amountOrdered);
			break;
		case '3':
			std::cout << "Please chose a quantiy: ";
			std::cin >> amountOrdered;
			loadProductQuantity(2, amountOrdered);
			break;
		case 'X': case 'x':
			done = true;
			break;
		default:
			std::cout << "Invalid selection. Please try again";
			std::cin.get();
			// no break in the default case
		}
	}
	doneShowOrder(patron, ordered);
	std::cout << "Press any key to exit." << std::endl;
	char blah;
	std::cin >> blah;
	return 0;
}

void orderSummary(Quantities ordered) {
	std::cout << std::endl;
	std::cout << "======= ORDER SUMMARY ====" << std::endl;
	std::cout << "Items selected" << std::endl;
	for (int i = 0; i < AVAILABLE_PRODUCTS_COUNT; i++) {
		// only show beverages that has at least one order
		if (ordered[i] > 0) {
			std::cout << "You selcted: " << std::endl;
		}
	}
}

[MikeyBoy]

So I am trying to figure out how to call line 41 to function on line 105 after you make your selection it should display Selection: name, price per unit: $price

getCharFromUser() is a free function, so you can just call it from within Beverage::bevSelect(), if that's what you're asking.

Or do you want it the other way around - that whenever you call getCharFromUser(), you want it to call Beverage::bevSelect()?

[josephhoffman28]

Other way around so basically what I need is everytime you make a selection it will show you the selection, price per unit

The program should run like this:

Please enter your name ==> 'Joseph'
Please enter your address ==> 'Here'

Hello Joseph
Address: Here

Joseph, Please select the beverage you would like to purchase from the menu:

Drink Menu
========
1 - Water $1.45
2 - Soda $2.98
3 - Iced Tea $3.29
X - Exit

Selection: '1'

Selection: Water, price per unit: $1.45 //It is not doing this step
Please chose a quantity:

That is the only thing missing so each time you make a selection it should say and the price per unit.

[keskiverto]

You want to show something after the user has made a selection, but before you ask for quantity?

Where is that point in your code?

[MikeyBoy]

Once you have the user's selection, you'll need to:

1. find some way to identify which of the elements in the AVAILABLE_PRODUCTS array corresponds to the user's selection
2. call the bevSelect() method of that element.

[keskiverto]

Speaking of bevSelect() ...

I see that these four functions all take parameter of type std::ostream&:

void Customer::custInfo( std::ostream& ) const
void Customer::custWelcome( std::ostream& ) const
void Beverage::bevInfo( std::ostream& ) const
void Beverage::bevSelect( std::ostream&) const

There is surely some reason for that?