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Trouble with this program.

swordsaber (1)
Having some trouble with this C++ program.
I need to rewrite it so that the customer can select multiple items of the same type like:
1 Bacon and Egg $2.45
2 Muffin $1.98
1 Coffee $0.50
A muffin normally costs $0.99, but he ordered two. Right now you can only order one of each. Help would be appreciated!

The Original Assignment
Write a program to help a local restaurant automate its breakfast billing system.
The program should do the following:Show the customer the differnt breakfast items offered by the restaurant.
Allow the customer to slect more than one item from the menu.
Calculate and print the bill.
Assume that the restaurant offers the following breakfast items/prices:

Plain Egg $1.45
Bacon and Egg $2.45
Muffin 0.99
French Toast 1.99
Fruit Basket 2.49
Cereal 0.69
Coffee 0.50
Tea 0.75

Use an array menuList[] of the struct menuItemType, as defined in programming ex 3. Your program must contain at least the following functions: getData(): loads the data into the array menuList showMenu(): Shows the different items offered by the restaurant and tells the user how to select the items, printCheck(): calculates and prints the check
*Note - Bill includes 5% tax

Here's my code. 


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#include <iostream>
#include <iomanip>
#include <vector>
#include <string>

using namespace std;
	 
//struct for menuItemType
	struct menuItemType
	{
	    string menuItem;
	    double menuPrice;
	};
	void getData(menuItemType menuList[]);
	void showMenu(menuItemType menuList[], int x);
	void printCheck(vector <menuItemType> menuOrder);
	 
	int main()
	{
	 
	    // Declare functions and variables
	    const int menuItems = 8;
	    menuItemType menuList[menuItems];
	    vector< menuItemType > menuOrder;
	    int orderChoice = 0;
	    bool ordering = true;
	    int count = 0;
	    // Set the menu
	    getData(menuList);
	    // Order
	    showMenu(menuList, menuItems);
	    while(ordering)
	    {
	        cout << "Please enter the number for the item you would\n"
	             << "like to order, or enter [0] to complete your order."
	             << endl;
	        cin >> orderChoice;
	        if (orderChoice > 0 && orderChoice <= menuItems)
	        {
	            menuOrder.push_back(menuList[orderChoice-1]);
	        }
	        else
	            ordering = false;
	    }
	    printCheck(menuOrder);
	    return 0;
	}
	 
	void getData(menuItemType menuList[])
	{
	    // Declare menuItemTypes
	    menuItemType plainEgg;
	    menuItemType baconEgg;
	    menuItemType muffin;
	    menuItemType frenchToast;
	    menuItemType fruitBasket;
	    menuItemType cereal;
	    menuItemType coffee;
	    menuItemType tea;
	 
	    // Initialize menuItemTypes variables
	    plainEgg.menuItem = "Plain Egg";
	    plainEgg.menuPrice = 1.45;
	    baconEgg.menuItem = "Bacon and Egg";
	    baconEgg.menuPrice = 2.45;
	    muffin.menuItem = "Muffin";
	    muffin.menuPrice = 0.99;
	    frenchToast.menuItem = "French Toast";
	    frenchToast.menuPrice = 1.99;
	    fruitBasket.menuItem = "Fruit Basket";
	    fruitBasket.menuPrice = 2.49;
	    cereal.menuItem = "Cereal";
	    cereal.menuPrice = 0.69;
	    coffee.menuItem = "Coffee";
	    coffee.menuPrice = 0.50;
	    tea.menuItem = "Tea";
	    tea.menuPrice = 0.75;
	 
	    menuList[0] = plainEgg;
	    menuList[1] = baconEgg;
	    menuList[2] = muffin;
	    menuList[3] = frenchToast;
	    menuList[4] = fruitBasket;
	    menuList[5] = cereal;
	    menuList[6] = coffee;
	    menuList[7] = tea;
	}
	 
	void showMenu(menuItemType menuList[], int x)
	{
	    // Function variables
	    int count;
	 
	    cout << "Welcome to Bob Evans!" << endl;
	    cout << "What would you to order?" << endl;
	    for(count = 0; count < x; count++)
	    {
	        cout << setw(2) << left << "[" << count + 1 << "]"
	             << menuList[count].menuItem << '$'
	             << menuList[count].menuPrice << endl;
	    }
	}
	 
	void printCheck(vector<menuItemType> menuOrder)
	{
	    double checkTotal = 0;
	    double checkTax = 0;
	    const double TAX = .05;
	    cout << "Thanks for eating at Bob Evans!"
	         << "Customer check: " << endl;
	    for(int i = 0; i < menuOrder.size(); i++)
	    {
	        cout << setprecision(2) << setw(10) << left << menuOrder[i].menuItem
	             << '$' << menuOrder[i].menuPrice << endl;
	        checkTotal += menuOrder[i].menuPrice;
	    }
	    checkTax = checkTotal * TAX;
	    checkTotal += checkTax;
	    cout << setw(14) << left << "Tax" << checkTax << endl
	         << setw(14) << left << "Total" << checkTotal << endl;
	}
Last edited on
Rehan FASTian (168)
What's wrong with this program? Where is trouble?
Bourgond Aries (415)
Use an (Correct grammar imho because I pronounce "es-tee-dee": http://owl.english.purdue.edu/owl/resource/540/01/) std::vector<menuItemType> to store multiple instances, then iterate over the vector and for each item, increment the price by the amount that the item stored.
Carm (18)
I didn't see that you were required to us a vector, so I changed the vector to an array, and the setprecision in printCheck to 3

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#include <iostream>
#include <iomanip>
#include <vector>
#include <string>

using namespace std;
	 
//struct for menuItemType
	struct menuItemType
	{
	    string menuItem;
	    double menuPrice;
	};
	void getData(menuItemType menuList[]);
	void showMenu(menuItemType menuList[], int x);
	void printCheck(menuItemType menuList[], int menuOrder[], int x);
	 
	int main()
	{
	 
	    // Declare functions and variables
	    const int menuItems = 8;
	    menuItemType menuList[menuItems];
		int menuOrder[menuItems] = {0};
	    int orderChoice = 0;
	    bool ordering = true;
	    int count = 0;
	    // Set the menu
	    getData(menuList);
	    // Order
	    showMenu(menuList, menuItems);
	    while(ordering)
	    {
	        cout << "Please enter the number for the item you would\n"
	             << "like to order, or enter [0] to complete your order."
	             << endl;
	        cin >> orderChoice;
	        if (orderChoice > 0 && orderChoice <= menuItems)
	        {
	            menuOrder[orderChoice - 1] += 1;
	        }
	        else
	            ordering = false;
	    }
	    printCheck(menuList, menuOrder, menuItems);
		cin.ignore(2);
	    return 0;
	}
	 
	void getData(menuItemType menuList[])
	{
	    // Declare menuItemTypes
	    menuItemType plainEgg;
	    menuItemType baconEgg;
	    menuItemType muffin;
	    menuItemType frenchToast;
	    menuItemType fruitBasket;
	    menuItemType cereal;
	    menuItemType coffee;
	    menuItemType tea;
	 
	    // Initialize menuItemTypes variables
	    plainEgg.menuItem = "Plain Egg";
	    plainEgg.menuPrice = 1.45;
	    baconEgg.menuItem = "Bacon and Egg";
	    baconEgg.menuPrice = 2.45;
	    muffin.menuItem = "Muffin";
	    muffin.menuPrice = 0.99;
	    frenchToast.menuItem = "French Toast";
	    frenchToast.menuPrice = 1.99;
	    fruitBasket.menuItem = "Fruit Basket";
	    fruitBasket.menuPrice = 2.49;
	    cereal.menuItem = "Cereal";
	    cereal.menuPrice = 0.69;
	    coffee.menuItem = "Coffee";
	    coffee.menuPrice = 0.50;
	    tea.menuItem = "Tea";
	    tea.menuPrice = 0.75;
	 
	    menuList[0] = plainEgg;
	    menuList[1] = baconEgg;
	    menuList[2] = muffin;
	    menuList[3] = frenchToast;
	    menuList[4] = fruitBasket;
	    menuList[5] = cereal;
	    menuList[6] = coffee;
	    menuList[7] = tea;
	}
	 
	void showMenu(menuItemType menuList[], int x)
	{
	    // Function variables
	    int count;
	 
	    cout << "Welcome to Bob Evans!" << endl;
	    cout << "What would you to order?" << endl;
	    for(count = 0; count < x; count++)
	    {
	        cout << setw(2) << left << "[" << count + 1 << "]"
	             << menuList[count].menuItem << '$'
	             << menuList[count].menuPrice << endl;
	    }
	}
	 
	void printCheck(menuItemType menuList[], int menuOrder[], int menuItems)
	{
	    double checkTotal = 0;
	    double checkTax = 0;
	    const double TAX = .05;
	    cout << "Thanks for eating at Bob Evans!"
	         << "Customer check: " << endl;
	    for(int i = 0; i < menuItems; i++)
	    {
			if(menuOrder[i] > 0) {
				cout << setprecision(3) << setw(10) << left << menuList[i].menuItem
					 << '$' << (menuList[i].menuPrice * menuOrder[i]) << endl;
				checkTotal += (menuList[i].menuPrice * menuOrder[i]);
			}
	    }
	    checkTax = checkTotal * TAX;
	    checkTotal += checkTax;
	    cout << setw(14) << left << "Tax" << checkTax << endl
	         << setw(14) << left << "Total" << checkTotal << endl;
	}


works for me
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