main.cpp (DailyC++) 7/20/12

///CODED BY AARGH(cplusplus.com)
///http://www.cplusplus.com/forum/beginner/75558/
#include <iostream>
#include <string>

using namespace std;
struct menuItemType
{
    string name;
    double price;
};

void GetData(menuItemType & menu, string name, double price)
{
    menu.name = name;
    menu.price = price;
}

void ShowMenu()
{
    cout << "(1) Plain Egg.............1.45\n"
            << "(2) Bacon and Egg....2.45\n"
            << "(3) Muffin..................0.99\n"
            << "(4) French Toast.......1.99\n"
            << "(5) Fruit Basket.........2.49\n"
            << "(6) Cereal.................0.50\n"
            << "(7) Tea......................0.75\n";
}

void printCheck(menuItemType& selection, double* total)
{
    *total += selection.price;
    cout << selection.name << " " << selection.price << endl;
}

int main()
{
    menuItemType menuList[50];
    cout << "Select up to 50 items by their menu numbers.  Press s then enter key to stop\n";
    int choice;
    int counter = 0; // used to ensure array does not run out of bounds
    double price; // price for each menu item added to the array
    double total = 0; // running total
    string name; // name for each menu item added to the array
    menuItemType * ptr_begin(menuList); // pointers will be used to manual figure out the size of the array (how many elements have valid values in them)
    menuItemType * ptr_end(menuList); // end pointer will iterate down the array to mark where the end would be

    ShowMenu();
    while (cin >> choice)
    {
        ShowMenu();
        if (choice == 1)
        {
            price = 1.45;
            name = "Plain Egg";
        }
        else if (choice == 2)
        {
            price = 2.45;
            name = "Bacon and Egg";
        }
        else if (choice == 3)
        {
            price = 0.99;
            name = "Muffin";
        }
        else if (choice == 4)
        {
            price = 1.99;
            name = "French Toast";
        }
        else if (choice == 5)
        {
            price = 2.49;
            name = "Fruit Basket";
        }
        else if (choice == 6)
        {
            price = 0.50;
            name = "Cereal";
        }
        else if (choice == 7)
        {
            price = 0.75;
            name = "Tea";
        }
        else // if user entered an improper selection number.
        {
            cout << "\n***Thats not a proper selection.  Please try again.***\n";
                continue;
        }
        GetData(menuList[counter], name, price);
        ptr_end += 1;
        ++counter;
        if (counter == 50) // user entered maximum selection of menu items.
            break;
    }
    if (ptr_begin != ptr_end) // if pointers point to different areas of array then we know user chose something to order and will display the bill.
    {
        cout << "\nYou selection consists of;\n";
        for (menuItemType * ptr_begin(menuList); ptr_begin != ptr_end; ptr_begin += 1)
        {
            printCheck(*ptr_begin, &total);
        }
        cout << "\nYour total bill including 5% tax will be: $";
        cout.precision(3);
        cout << total * 1.05 << endl;
    }
    cout << "\nThank you.  Come again.\n";
    char f; // use to prevent console from closing down.  may not work on MS visual C++ compiler for some reason.
    cin >> f;
    //system("pause"); //use for MS visual C++ to prevent console from closing down too fast.
    return 0;
}