Write a program to help a local restaurant automate its breakfast billing system. The program should do the following:  Show the customer the different breakfast items offered by the restaurant.  Allow the customer to select more than one item from the menu.  Calculate and print the bill.

Assigment #1 Q#3

Write a program to help a local restaurant automate its breakfast billing system. The 
program should do the following:
  Show the customer the different breakfast items offered by the restaurant.
  Allow the customer to select more than one item from the menu.
  Calculate and print the bill.
Assume that the restaurant offers the following breakfast items (the price of each item is shown 
to the right of the item):
                                                   Plain Egg           RS 15.00
                                                   Omelet    RS 15.00
                                                   Paratha             RS 12.00
                                                   French Toast    RS 20.99
                                                   Fruit Basket    RS 120.49 
                                                   Coffee    RS   50.00
                                                   Tea    RS 20.00
Use an array, menuList, of the struct menuItemType, as defined in Programming Exercise 2. Your 
program must contain at least the following functions:
  Function getData: This function loads the data into the array menuList.
  Function showMenu: This function shows the different items offered by the restaurant and 
tells the user how to select the items.
  Function printCheck: This function calculates and prints the check.
(Note that the billing amount should include a 17% tax.)
A sample output is:
------Welcome to Café international-----
1     Plain Egg          RS 15.00
2     Paratha           RS 24.00
1    Coffee              RS  50.00
                 Tax    RS   6.83
-----------------------------------------------
Amount due      RS 95.83
------------------------------------------------
Format your output with two decimal places. The name of each item in the output must be left 
justified. You may assume that the user selects only one item of a particular type

#include<iostream>

#include<string>

#include <iomanip>

using namespace std;

struct menuitem //defintion of a struct to store data about resturant

{

       string menulist;

       double price;

};

menuitem menu[8]; //Instance of a struct to store data of 7 resturant items

void getdata(); //prototype of a function to loads data about the items in struct

void showdata(); // prototype of a function show the loaded data

void selectItems(); //prototype of a function  to select the items

void cal(); //prototype of a function to calculate the bill

int c[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };

int main()

{

       double t;

       getdata(); //Calling of a function to get load the data

       showdata();//calling of a function to display data

       selectItems(); //calling of a function select the items from the menu

       cal(); //calling of a function to calculate the bill

       //system("pause");

       return 0;

}

void getdata() //a function to get load the data

{

       menu[1].menulist = "Plain Egg";

       menu[1].price = 15.00;

       menu[2].menulist = "Omelet";

       menu[2].price = 15.00;

       menu[3].menulist = "Paratha";

       menu[3].price = 12.00;

       menu[4].menulist = "French Toast";

       menu[4].price = 20.99;

       menu[5].menulist = "Fruit Basket";

       menu[5].price = 120.49;

       menu[6].menulist = "Coffee";

       menu[6].price = 50.00;

       menu[7].menulist = "Tea";

       menu[7].price = 20.00;

}

void showdata() //a function to display menu

{

       cout << "Breakfast items offered by the restaurant are" << endl;

       cout << 1 << "\t" << menu[1].menulist << setw(12) << "RS " << menu[1].price << endl;

       cout << 2 << "\t" << menu[2].menulist << setw(15) << "RS " << menu[2].price << endl;

       cout << 3 << "\t" << menu[3].menulist << setw(14) << "RS " << menu[3].price << endl;

       cout << 4 << "\t" << menu[4].menulist << setw(9) << "RS " << menu[4].price << endl;

       cout << 5 << "\t" << menu[5].menulist << setw(9) << "RS " << menu[5].price << endl;

       cout << 6 << "\t" << menu[6].menulist << setw(15) << "RS " << menu[6].price << endl;

       cout << 7 << "\t" << menu[7].menulist << setw(18) << "RS " << menu[7].price << endl;

}

void selectItems() //function select the items from the menu

{

       int ch,quantity;

       char con;

       do{

              cout << "Enter your choice :";

              cin >> ch; //takes the choice from the user to select the item

              cout << "Enter the Quantity :";

              cin >> quantity;

              switch (ch)

              {

              case 1:

              {

                     c[1] = c[1] + quantity;

                     cout << "You have Selected :" << menu[1].menulist << endl;

                     break;

              }

              case 2:

              {

                     c[2] = c[2] + quantity;

                     cout << "You have Selected :" << menu[2].menulist << endl;

                     break;

              }

              case 3:

              {

                     c[3] = c[3] + quantity;

                     cout << "You have Selected :" << menu[3].menulist << endl;

                     break;

              }

              case 4:

              {

                     c[4] = c[4] + quantity;

                     cout << "You have Selected :" << menu[4].menulist << endl;

                     break;

              }

              case 5:

              {

                     c[5] = c[5] + quantity;

                     cout << "You have Selected :" << menu[5].menulist << endl;

                     break;

              }

              case 6:

              {

                     c[6] = c[6] + quantity;

                     cout << "You have Selected :" << menu[6].menulist << endl;

                     break;

              }

              case 7:

              {

                     c[7] = c[7] + quantity;

                     cout << "You have Selected :" << menu[7].menulist << endl;

                     break;

              }

              default:

                     cout << "invalid input" << endl;

              }

              cout << "to select more items (y/n)";

              cin >> con;

       } while (con != 'n');

       cout << endl;

}

void cal()

{

       double total = 0, tax, due;

       cout << "------Welcome to Café international-----" << endl;

       for (int i = 1; i < 8; i++)

       {

              if (c[i] > 0)

              {

                     cout << c[i] << "\t" << menu[i].menulist << "   RS " << menu[i].price << endl;

                     total = total + (menu[i].price*c[i]);

              }

       }

       tax = total*0.17; //calculate the tax on the total price

       due = total + tax; //calculate the price after adding tax

       cout << "        Tax " << "\t" << tax << endl;

       cout << "-----------------------------------------------" << endl;

       cout << "Amount due      RS " << due << endl;

       cout << "-----------------------------------------------" << endl;

}