Question

Complete the code to produce a compiling and working program. Route 66 Kaffeine Kicks is developing an automated ordering service. The system builds their menu and then asks the user for the drink and the size. It outputs a statement providing the users with the cost of their order.

Example output:

Route 66 Caffeine Kicks

latte
        venti   grande
        $3.21   $3.95

coffee
        venti   grande trenti
        $2.89   $3.45   $4.29

mocha
        venti   grande
        $3.45   $4.29

hot chocolate
        mini    venti   grande trenti
        $2.05   $2.89   $3.45   $4.29

What would you like to order?
mocha
What size?
grande
Your mocha will cost $4.29

#include <iostream>
#include <string>
#include <_______>

using namespace std;

class MenuItem
{
public:
    _______( string& name, const vector<string>& sizes, const & prices) :
        name_(name), sizes_(sizes), (prices) {}

    void Print()
    {
        cout << name_ << endl;
        for(string sz : sizes_)
        {
            cout << "\t" << sz;
        }
        cout << endl;
        for(double price : prices_)
        {
            cout << "\t$" << price;
        }
        cout << endl;
    }

    string getName()  { return name_; }

    bool getPrice(const string& size_str,_______  price)
    {
        bool found = false;
        for(unsigned int sz = 0; sz < sizes_._______(); sz++)
        {
            if(size_str == sizes_._______(sz))
            {
                price = prices_.at(sz);
                found = true;
            }
        }
        return found;
    }

private:
    const string name_;
    vector<string> sizes_;
    vector<double> prices_;
};

void PrintMenu(const vector<MenuItem>& menu)
{
    cout << "Route 66 Caffeine Kicks\n" << endl;
    for(MenuItem item : menu)
    {
        item.Print();
        cout << endl;
    }
}

bool PriceLookUp(const vector<MenuItem>& menu, const string& drink_name, const string& drink_size, double& price)
{
    bool found = false;
    for(unsigned int item = 0; item < menu.size(); item++)
    {
        if(drink_name == menu.at(item)._______())
        {
            MenuItem drink = menu.at(item);
            if(_______(drink_size, price))
            {
                found = _______ ;
            }
        }
    }
    return found;
}

int main()
{
     menu;

    MenuItem latte("latte", {"venti", "grande"}, {3.21, 3.95});
    menu.(latte);
    MenuItem coffee("coffee", {"venti", "grande", "trenti"}, {2.89, 3.45, 4.29});
    menu.push_back(coffee);
    MenuItem mocha("mocha", {"venti", "grande"}, {3.45, 4.29});
    menu.push_back(mocha);
    MenuItem coco("hot chocolate", {"mini", "venti", "grande", "trenti"}, {2.05, 2.89, 3.45, 4.29});
    menu.push_back();

    PrintMenu(menu);

    string drink_name, drink_size;
    cout << "What would you like to order?" << endl;
    cin >> drink_name;
    cout << "What size?" << endl;
    cin >> drink_size;

    double price;
    if(PriceLookUp(menu, drink_name, drink_size, price))
    {
        cout << "Your " << drink_name << " will cost $" << price << endl;
    }
    return 0;
}

Answer 1

Note: The modified part of the code is highlighted in bold and grey.

Screenshot of the code:

Sample Output:

Code to copy:

//Include required header files.

#include <iostream>

#include <string>

#include <vector>

//Use the standard naming convention.

using namespace std;

//Define the class MenuItem.

class MenuItem

{

//Define required public member variables.

public:

    MenuItem(string& name, const vector<string>& sizes,

    const vector<double>& prices) : name_(name),

    sizes_(sizes), prices_(prices) {}

    void Print()

    {

      cout << name_ << endl;

      for(string sz : sizes_)

      {

        cout << "\t" << sz;

      }

      cout << endl;

      for(double price : prices_)

      {

        cout << "\t$" << price;

      }

      cout << endl;

    }

    string getName()

    {

      return name_;

    }

    bool getPrice(const string& size_str, double& price)

    {

      bool found = false;

      for(unsigned int sz = 0; sz < sizes_.size(); sz++)

      {

        if(size_str == sizes_.at(sz))

        {

          price = prices_.at(sz);

          found = true;

        }

      }

      return found;

    }

//Declare required private member variables.

private:

    const string name_;

    vector<string> sizes_;

    vector<double> prices_;

};

//Define the method PrintMenu().

void PrintMenu(const vector<MenuItem>& menu)

{

//Display the menu using for each loop over the

//vector of objects of class MenuItem.

cout << "Route 66 Caffeine Kicks\n" << endl;

for(MenuItem item : menu)

{

    item.Print();

    cout << endl;

}

}

//Define the method PriceLookUp().

bool PriceLookUp(const vector<MenuItem>& menu,

const string& drink_name, const string& drink_size,

double& price)

{

//Declare and initialize required variable.

bool found = false;

//Traverse the vector of objects of class MenuItem

//using a for loop.

for(unsigned int item = 0; item < menu.size();

item++)

{

    //Get the current object from the vector.

    MenuItem drink = menu.at(item);

    //If the current object's drink name is matched

    //with the given drink name.

    if(drink_name == drink.getName())

    {

      //If the getPrice() method returns true, the

      //set found to true.

      if(drink.getPrice(drink_size, price))

      {

        found = true;

      }

    }

}

//Return the value of the variable found.

return found;

}

//Start the execution of the main() method.

int main()

{

//Declare required vectors, strings, and double

//variables.

vector<MenuItem> menu;

vector <string> size_of_drink;

vector <double> drink_price;

string drink_name, drink_size;

string drink = "";

double price;

//Fill the vector of drink size and drink prices.

size_of_drink.push_back("venti");

size_of_drink.push_back("grande");

drink_price.push_back(3.21);

drink_price.push_back(3.95);

drink = "latte";

//Pass the required values to the constructor.

MenuItem latte(drink, size_of_drink, drink_price);

//Add the object of MenuItem class to the vector.

menu.push_back(latte);

//Clear the vector of drink size and prices.

size_of_drink.clear();

drink_price.clear();

//Fill the vector of drink size and drink prices.

size_of_drink.push_back("venti");

size_of_drink.push_back("grande");

size_of_drink.push_back("trenti");

drink_price.push_back(2.89);

drink_price.push_back(3.45);

drink_price.push_back(4.29);

drink = "coffee";

//Pass the required values to the constructor.

MenuItem coffee(drink, size_of_drink, drink_price);

//Add the object of MenuItem class to the vector.

menu.push_back(coffee);

//Clear the vector of drink size and prices.

size_of_drink.clear();

drink_price.clear();

//Fill the vector of drink size and drink prices.

size_of_drink.push_back("venti");

size_of_drink.push_back("grande");

drink_price.push_back(3.45);

drink_price.push_back(4.29);

drink = "mocha";

//Pass the required values to the constructor.

MenuItem mocha(drink, size_of_drink, drink_price);

//Add the object of MenuItem class to the vector.

menu.push_back(mocha);

//Clear the vector of drink size and prices.

size_of_drink.clear();

drink_price.clear();

//Fill the vector of drink size and drink prices.

size_of_drink.push_back("mini");

size_of_drink.push_back("venti");

size_of_drink.push_back("grande");

size_of_drink.push_back("trenti");

drink_price.push_back(2.05);

drink_price.push_back(2.89);

drink_price.push_back(3.45);

drink_price.push_back(4.29);

drink = "hot chocolate";

//Pass the required values to the constructor.

MenuItem coco(drink, size_of_drink, drink_price);

//Add the object of MenuItem class to the vector.

menu.push_back(coco);

//Clear the vector of drink size and prices.

size_of_drink.clear();

drink_price.clear();

//Call the function PrintMenu() to display the

//required menu.

PrintMenu(menu);

//Prompt the user to enter the drink name and size.

cout << "What would you like to order?" << endl;

cin >> drink_name;

cout << "What size?" << endl;

cin >> drink_size;

//If the value returned by the function

//PriceLookUp() is true, then display the price of

//the drink selected.

if(PriceLookUp(menu, drink_name, drink_size,

price))

{

    cout << "Your " << drink_name << " will cost $";

    cout << price << endl;

}

return 0;

}