Grocery Shopping List $($list$)$

Given a ListItem class, complete main$()$ using the built$-$in list type to create a linked list called shoppingList. The program should read items from input $($ending with $-1),$ adding each item to shoppingList, and output each item in shoppingList using the PrintNodeData$()$ function.

Ex$.$ If the input is:

milk

bread

eggs

waffles

cereal

$-1$

the output is:

milk

bread

eggs

waffles

cereal

Here are the contents of ListItem.h:

#ifndef LISTITEMH

#define LISTITEMH

#include

using namespace std;

class ListItem $\{$

public:

ListItem$()$;

ListItem$($string itemInit$)$;

$//$ Print this node

void PrintNodeData$()$;

private:

string item;

$\}$;

#endif

Here are the contents of ListItem.cpp:

#include "ListItem.h$"$

#include

ListItem::ListItem$()\{$

item $=""$;

$\}$

ListItem::ListItem$($string itemInit$)\{$

item $=$ itemInit;

$\}$

$//$ Print this node

void ListItem::PrintNodeData$()\{$

cout $<<$ item $<<$ endl;

$\}$

Use this as a template for your file, a$2\mathrm{.}1.$cpp:

#include "ListItem.h$"$

#include

#include

#include

using namespace std;

int main $()\{$

$//$ TODO: Declare a list called shoppingList of type ListItem

string item;

$//$ TODO: Read inputs $($items$)$ and add them to the shoppingList list

$//$ Read inputs until a $-1$ is input

$//$ TODO: Print the shoppingList list using the PrintNodeData$()$ function

$\}$