C++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:-1the output is:.cpp#include "ListItem. h"#include #include #include using namespace std;int main (int argc, char* argv[]) {// TODO: Declare a list called shoppingList of type ListItemstring 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() functionreturn 0;}ListItem. h#ifndef LISTITEMH#define LISTITEMH#include using namespace std;class ListItem {public:ListItem();ListItem(string itemInit);// Print this nodevoid PrintNodeData();private:string item;};#endifListItem. cpp#include "ListItem. h"#include ListItem::ListItem() {item = "";}ListItem::ListItem(string itemInit) {item = itemInit;}// Print this nodevoid ListItem::PrintNodeData() {cout << item << endl;}