Adding Choice From a Menu (Arrays, Structs)

[megsandbacon]

I need to write a program with a restaurant menu that allows users to choose more than one of an item. How do I add their choices to their order? AKA what should I put in the if (menuchoice ==1) spot?

  #include <iostream>
#include <fstream>
#include <iomanip>
#include <string>

using namespace std;

const int NUMITEMS = 8;
const double TAX = .05;

struct menuItemType
{
	string item;
	double price;
	int quant;
};
 
/*****
Function: getData
Preconditon: none
Postcondition: gets menu data from a file
Date Coded: 4/25/14
*****/
void getData (ifstream& fin, menuItemType menu[], int& numItems);

/*****
Function: showMenu
Precondition: getData
Postcondition: shows items and allows selection
Date Coded: 4/25/14
*****/
int mymenu();

/*****
Function: printCheck
Precondition: getdata
Postcondition: calculates tax and prints check
Date Coded: 4/25/14
*****/
double printCheck (TAX);

int main ()
{
	menuItemType menu[NUMITEMS];
	menuItemType order[NUMITEMS];
	int numItems = 0, menuchoice;
	ifstream fin;
	ofstream fout;

	fin.open("menu.txt");

	getData (fin, menu, numItems);
	cout << "Welcome to Johnny's Restaurant" << endl;

	do 
	{
		menuchoice = mymenu();

		if (menuchoice == 1)
		{
			
		}

	}while (menuchoice != 9);
	
	return 0;
}

void getData (ifstream& fin, menuItemType menu[], int& numItems)
{
	do
	{
		getline(fin, menu[numItems].item);
		fin >> menu[numItems].price;
		fin.get();
		numItems++;
	}
	while (!fin.eof());
	return;
}

int mymenu()
{
	int choice;
	cout << left << "1. Plain Egg" << right << setw(5) << "$1.45" << endl
		 << left << "2. Bacon and Egg" << right << setw(5) << "$2.45" << endl
		 << left << "3. Muffin" << right << setw(5) << "$0.99" << endl
		 << left << "4. French Toast" << right << setw(5) << "$1.99" << endl
		 << left << "5. Fruit Basket" << right << setw(5) << "$2.49" << endl
		 << left << "6. Cereal" << right << setw(5) << "$0.69" << endl
		 << left << "7. Coffee" << right << setw(5) << "$0.50" << endl
		 << left << "8. Tea" << right << setw(5) << "$0.75" << endl
		 << left << "9. Exit Menu" << endl;
	cin >> choice;
	return choice;
}