Can Anyone tell me what Im doing wrong?

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

using namespace std;


class menuItemType 
{
public:
	menuItemType();
	~menuItemType();
	void accessData();
private:
	void getData(menuItemType item[], ofstream& outData);
	void showMenu(menuItemType item[], ofstream& outData);
	void printCheck (double& total, double& tax, double& totalF, ofstream& outData);
    string itemName;
    double itemCost;
};

menuItemType :: menuItemType()
{
	getData(menuItemType item[], ofstream& outData);
}
menuItemType :: ~menuItemType()
{
	printCheck (double& total, double& tax, double& totalF, ofstream& outData);
}
int main()
{

ofstream outData;
outData.open("OutMenu.txt");
				

cout<< "                  Welcome!                 " << endl;
cout<< "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" << endl;
cout<< "  *To select an Item from the list below,  " << endl;
cout<< "just indicate the Item number for the item \n\n" << endl;
				

outData << "                  Welcome!                 " << endl;
outData << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" << endl;
outData << "  *To select an Item from the list below,  " << endl;
outData<< "just indicate the Item number for the item \n\n" << endl;

menuItemType a;
a.accessData();



    system("pause");

    return 0;

}

void menuItemType :: getData(menuItemType item[], ofstream& outData)
{
    int i=0;
    ifstream inData;
    inData.open("InMenu.txt");
    cout << fixed << setprecision(2);
	outData << fixed << setprecision(2);


    while(!inData.eof()) 
	{
        inData >> item[i].itemName >> item[i].itemCost;
        ++i;
    }

}

void menuItemType :: showMenu(menuItemType item[],ofstream& outData) 
{
	int choice = 0;
    double total = 0.0, totalF = 0.0, tax = 0.0;
    char exit = 'y';
    int j = 1, z = 1, i = 1;

    //the Menu
    for (int i=0; i< 8; i++)
	{
        cout << j << ". " << setw(18) << left << item[i].itemName << "$" << setw(10) << item[i].itemCost << endl;
		outData << j << ". " << setw(18) << left << item[i].itemName << "$" << setw(10) << item[i].itemCost << endl;
		j++;
		
    }

    cout << endl;

    while(exit == 'y' || exit == 'Y')
	{

        cout << "Please Enter your Selection or 0 to Exit : ";
        cin >> choice;

        if(cin.fail()) 
		{
            cout << "~~~~~~~~~Invalid selection~~~~~~~~~" << endl;
            cin.clear();
            cin.ignore(1000,'\n');
        } 
		else if (choice==0) {break;}
            else 
			{
                choice--;
                total += (item[choice].itemCost);
                tax = (total * .05);
                totalF = total + tax;
                cout << endl;
				outData << endl;
            }
            cout << endl;
			outData << endl;

            cout << item[choice].itemName << " " << item[choice].itemCost << endl;
            cout << "======================================================" << endl;
            cout << "Do you want to continue (Y/N): ";
			outData << item[choice].itemName << " " << item[choice].itemCost << endl;
            outData << "======================================================" << endl;
            outData << "Do you want to continue (Y/N): ";
            cin >> exit;

        }
	printCheck(total, tax, totalF, outData);
}
void menuItemType :: accessData()
{
	showMenu();

}
void menuItemType ::  printCheck(double& total, double& tax, double& totalF, ofstream& outData)
 {
     cout << "\n\nThanks for Dinning With Us!" << endl;
	 cout << "<><><><><><><><><><><><><><>\n" << endl;
	 cout << "Customer Receipt            " << endl;
	 cout << "SubTotal:               $" << total <<endl;
	 cout << "Tax:                    $" << tax << endl;
	 cout << "                        -----" << endl;
	 cout << "Total:                  $" << totalF << endl;
	 cout << "Please Come Again!" << endl;

	 outData << "\n\nThanks for Dinning With Us!" << endl;
	 outData << "<><><><><><><><><><><><><><>\n" << endl;
	 outData << "Customer Receipt            " << endl;
	 outData << "SubTotal:               $" << total <<endl;
	 outData << "Tax:                    $" << tax << endl;
	 outData << "                        -----" << endl;
	 outData << "Total:                  $" << totalF << endl;
	 outData << "Please Come Again!" << endl;
 }