Final With Bug

#include <iostream>
#include <cstdio>
#include <stdlib.h>
#include <conio.h>
#include <string>
using namespace std;

int cnt, choice, quanchoice, totalcost, customerid = 1000;

bool passcheck()
{
    string password;
    char takepass;
    printf("\n\tPlease Enter The Password (Maximum Length 8): ");
    takepass = _getch();
    while (takepass != 13)
    {
        password.push_back(takepass);
        printf("*");
        takepass = _getch();
    }
    if (password == "1234")
        return true;
    else
        return false;
}

struct item
{
    string name;
    int price;
    int quantity;
    struct item *nextsnacks;
    struct item *nextmeals;
    struct item *nextdrinks;
    struct item *nextitem;
}*snacksvariable, *mealsvariable, *drinksvariable, *snackstemp, *mealstemp, *drinkstemp, *itemvariable, *itemtemp;

struct head
{
    int counter;
    struct item *pointer;
}*sheadvariable, *mheadvariable, *dheadvariable, *iheadvariable;

void creat(string putname, int putprice, int putcategory)
{
    if (putcategory == 1)
    {
        snacksvariable = (struct item*) malloc(sizeof (struct item));
        snacksvariable -> name = putname;
        snacksvariable -> price = putprice;
        snacksvariable -> quantity = 10;
        snacksvariable -> nextsnacks = NULL;
        sheadvariable -> counter++;

        if (sheadvariable -> counter != 1)
            snacksvariable -> nextsnacks = sheadvariable -> pointer;
        sheadvariable -> pointer = snacksvariable;

        printf("\n\t== Successfully Added a New Snacks Item ==\n");
    }

    else if (putcategory == 2)
    {
        mealsvariable = (struct item*) malloc(sizeof (struct item));
        mealsvariable -> name = putname;
        mealsvariable -> price = putprice;
        mealsvariable -> quantity = 10;
        mealsvariable -> nextmeals = NULL;
        mheadvariable -> counter++;

        if (mheadvariable -> counter != 1)
            mealsvariable -> nextmeals = mheadvariable -> pointer;
        mheadvariable -> pointer = mealsvariable;
        printf("\n\t== Successfully Added a New Meals Item ==\n");
    }

    else if (putcategory == 3)
    {
        drinksvariable = (struct item*) malloc(sizeof (struct item));
        drinksvariable -> name = putname;
        drinksvariable -> price = putprice;
        drinksvariable -> quantity = 10;
        drinksvariable -> nextdrinks = NULL;
        dheadvariable -> counter++;

        if (dheadvariable -> counter != 1)
            drinksvariable -> nextdrinks = dheadvariable -> pointer;
        dheadvariable -> pointer = drinksvariable;
        printf("\n\t== Successfully Added a New Drinks Item ==\n");
    }

    else if (putcategory == 4)
    {
        itemvariable = (struct item*) malloc(sizeof(struct item));
        itemvariable -> name = putname;
        itemvariable -> price = putprice*quanchoice;
        itemvariable -> quantity = quanchoice;
        itemvariable -> nextitem = NULL;
        iheadvariable -> counter++;

        if (iheadvariable -> counter != 1)
            itemvariable -> nextitem = iheadvariable -> pointer;
        iheadvariable -> pointer = itemvariable;
    }
}

void display(int choice)
{
    if (choice == 1)
        printf("\n\t\t\t\t=== Snacks ===\n");
    else if (choice == 2)
        printf("\n\t\t\t\t=== Meals ===\n");
    else if (choice == 3)
        printf("\n\t\t\t\t=== Drinks ===\n");
    printf("\t-----------------------------------------------------------\n");
    printf("\t No.\tName\t\t\tPrice\t\tQuantity\n");
    printf("\t-----------------------------------------------------------\n");
    int number = 0;
    if (choice == 1)
    {
        snackstemp = sheadvariable -> pointer;
        while (snackstemp != NULL)
        {
            number++;
            printf("\t %d.",number);
            cout << "\t" << snackstemp -> name;
            printf("\t\t %d\t\t   %d\n",snackstemp -> price, snackstemp -> quantity);
            snackstemp = snackstemp -> nextsnacks;
        }
        printf("\t-----------------------------------------------------------\n");
    }

    else if (choice == 2)
    {
        mealstemp = mheadvariable -> pointer;
        while (mealstemp != NULL)
        {
            number++;
            printf("\t %d.",number);
            cout << "\t" << mealstemp -> name;
            printf("\t\t %d\t\t   %d\n",mealstemp -> price, mealstemp -> quantity);
            mealstemp = mealstemp -> nextmeals;
        }
        printf("\t-----------------------------------------------------------\n");
    }

    else if (choice == 3)
    {
        drinkstemp = dheadvariable -> pointer;
        while (drinkstemp != NULL)
        {
            number++;
            printf("\t %d.",number);
            cout << "\t" << drinkstemp -> name;
            printf("\t\t %d\t\t   %d\n",drinkstemp -> price, drinkstemp -> quantity);
            drinkstemp = drinkstemp -> nextdrinks;
        }
        printf("\t-----------------------------------------------------------\n");
    }

    else if (choice == 4)
    {
        itemtemp = iheadvariable -> pointer;
        while (itemtemp != NULL)
        {
            number++;
            printf("\t %d.",number);
            cout << "\t" << itemtemp -> name;
            printf("\t\t %d\t\t   %d\n",itemtemp -> price, itemtemp -> quantity);
            itemtemp = itemtemp -> nextitem;
        }
        printf("\t-----------------------------------------------------------\n");
    }
}

traverse (struct item *temp, int take, int option, int catagory)
{
    if (temp != NULL)
    {
        cnt++;
        if (cnt == take)
        {
            if (option == 1)
            {
                int takequantity;
                printf("\n\tEnter Your Updated Quantity: ");
                scanf("%d",&takequantity);
                temp -> quantity = takequantity;
                printf("\n\t== Successfully Updated The Quantity ==\n");
            }

            else if (option == -1)
            {
                int newprice;
                printf("\n\tEnter The New Price: ");
                scanf("%d",&newprice);
                temp -> price = newprice;
                printf("\n\t== Successfully Revise The Price ==\n");
            }

            else if (option == 2)
            {
                if (catagory == 1)
                {
                    snackstemp = temp -> nextsnacks;
                    temp -> nextsnacks = snackstemp -> nextsnacks;
                    free(snackstemp);
                    sheadvariable -> counter --;
                    printf("\n\t== Successfully Removed An Item ==\n");
                }

                else if (catagory == 2)
                {
                    mealstemp = temp -> nextmeals;
                    temp -> nextmeals = mealstemp -> nextmeals;
                    free(mealstemp);
                    mheadvariable -> counter --;
                    printf("\n\t== Successfully Removed An Item ==\n");
                }

                else if (catagory == 3)
                {
                    drinkstemp = temp -> nextdrinks;
                    temp -> nextdrinks = drinkstemp -> nextdrinks;
                    free(drinkstemp);
                    dheadvariable -> counter --;
                    printf("\n\t== Successfully Removed An Item ==\n");
                }

                else if (catagory == 4)
                {
                    itemtemp = temp -> nextitem;
                    temp -> nextitem = itemtemp -> nextitem;
                    free(itemtemp);
                    iheadvariable -> counter --;
                    printf("\n\t== Successfully Removed An Item ==\n");
                }
            }

            else if (option == -2)
            {
                totalcost = totalcost + ((temp -> price) * quanchoice);
                temp -> quantity -= quanchoice;
                creat(temp -> name, temp -> price, 4);
            }
        }
        if (catagory == 1)
            traverse (temp -> nextsnacks, take, option, catagory);
        else if (catagory == 2)
            traverse (temp -> nextmeals, take, option, catagory);
        else if (catagory == 3)
            traverse (temp -> nextdrinks, take, option, catagory);
        else if (catagory == 4)
            traverse (temp -> nextitem, take, option, catagory);
    }
}

int main()
{
    sheadvariable = (struct head*) malloc(sizeof (struct head));
    sheadvariable -> counter = 0;
    sheadvariable -> pointer = NULL;

    mheadvariable = (struct head*) malloc(sizeof (struct head));
    mheadvariable -> counter = 0;
    mheadvariable -> pointer = NULL;

    dheadvariable = (struct head*) malloc(sizeof (struct head));
    dheadvariable -> counter = 0;
    dheadvariable -> pointer = NULL;

    printf("\n\t*************** WELCOME TO THE SUPER RESTURENT ***************\n");
    printf("\t--------------------------------------------------------------\n");

    mainmenu:

    iheadvariable = (struct head*) malloc(sizeof (struct head));
    iheadvariable -> counter = 0;
    iheadvariable -> pointer = NULL;

    int user_choice;
    string password;
    char takepass;

    printf("\nUsers:\n");
    printf("\t1 = Admin\n\t2 = Customer\n\t0 = Exit\n\n");
    printf("\tYour Choice: ");
    scanf("%d",&user_choice);

    if (user_choice == 1)
    {
        if (passcheck() == true)
        {
            printf("\n\n");
            adminlevel:
            int adminchoice, takecategory, takenumber;
            printf("\t1 = Add a New Item.\n");
            printf("\t2 = Update Some Quantity.\n");
            printf("\t3 = Revise Some Price.\n");
            printf("\t4 = Remove Some Item.\n");
            printf("\t5 = Display The Menu.\n");
            printf("\t6 = Return Main Menu.\n");
            printf("\n\tEnter Your Choice: ");
            scanf("%d",&adminchoice);

            if (adminchoice == 1)
            {
                int take, tempprice;
                string tempname;
                printf("\nCategories:\n");
                printf("\t1 = Snacks\n");
                printf("\t2 = Meal\n");
                printf("\t3 = Drinks\n");
                printf("\n\tSelect a Category: ");
                scanf("%d",&take);
                cin.ignore();
                printf("\n\tPlease Enter The Name of This Item: ");
                getline(cin, tempname);
                printf("\n\tPlease Enter The Price: ");
                scanf("%d",&tempprice);
                creat(tempname, tempprice, take);
            }

            else if (adminchoice == 2 || adminchoice == 3 || adminchoice == 4)
            {
                printf("\nCategories:\n");
                printf("\t1 = Snacks\n");
                printf("\t2 = Meal\n");
                printf("\t3 = Drinks\n");
                printf("\n\tSelect a Category: ");
                scanf("%d",&choice);
                display(choice);
                printf("\n\tPlease Choose The Number of Your Required Item: ");
                scanf("%d",&takenumber);
                if (choice == 1)
                {
                    cnt = 0;
                    if (adminchoice == 2)
                        traverse(sheadvariable -> pointer, takenumber, 1, choice);
                    else if (adminchoice == 3)
                        traverse(sheadvariable -> pointer, takenumber, -1, choice);
                    else if (adminchoice == 4)
                    {
                        if (takenumber == 1)
                        {
                            snackstemp = sheadvariable -> pointer;
                            sheadvariable -> pointer = sheadvariable -> pointer -> nextsnacks;
                            free(snackstemp);
                            sheadvariable -> counter --;
                            printf("\n\t== Successfully Removed An Item ==\n");
                        }
                        else
                            traverse(sheadvariable -> pointer, --takenumber, 2, choice);
                    }
                }

                else if (choice == 2)
                {
                    cnt = 0;
                    if (adminchoice == 2)
                        traverse(mheadvariable -> pointer, takenumber, 1, choice);
                    else if (adminchoice == 3)
                        traverse(mheadvariable -> pointer, takenumber, -1, choice);
                    else if (adminchoice == 4)
                    {
                        if (takenumber == 1)
                        {
                            mealstemp = mheadvariable -> pointer;
                            mheadvariable -> pointer = mheadvariable -> pointer -> nextmeals;
                            free(mealstemp);
                            mheadvariable -> counter --;
                            printf("\n\t== Successfully Removed An Item ==\n");
                        }
                        else
                            traverse(mheadvariable -> pointer, --takenumber, 2, choice);
                    }
                }

                else if (choice == 3)
                {
                    cnt = 0;
                    if (adminchoice == 2)
                        traverse(dheadvariable -> pointer, takenumber, 1, choice);
                    else if (adminchoice == 3)
                        traverse(dheadvariable -> pointer, takenumber, -1, choice);
                    else if (adminchoice == 4)
                    {
                        if (takenumber == 1)
                        {
                            drinkstemp = dheadvariable -> pointer;
                            dheadvariable -> pointer = dheadvariable -> pointer -> nextdrinks;
                            free(drinkstemp);
                            dheadvariable -> counter --;
                            printf("\n\t== Successfully Removed An Item ==\n");
                        }
                        else
                            traverse(dheadvariable -> pointer, --takenumber, 2, choice);
                    }
                }
            }

            else if (adminchoice == 5)
            {
                display(1);
                display(2);
                display(3);
            }

            else if (adminchoice == 6)
                goto mainmenu;

            printf("\n");
            goto adminlevel;
        }
        else
        {
            printf("\n\tInvalid Password! You Cannot Access This Feature.\n");
            goto mainmenu;
        }
    }

    else if (user_choice == 2)
    {
        int customer_choice;
        printf("\n\t*************** WELCOME TO THE SUPER RESTURENT ***************\n");
        printf("\t--------------------------------------------------------------\n");
        customerlevel:
            printf("\n\t1 = Display Full Menu.\n");
        printf("\t2 = Make Your Choice.\n");
        printf("\t0 = Leave.\n");
        printf("\n\tPlease Enter Your Choice: ");
        scanf("%d",&customer_choice);
        totalcost = 0;
        if (customer_choice == 1)
        {
            display(1);
            display(2);
            display(3);
        }
        else if (customer_choice == 2)
        {
            choicelevel:
            int numchoice;
            char morechoice;
            printf("\nCategories:\n");
            printf("\t1 = Snacks\n");
            printf("\t2 = Meal\n");
            printf("\t3 = Drinks\n");
            printf("\n\tSelect a Category: ");
            scanf("%d",&choice);
            display(choice);
            printf("\n\tEnter Your Choice: ");
            scanf("%d",&numchoice);
            printf("\tEnter Your Required Quantity: ");
            scanf("%d",&quanchoice);
            cnt = 0;
            if (choice == 1)
                traverse(sheadvariable -> pointer, numchoice, -2, choice);
            else if (choice == 2)
                traverse(mheadvariable -> pointer, numchoice, -2, choice);
            else if (choice == 3)
                traverse(dheadvariable -> pointer, numchoice, -2, choice);
            cin.ignore();
            printf("\n\tDo You Want to Order Some Other Items? (Y = Yes)\t");
            scanf("%c",&morechoice);
            if (morechoice == 'y' || morechoice == 'Y')
                goto choicelevel;
            else
            {
                customerid++;
                customermind:
                printf("\n\tCustomer Id: %d\n\n",customerid);
                display(4);
                printf("\t\t\t    Total Cost = %d\n",totalcost);
                printf("\n\t1 = Confirm Order.\n");
                printf("\t2 = Make Some Change.\n");
                printf("\n\tEnter Your Choice: ");
                scanf("%d",&choice);
                if (choice == 1)
                {
                    printf("\n\tThank You. Please Wait, We Will Serve Your Order Very Soon.\n");
                    goto mainmenu;
                }
                else
                {
                    printf("\n\t1 = Add Some Item.\n");
                    printf("\t2 = Remove Some Item.\n");
                    printf("\tEnter Your Choice: ");
                    scanf("%d",&choice);
                    if (choice == 1)
                    {
                        goto choicelevel;
                        customerid--;
                    }
                    else if (choice == 2)
                    {
                        display(4);
                        int takenumber;
                        printf("\n\tPlease Choose The Number of Your Required Item: ");
                        scanf("%d",&takenumber);
                        if (takenumber == 1)
                        {
                            itemtemp = iheadvariable -> pointer;
                            iheadvariable -> pointer = iheadvariable -> pointer -> nextitem;
                            free(snackstemp);
                            sheadvariable -> counter --;
                            printf("\n\t== Successfully Removed An Item ==\n");
                        }
                        else
                        {
                            cnt = 0;
                            traverse(iheadvariable -> pointer, --takenumber, 2, 4);
                        }
                        goto customermind;
                    }
                }
            }
        }

        else if (customer_choice == 0)
            goto mainmenu;

        else
            printf("\n\tUnknown Option. Please Try Again.\n");

        goto customerlevel;
    }

    else if (user_choice == 0)
    {
        printf("\n\tThank You.\n");
        return 0;
    }

    else
    {
        printf("\n\tUnknown Option. Please Try Again.\n");
        goto mainmenu;
    }
}