Exception thrown when trying to display previously entered information

I have to get the user to input data for an item and then when they have done that they can display that information by pressing 2. I get an Exception thrown at 0x7A111F4C (ucrtbased.dll) in ProceduralProjectG00358662.exe: 0xC0000005: Access violation reading location 0x0000004F. It displays the item number and then I get the exception. Any help is appreciated thanks

#include<stdio.h>
#include<conio.h>
#include<string.h>
#include <malloc.h>
#include <string>

typedef struct node {//Node Struct to read in file data
    int itemNum;
    std::string itemName;
    std::string itemSupplierName;
    int itemSupplierPhoneNumber;
    int reorderLimit;
    int numOfUnits;
    float costPerUnit;
    std::string  lastOrderDate;
    int needToBeStored;
    int departmentDelivery;
    int  monthsToReorder;
    int authorize;

    struct node* NEXT; //Moves to next line in the file
}stock;

typedef struct loginUser {//login information for the user
    std::string name;
    std::string password;

    struct loginUser* NEXT; //Moves to next line in the file
}login;

//Functions
void addNode(struct node** top, int numItemFunc, std::string nameItemFunc, std::string supplierNameFunc, int phoneNumFunc,  int limitFunc, int numBoughtFunc, float unitCostFunc, std::string  dateFunc, int storageFunc, int deliveryFunc, int reorderFunc, int authorizeFunc);
void addStockToList(struct node** top);
void displayList(struct node* top);

void main()
{
    struct node* headPtr = NULL;
    struct node* loginUser = NULL;
    FILE* report;
    FILE* stock;
    FILE* users;

    report = fopen("Report File.txt", "r");
    stock = fopen("Stock File.txt", "r");
    users = fopen("Users File.txt", "r");

    //Variables for stock file
    int numItem;
    std::string nameItem;
    std::string nameItemSupplier;
    int phoneNumberItemSupplier;
    int limitReorder;
    int amount;
    float unitPerCost;
    std::string dateLastOrder;
    int storageNeeded;
    int deliveryDepartment;
    int  reorderMonths;
    int authorize;

    //variables for login
    std::string username;
    std::string passwordLogin;

    //variables
    int option;

    if (stock == NULL)
    {
        printf("Nothing added to the list\n");
    }

    else
    {
        while (!feof(stock))
        {
            fscanf(report, "%d %s %s %d %d %d %f %s %d %d %d %d\n", numItem, nameItem, nameItemSupplier, phoneNumberItemSupplier, limitReorder,
                amount, unitPerCost, dateLastOrder, storageNeeded, deliveryDepartment, reorderMonths, authorize);

            addNode(&headPtr,  numItem,  nameItem, nameItemSupplier, phoneNumberItemSupplier,
                limitReorder, amount, unitPerCost, dateLastOrder, storageNeeded, deliveryDepartment, reorderMonths,  authorize);
        }
        fclose(stock);
    }



    //User menu
    printf("1 to add a stock item\n");
    printf("2 display all stock items on the screen\n");
    printf("3 to display specific stock items\n");
    printf("4 to update stock item details\n");
    printf("5 to delete stock item\n");
    printf("6 to generate statistics\n");
    printf("7 to print stock items into the report file\n");
    printf("8 to display items in order of value\n");
    printf("-1 to exit\n");

    scanf("%d", &option);

    while (option != -1)
    {

        if (option == 1)
        {
            addStockToList(&headPtr);
        }

        else if (option == 2)
        {
            displayList(headPtr);
        }
        //User menu
        printf("1 to add a stock item\n");
        printf("2 display all stock items on the screen\n");
        printf("3 to display specific stock items\n");
        printf("4 to update stock item details\n");
        printf("5 to delete stock item\n");
        printf("6 to generate statistics\n");
        printf("7 to print stock items into the report file\n");
        printf("8 to display items in order of value\n");
        printf("-1 to exit\n");

        scanf("%d", &option);
    }

    getch();
}//main

//Functions
void addNode(struct node** top, int numItemFunc, std::string  nameItemFunc, std::string  supplierNameFunc, int phoneNumFunc,
    int limitFunc, int numBoughtFunc, float unitCostFunc, std::string  dateFunc, int storageFunc, int deliveryFunc, int reorderFunc, int authorizeFunc)//Adds in data from Stock File.txt
{
    struct node* newNode = (struct node*)malloc(sizeof(struct node));

    newNode->itemNum = numItemFunc;
    newNode->itemName = nameItemFunc;
    newNode->itemSupplierName = supplierNameFunc;
    newNode->itemSupplierPhoneNumber = phoneNumFunc;
    newNode->reorderLimit = limitFunc;
    newNode->numOfUnits = numBoughtFunc;
    newNode->costPerUnit = unitCostFunc;
    newNode->lastOrderDate = dateFunc;
    newNode->needToBeStored = storageFunc;
    newNode->departmentDelivery = deliveryFunc;
    newNode->monthsToReorder = reorderFunc;
    newNode->authorize = authorizeFunc;

    newNode->NEXT = *top;

    *top = newNode;
}

void addStockToList(struct node** top)
{
    struct node** temp = top;
    struct node* newNode = (struct node*)malloc(sizeof(struct node));

    printf("Enter Item number:\n");
    scanf("%d", &newNode->itemNum);

    printf("Enter Item name:\n");
    scanf("%s", &newNode->itemName);

    printf("Enter Item supplier name:\n");
    scanf("%s", &newNode->itemSupplierName);

    printf("Enter Item supplier phone number:\n");
    scanf("%d", &newNode->itemSupplierPhoneNumber);

    printf("Enter Item reorder limit:\n");
    scanf("%d", &newNode->reorderLimit);

    printf("Enter number of units:\n");
    scanf("%d", &newNode->numOfUnits);

    printf("Enter the cost per unit:\n");
    scanf("%f", &newNode->costPerUnit);

    printf("Enter Item last order date:\n");
    scanf("%s", &newNode->lastOrderDate);

    printf("Item needs to be stored?:\n");
    scanf("%d", &newNode->needToBeStored);

    printf("Enter the department this item belongs to, 1 for Office, 2 for Maintenance:\n");
    scanf("%d", &newNode->departmentDelivery);

    printf("Enter the months if you need to reorder 1 - 12 or 0 for none:\n");
    scanf("%d", &newNode->monthsToReorder);

    printf("Enter the person that needs to authorize this, 1 for Managing Director, 2 for Financial Controller or 3 for Department Manager :\n");
    scanf("%d", &newNode->authorize);



    newNode->NEXT = *top;
    *top = newNode;
}

void displayList(struct node* top)
{
    struct node* temp = top;

    while (temp != NULL)
    {
        printf("Item Number: %d\n", temp->itemNum);
        printf("Item Name: %s\n", temp->itemName);
        printf("Item Number: %s\n", temp->itemSupplierName);
        printf("Item supplier phone number: %d\n", temp->itemSupplierPhoneNumber);
        printf("Item reorder limit: %d\n", temp->reorderLimit);
        printf("Item number of units: %d\n", temp->numOfUnits);
        printf("Item cost per unit: %f\n", temp->costPerUnit);
        printf("Item last order date: %s\n", temp->lastOrderDate);
        printf("Item needs to be stored?: %d\n", temp->needToBeStored);
        printf("Item delivery department: %d\n", temp->departmentDelivery);
        printf("Item months it needs to be re orderd: %d\n", temp->monthsToReorder);
        printf("Needs to be authorizied: %d\n", temp->authorize);

        temp = temp->NEXT;
    }
}

As others have pointed out in the comments, there are many problems with this code / general solution.

The reason behind the specific access violation you mentioned (which may seem tricky - why would the first printf in displayList work, and then this one fail?) is that you are attempting to treat an std::string as a char* when you pass it into your second printf.

See this for more help.