Help with code

[rsegecin]

Hi. I´m new to C++, but I already worked with C, and I´m having some trouble to work with OO together with pointers. The code below is aimed to manage pile it´s compiling but it´s not working. Any help would be deeply appreciated. Thank yoou very much.

#include <stdio.h>
#include <string.h>
#include <cstdlib>
#include <iostream>

using namespace std;

class ListItem
    {
    public:
        ListItem (char *);
        ListItem *next;
        char word [];
    };

ListItem::ListItem(char *wordParam)
    {
    next = NULL;
    strcpy(wordParam, word);
    }

class List
    {
    public:
        List();
        int length;
        ListItem *firstItemRef;
        void Add(ListItem *listItemParam);
//        void InsertFirst(ListItem listItemParam);
//        void InsertLast(ListItem listItemParam);
//        void Remove(ListItem listItemParam);
//        void RemoveFirst();
//        void RemoveLast();
//        void RemoveIndex(int indexParam);
//        void Dispose();
    };

List::List()
    {
    length = 0;
    firstItemRef = NULL;
    }

void List::Add(ListItem *listItemParam)
    {
    length = 0;
    printf("%d", &firstItemRef);
   
    if (firstItemRef != NULL)
        {
        ListItem *listItem = firstItemRef;
       
        while(listItem->next != NULL)
            {
            length++;
            listItem = listItem->next;
            }
           
        listItem->next = listItemParam;
        }
    else
        {
        length = 1;
        firstItemRef = listItemParam;
        }
    }

int main(int argc, char *argv[])
    {
    List *list = new List();
    ListItem *item = new ListItem("firstItem");
    list->Add(item);
    
    printf("hello friends");
    scanf("\n");
    }

[hamsterman]

You can't have arrays of undefined length (line 13). Either choose a number, use char* and allocate memory of use std::string.
First argument of strcpy is destination (line 19), so you're trying to write on "firstItem" (which by the way is a const char*).
Other than that it seems ok..