Array String null - c++

Question

Why does my IntForItem1 go over the max lenght of arrayStrings???
int TotalItems = 0, IntForItem1 = 0;
struct Item
{
int Index;
std::string* stringArray = new std::string[555]; //random value coz it will change in GetItems right?
};
Item item[120];
int AddNewItem(int i, int Index, std::string stringarray[])
{
item[i].Index = Index;
item[i].stringArray = stringarray;
return (i + 1);
}
void GetItems()
{
int i = 0;
std::string * test = new std::string[4]{ "1", "2", "3", "4"};
i = AddNewItem(i, IntForItem1, test);
TotalItems = i;
}
int main()
{
GetItems();
while (true)
{
system("CLS");
for (int i = 0; i < TotalItems; i++)
std::cout << item[i].stringArray[item[i].Index].c_str();
while (true)
{
if (GetAsyncKeyState(VK_LEFT) & 1)
{
if (item[0].Index <= 0)
item[0].Index = 0;
else
item[0].Index -= 1;
break;
}
else if (GetAsyncKeyState(VK_RIGHT) & 1)
{
if (item[0].Index >= sizeof(item[0].stringArray))
item[0].Index = sizeof(item[0].stringArray);
else
item[0].Index += 1;
break;
}
}
}
Sleep(1);
return 0;
}

Answer 1

sizeof(item[0].stringArray) in your code is the size of the string pointer, not the size of the space you set.
You can try this.
In additon, you should pay attention to the size of your array, otherwise you will always right-click the size of the array, can cause array crossing bounds, causing program errors.