std::vector<T*> elemArray;

  for (size_t i = 0; i < elemArray.size(); ++i)
  {
    elemArray = new T();
  }

std::vector<T> elemArray;
for (size_t i = 0; i < elemCount; ++i) {
   elemArray.push_back(T(i));
}

std::vector<T> elemArray(numberOfElements);

for (size_t i = 0; i < someSize ; ++i)
{
    elemArray.push_back(new T());
}

Item items[2000000]; // stack overflow

std::vector<Item> items(2000000);

elemArray[i] = new (GetNextContinuousAddress()) T();

int sz = sizeof(T);
    int maxelements = 100000;

    T *obj = new T [100000];

    vector<T *> vectorofptr;

    for (int i = 0; i < maxelements; i++)
    {
        vectorofptr.push_back(&obj[i]);
    }

int sz = sizeof(T);
    int maxelements = 100000;

    void *base = calloc(maxelements, sz); //need to save base for free()

    vector<T *> vectorofptr;
    int offset = 0;

    for (int i = 0; i < maxelements; i++)
    {
        vectorofptr.push_back((T *) base + offset);
        offset += sz;
    }