#include <cstdlib>
#include <iostream>

int main()
{
  using namespace std;
  int anzahl = 1000;
  int *ptr = (int*) malloc(anzahl*sizeof(int));

  if (ptr != NULL)
  {
    ptr[0] = 0;
    ptr[anzahl-1] = 999; 
    // ...
    cout << ptr[0] << "..." << ptr[anzahl-1] << '\n';
    free(ptr);
  }
  else
  {
    cerr << "Nicht genug Speicher vorhanden.\n";
  } 
}