#define DATASIZE 16

class Data {
  float *arr;

public:
  Data() { arr = new float[DATASIZE]; }
  ~Data() { delete [] arr; }
  float &get(int i) { return arr[i]; }
};

class DataKeeper {
  Data a, b;

public:
  void init() {
    for (int i = 0; i < DATASIZE; ++i) {
      a.get(i) = i*i;
    }
  }
};

int main() {
  DataKeeper DK;
  DK.init();
}