C++ - "Allocating array of pointers on Heap"

dynamicArray.cpp

// declare dynamic array in C++
int main()
{
  int size;
  std::cin >> size;

  int *array = new int[size];
  
  delete [] array;
  
  return 0;
}

//dynamically allocate an array c++
//int *a = NULL;    // Pointer to int, initialize to nothing.
//int n;            // Size needed for array
//cin >> n;         // Read in the size
//a = new int[n];   // Allocate n ints and save ptr in a.
//for (int i=0; i<n; i++) {
//    a[i] = 0;     // Initialize all elements to zero.
//}
//. . .             // `a` can be used as a normal array
//delete [] a;      // When done, free memory pointed to by a.
//a = NULL;         // Clear a to prevent using invalid memory reference.