// Illustrates how to declare an array dynamically,
// and how to delete the array.
#include <iostream>
#include <iomanip>

using namespace std;

void MakeArray(int*& newArray, const int Size);
void InitArray(int A[], const int Size);
void PrintArray(const int A[], const int Size);
void DelArray(int*& newArray);

void main() {

   int *myArray = NULL;
   int mySize;

// Get dimension of array from user:
   cout << "Enter dimension of array: ";
   cin  >> mySize;
   cout << endl << endl;

// Allocate array dynamically using new operator:
   MakeArray(myArray, mySize);

// Initialize array:
   InitArray(myArray, mySize);

// Print array:
   PrintArray(myArray, mySize);

// Deallocate array storage:
   DelArray(myArray);

}

// QTP 1:  What does the syntax *& mean about the first parameter?
// QTP 2:  Is that necessary in order for this function to work
//         correctly?  Why?
void MakeArray(int*& newArray, const int Size) {

   newArray = new int[Size];
}

// QTP 3:  What happens if the second actual parameter is too large?
void InitArray(int A[], const int Size) {

   for (int idx = 0; idx < Size; idx++) {
      A[idx] = idx;
   }
}

void PrintArray(const int A[], const int Size) {

   cout << "Idx     Address  Value" << endl;
   for (int idx = 0; idx < Size; idx++) {
      cout << setw( 3) << idx
           << setw(12) << &A[idx]
           << setw( 5) << A[idx]
           << endl;
   }
}

void DelArray(int*& newArray) {

   delete [] newArray;
}