#include <iostream>
using namespace std;


// what's the other way I could do this, without using a return type?
// is it any 'cleaner'?

int* doubleSize(int* anArray, int & size)
{
     int i;
     int* arrayToReturn;
     
     size = size * 2;
     arrayToReturn = new int[size];

     // copy over, back to back versions of original array
     for (i = 0; i < size; i++)
     {
          arrayToReturn[i] = anArray[i % (size/2)];
     }
     
     delete [] anArray;
     return arrayToReturn;
}


int main(int argc, char* argv[])
{
     int i;
     int requestedSize;
     int* theArray;

     cout << "How many integers do you need to hold? ";
     cin >> requestedSize;

     theArray = new int[requestedSize];
     for (i = 0; i < requestedSize; i++)
     {
          theArray[i] = i;
     }

    theArray = doubleSize(theArray,requestedSize);

     cout << "Bam! Now you've got space for twice as many integers..." << endl;
     for (i = 0; i < requestedSize; i++)
     {
          cout << theArray[i] << " ";
     }
     cout << endl;

     delete [] theArray;
     
}