#include <iostream>
#include <string>
using namespace std;

int *twiceAsManyValues(int a[], int size)
{
  int *x = new int[size*2];
  int i;
  for (i = 0; i < size;i++) {
    x[i*2] = a[i];
    x[i*2+1] = a[i];
  }
  return x;
  //   a = new int[10];  // does not work
}

int main() 
{
   int a[5] = {1,2,3,4,5};
   int *b;
   int i;
   b = twiceAsManyValues(a,5);

   for (i=0;i<10;i++) cout << b[i] << " ";
   cout << endl;
   delete b;

   return 0;
}