// File; Alloc.cpp
// Catch allocation exceptions

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

int main()
{
  int *p, i;
  int num;
  cerr << "How many ints to allocate? >";
  cin >> num;
  try { 
     p = new int[num]; // allocate memory for num-element int array
  } 
   // bad_alloc is built-in C++ exception
  catch (bad_alloc xa) { 
    cout << "Allocation failure.\n";
    return 1;
  }

  for(i = 0; i <num; i++) 
     p[i] = i;

  for(i = 0; i <num; i++) 
     cout << p[i] << " ";

  delete [] p; // free the memory

  return 0;
}