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#include <iostream>
#include <assert.h> 
#include <stdlib.h>
using namespace std;
class vect {
public:
   explicit vect(int n);
   ~vect() { delete []p; }
   int  ub() const { return (size - 1); }
   vect& operator=(const vect& v);  
   void print() const;
   int&  operator[](int i) ;        
   vect operator+(const vect& v);
private:
   int*  p;
   int   size;
};

vect::vect(int n): size(n)
{
   if (n < 1) 
      throw (n);
   p = new int[n];
   if (p == 0)
      throw ("FREE STORE EXHAUSTED");
}


int& vect::operator[](int i)
{
   assert(i >= 0 && i < size);
   return p[i];
}

vect& vect::operator=(const vect& v)
{
   int s = (size < v.size) ? size : v.size;

   if (v.size != size)
      cerr << "copying different size arrays "
           << size << " and " << v.size << endl;
   for (int i = 0; i < s; ++i)
      p[i] = v.p[i];
   return (*this);
}


void vect::print() const
{
   for (int i = 0; i <= (size-1); ++i)
      cout << p[i] << "\t";
   cout << endl;
}

vect vect::operator+(const vect& v)
{
   assert(size == v.size);
   vect  sum(size);
   for (int i = 0; i < size; ++i)
      sum.p[i] = p[i] + v.p[i];
   return sum;
}



void g (int m)
{
  try {
      vect  a(m), b(m);
  }
  catch(int m)
  {
     cerr << "SIZE ERROR " << m << endl;
     g(10);      
  }
  catch(const char* error)
  {
     cerr << error << endl;
     abort();
  }
}


int main()
{
   int n = -5;   

   g(n);
}