#ifndef ARITHCOLL_H_
#define ARITHCOLL_H_
#include <stdlib.h>
#include <iostream.h>
//Purpose: An indexed collection of floats with addition and multiplication

template <int N>
class arithmetic_float_collection
{
   private:
	float collection[N];
   public:

void store
  (int index,                // IN: index of store in collection
   float value)              // IN: value to be stored

// Pre:  Index must be greater than or equal to zero
//       and less than N;
// Post: Legal floating point value is stored at 
//       collection[index].
{
   if ((index < 0) || (index > N-1))
   {
      cerr << endl;
      cerr << "*** ERROR: In arithmetic_float_collection::store: index" 
	   << endl;
      cerr << "    is out of range.  Execution terminated." << endl;
      exit(EXIT_FAILURE);
   }

   collection[index] = value;
}  // end store


// RETRIEVE AN ITEM FROM DESIGNATED COLLECTION ELEMENT
float retrieve
  (int index)     // IN: index of retrieval

// Pre:  Index must be greater than or equal to zero
//       and less than N.
// Post: Returns contents of cell indicated by index.
{
   if ((index < 0) || (index > N-1))
   {
      cerr << endl;
      cerr << "*** ERROR: In arithmetic_float_collection::retrieve: index" 
	   << endl;
      cerr << "    is out of range.  Execution terminated." 
	   << endl;
      exit(EXIT_FAILURE);
   }
   return collection[index];
}  // end retrieve



// RETURN THE NUMBER OF ELEMENTS STORED IN COLLECTION
int get_count ()
{
   return N;
}  // end get_count

void add(
		arithmetic_float_collection x,
		arithmetic_float_collection y
)
{
	int i;
	for(i=0; i<N; i++)
	{
		collection[i]=x.collection[i] + y.collection[i];
	}
	return;
}//add

void mul(
		arithmetic_float_collection x,
		arithmetic_float_collection y)
{
	int i;
	for( i=0; i<N; i++)
	{
		collection[i]=x.collection[i] * y.collection[i];
	}

	return;
}//mul
float sum()
{
	float result = 0.0;
	for(int i=0; i<N; i++)
	{
		result += retrieve(i);
	}
	return result;
}//sum
void input()
{
	float new_component;
	for(int i=0; i<N; i++)
	{
		cout << "Item "<<i<< "? ";
		cin >> new_component;
		store(i, new_component);
	}

	return;
}//input
void print()
{
	int i;
	cout << "----------------"<<endl;

	for(i=0; i<N; i++)
	{
		cout << "Item "<<i<< " is "<< collection[i]<<endl;
	}

	cout << "----------------"<<endl;

	return;
}//input
};//arithmetic_float_collection
#endif