// B1b.cpp

#include <iostream>

using namespace std;

template<class T> 
T findAvg(const T* array) {

  int n = sizeof(array)/sizeof(T);
  if(n <= 0) return 0;
  int i;
  T sum = 0;
  for(i=0; i<n; i++)
    sum += array[i];
  return sum/n;
}

void main() {

  long double darray[4] = { 0, -1, 6, 2 };
  int i;
  for(i=0; i<4; i++)
    cout << "  " << darray[i];
  cout << endl << endl;
  cout << "average element is " << findAvg(darray,4) << endl;
  
  cout << endl << endl;

  int iarray[3] = { 0, 1, 2 };
  for(i=0; i<3; i++)
    cout << "  " << iarray[i];
  cout << endl << endl;
  cout << "average element is " << findAvg(iarray,3) << endl;
}