//  B1_9.cpp

#include <iostream>
using namespace std;

template <class U, class V> U sum(const U &u, const V &v) { 

  return u+v;
}

void main() {

  double d = 5.5;
  int i = -3;

  cout <<  "\n  sum of " << d << " and " << i 
       << " = " << sum(d,i) << "\n\n";

}