template <typename T>
T& maximum(T& a, T& b) { return (a>b?a:b); }

#include <iostream>
using namespace std;

int main() {
  int a = 5, b = 10;
  double d = 5.5, f=3.3;
  cout << "max(5,10): " << maximum<int>(a,b) << endl;
  cout << "max(5.5,3.3): " << maximum<double>(d,f) << endl;
}