C++ template function

#include <iostream>

template <typename T> T larger(T a, T b);    // Function template prototype

int main()/*from  w ww .  j  a va2 s  . c  o m*/
{
  std::cout << "Larger of 1.5 and 2.5 is " << larger(1.5, 2.5) << std::endl;
  std::cout << "Larger of 3.5 and 4.5 is " << larger(3.5, 4.5) << std::endl;

  int a_int {35}, b_int {45};
  std::cout << "Larger of " << a_int << " and " << b_int << " is "
            << larger(a_int, b_int) << std::endl;
  long a_long {9L}, b_long {8L};
  std::cout << "Larger of " << a_long << " and " << b_long << " is "
            << larger(a_long, b_long) << std::endl;
}

// Template for functions to return the larger of two values
template <typename T>
T larger(T a, T b)
{
    return a > b ? a : b;
}