#include <iostream>
#include <array>
#include <stdexcept>
#include <string>

/*
 * Numeric template parameters are useful to write a function which can
 * apply to arrays of any size.
 */
template<typename T, long unsigned int N>
T arrmax(const std::array<T,N> &arr)
{
	if(N < 1) throw std::underflow_error("Taking max of empty array");

	auto scan = arr.begin();
	T ret = *scan++;
	while(scan < arr.end()) {
		if(ret < *scan) {
			ret = *scan;
		}
		++scan;
	}

	return ret;
}


int main()
{
	std::array<int, 10> a1 = { 4, 99, -1, 45, -6, 11, 22, 3, -11, 9 };
	std::array<int, 5> a2 = { -10, -5, -3, -8, -17 };
	std::array<std::string, 6> a3 = { "This", "is", "a", "very",
		"short", "sentence" };
	std::array<double, 4> a4 = { 20.1, -3.3, 1661.7, 2.2 };

	std::cout << arrmax(a1) << " " << arrmax(a2) << " "
		  << arrmax(a3) << " " << arrmax(a4) << std::endl;
}