#include <iostream>
#include <cstdlib>
using namespace std;

int minimum(int *first, int *last);

int main()
{
	int a[] {
		1968,
		2001,
		1492,
		1945,
		1066,
		1918
	};

	cout << "The smallest number is " << minimum(begin(a), end(a)) << ".\n";
	return EXIT_SUCCESS;
}

int minimum(int *first, int *last)
{
	if (first == last) {
		cerr << "The array is empty, so it has no smallest element.\n";
		exit(EXIT_FAILURE);
	}

	int smallest {*first};   //Temporarily assume that first el is smallest.
	
	for (++first; first != last; ++first) {
		if (*first < smallest) {
			smallest = *first;
		}
	}

	return smallest;
}