/*
 * Read some integers into an array, then echo them, using iterators.
 */
#include <iostream>
#include <array>

int main()
{
	// Read them in.
	std::array<int, 100> arr;
	std::array<int, 100>::iterator scan = arr.begin();
	std::cout << "Enter some integers: " << std::endl;
	while(std::cin >> *scan) {
		++scan;
	}
	auto end = scan;

	// Print them back out again.
	std::cout << "===============" << std::endl;
	for(scan = arr.begin(); scan < end; ++scan) {
		std::cout << *scan << " ";
	}
	std::cout << std::endl;

	// Array iterators can be compared, the result reflecting their
	// position, and they can incremented by numbers other than 1.
	// Here, we go up the even-numbered ones, then the odd ones.
	scan = arr.begin();
	while(scan < end) {
		std::cout << *scan;
		scan += 2;
		if(scan < end) {
			std::cout << " ";
		}
	}
	
	std::string sep = "|";
	for(scan = arr.begin() + 1; scan < end; scan += 2) {
		std::cout << sep << *scan;
		sep = " ";
	}
	std::cout << "\n===============" << std::endl;
}