#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
	int i {70};

	{cout << "Please enter a positive whole number less than 1000 and press ENTER.\n";

	cin >> i;
	}
	
	if (i >= 1000) {
		cerr <<"Sorry, this number is too high.\n";
		return EXIT_FAILURE;
	}
	if (i < 1) {
		cerr <<"Sorry, this number is too low.\n";
		return EXIT_FAILURE;
	}

	if (!cin) {
		cerr <<"Invalid input.  It shouldn't be that hard...\n";
		return EXIT_FAILURE;
	}

	while (0 < i && i < 1000) {
		cout << i << "\n";
		++i ;
	
		if (i > 1100) {
			cerr << "number go brrrrrrrrr  \n";
			return EXIT_FAILURE;
		}
	}
	return EXIT_SUCCESS;
}