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

//Output the four numbers 0, 1, 2, 3, with the spacing requested by the user.

int main()
{
	cout << "Type 1 for single space, 2 for double space, etc. ";
	int spacing {1};
	cin >> spacing;

	if (!cin) {
		cerr << "Sorry, that wasn't a number.\n";
		return EXIT_FAILURE;
	}

	if (spacing <= 0) {
		cerr << "Sorry, the spacing must be positive.\n";
		return EXIT_FAILURE;
	}

	for (int i {0}; i < 4; ++i) {
		cout << i << " -------------------";
		for (int j {0}; j < spacing; ++j) {
			cout << "\n";
		}
	}

	return EXIT_SUCCESS;
}