#include <iostream>
#include <string>

#define ROW_PAD 5
#define COL_PAD	8

int main(void)
{
	using std::cout;	using std::endl;
	using std::cin;		using std::string;

	const int rows = ROW_PAD * 2 + 3;	// empty + first/last line + greeting
	string name;

	cout << "Enter your name: ";
	cin >> name;

	const string greeting = "Hello " + name + "!";
	const string::size_type cols = COL_PAD * 2 + greeting.size() + 2;

	cout << endl;

	/*
	 * Loop invariant:
	 * 	-We've written 'r' rows so far
	 */
	const string col_blank(COL_PAD, ' ');
	const string row_blank(cols - 2, ' ');
	for (int r = 0; r != rows; r++) {

		string::size_type c = 0;
		/*
		 * Loop invariant:
		 * 	- We've written 'c' columns so far
		 */
		while (c != cols) {
			if (r == ROW_PAD + 1 && c == 1) {
				cout << col_blank << greeting << col_blank;
				c += greeting.size() + (blank.size() * 2);
			} else {
				if (r == 0 || r == rows - 1 ||
				    c == 0 || c == cols - 1) {
					cout << "*";
					c++;
				} else {
					cout << row_blank;
					c += row_blank.size();
				}
			}
		}
		cout << endl;
	}
	return 0;
}