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


void print_stars(int);


int main()

{
        char c;
	do {
    	  int size;
	  cout << "How large should the box be printed? ";
	  cin >> size;
	  print_stars(size);

	  cout << "Do it again?";
	  cin >> c;
        } while ((c=='y')||(c=='Y'));

	return 0;

}


void print_stars(int size)
{
   int a,b;
   for (a=0;a<size;a++) {
     for (b=0;b<size;b++) cout << "*";
     cout << endl;
   }
}