/* 

An example of nested loops..

Laura Toma
csci 101
*/


public class Stars {
	
	public static void main (String args[]) {


		ReadStream r = new ReadStream(); 
		int n; 

		System.out.print("Enter a number and I'll draw a pattern of stars for you: ");
		n = r.readInt(); 
		r.readLine();

		int i, j; 
		
		i=1;
		while (i <= n) {
			
			//draw a line of n stars
			j=1;
			while (j <= i/2) {
				System.out.print("*");
				j = j+1; 
			}
			//print a newline after each line of n stars
			System.out.println();

			i = i+1; 
		}

		System.out.println("Goodbye.");

	} //end of main
	
} // end of class