// While Loops: using chars

public class while_loop_chars {
	public static void main( String[] args) {
		
		char index = 'a'; // priming
		while (index <='z')  // test
		{
			System.out.print(index);
			index++;   // update
		} // end of loop
                System.out.print("\n");
                System.exit(0);
	} // end of main
} // end of class