/*
------------------------------------------------------
	while文　入力を繰り返すプログラム While_01_input
------------------------------------------------------
*/
import java.io.*;

class While_01_input{
	public static void main(String[] args) throws Exception {
		
		int kazu;
		
		BufferedReader inp=new BufferedReader
			(new InputStreamReader(System.in));
		String keybd;
		
		System.out.print("数を入れてください -->");
		keybd=inp.readLine();
		kazu=Integer.parseInt(keybd);
		
		while ( kazu != 0 ) {
			System.out.print("もう一度数を入れてください -->");
			keybd=inp.readLine();
			kazu=Integer.parseInt(keybd);
		}
		
	}
}