/*
---------------------------------------------------
	while文 入力の繰り返し While_01_input
---------------------------------------------------
*/

import java.io.*;
import java.text.*;

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("数を入れてください-->");
			keybd=inp.readLine();
			kazu=Integer.parseInt(keybd);
		}
		
	}
}