package Lianxi01;
import java.util.Scanner;
public class Test09 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("请输入一个正整数:");
int num = sc.nextInt();
String bitStr= "";
while (true){
int bit = num%2;
bitStr = bit+bitStr;
num/=2;
if (num==2){
break;
}
}
System.out.println(bitStr);
}
}