import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
//把整数n转换为字符串求其长度
int len = Integer.toString(n).length();
System.out.println("用字符串的方式求其长度len="+len);
//用while循环求其长度
int count = 0;
while(true)
{
count++;
n = n/10;
if(n==0)
break;
}
System.out.println("用while循环求其字符串的长度len"+count);
}
}