import java.util.Scanner;

public class HelloWorld {

    public static void main(String[] args)

{

Scanner scan=new Scanner(System.in);

System.out.println("请输入数字");

int num=scan.nextInt();

int count = 0;

   for(int i=1000000000;i>0;)

{   

   if(num/i>0)

   {

       count++;

   }i=i/10;

}System.out.println("它是个"+count+"位的数");

}

}