个回答

• qq_喜喜_2

  2018-09-23 13:14:23

  public class HelloWorld{

  public static void main(String[] args){

      int num = 999;

      int count = 0;

      int i=1;

      while (num/i != 0){

          i=i*10;

          count++;

      }

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

      }

  }

  把%换成/

  0

• 慕哥5235746

  2018-09-22 23:12:01

  当i等于1，你求余数肯定是0

  0