3回答

• 

  qq_浮云_16

  2016-04-19 19:43:43

  已采纳

  num=num/10

  0 0
• 

  白雪麋鹿

  2016-04-19 19:44:36

  public class HelloWorld{

  public static void main(String[] args){

  int num = 999;

  int count = 0;

  if (num >= 0  && num<=999999999){

  while(num != 0){

  count++;

  num/=10;

  }

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

  } else{

  System.out.println("输入有误！");

  }

  }

  }

  
  

  0 0
• 

  袁宇豪

  2016-04-19 19:43:47

  想起来了，num/=10   →  num=num/10

  0 1