请问这哪里错了
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
if(num>=0 && num<=99999999);{
while(num!=0){
count++;
num/=10;
}
System.out.println("它是个" +count+ "位的数！");
}
else{
System.out.println("输入有误！");
}
举报
0/150
提交
取消
