求大神指代你哪里错了
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
if(num >= 0&&num <= 99999999999999){
while(num != 0){
count++;
num /= 10;
}
System.out.println("它是个"+count+"位的数！")；
}else{
System.out.println("输入有误！");
}
}
}
