请问哪里错了
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
if(num>=0 && num<=999999999999){
while(num!=0){
count++;
num/=10;
}
System.out.println("它是个"+count"位的数！");
else{System.out.println("它是个辣鸡！")}
}
}
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