public static void main(String[] args){
int num = 999999999;
int count = 0;
int i = 1;
for (; i < 10; i++){
count = num / (int)Math.pow(10, i);
if (count < 1){
break;
}
}
System.out.println("它是個" + i + "位的數！");
}
public class HelloWorld{
public static void main(String[] args) {
String myLove="我愛慕課網"；
String _age="www.xianlaiwan.cn";
System.out.println(myLove);
System.out.println(_age);
