如题,请大神帮忙
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
while(num!=0){
num/=10;
count++;
}
System.out.println("它是个"+count+"位的数!");
}
}
String s = Integer.toString(num);
System.out.println("它是个"+s.length()+"位的数!");
没人知道么
补充,这是个正整数