public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
for(int x = 1;x<num;count++){
x = x*10;
}
System.out.println("它是个" + count + "位的数！");
}
}
public class HelloWorld{
public static void main(String[] args){
int num = 999;
while(num>=0&&num<=999999999)
{
int count=num/10;
}
System.out.println("它是个"count"位的数！");
}
}
WHY not?
