public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
if(num<1000000000){
num/10=count;
System.out.println("它是个"+count+"位的数！");
}
}
}
这个是对的啊，我的输出就是：它是个3位的数！就是网页一直说没输出，明明都输出了
public class HelloWorld{
public static void main(String[] args){
int num = 999;
int count = 0;
if (num >= 0 && num<=9999999999){
while(num != 0){
count++;
num/=10;
}
System.out.println("它是个"+ count+"位的数！");
} else{
System.out.println("输入有误！");
}
}