我觉得可以这样啊！
public class HelloWorld{
public static void main(String[] args){
int num = 999;
System.out.println("它是个"+(num+"").length()+"位的数！");
}
}
与心海扬帆
2022-02-24
1 回答
import java.util.Scanner;
public class Demo415 {
public static void main(String[] args) {
int num = 999;
System.out.print("请输入一个小于10位的数：");
num = new Scanner(System.in).nextInt();
int count = 0;
if (num < 1000000000) {
System.out.println(String.format("%d它是个%s位的数！", num, String.valueOf(num).length()));
}
}
}举报
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