题解 | 计算整数位数

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int num = scan.nextInt();
        scan.close();

        //write code here......
        if (num>0){
        System.out.println(String.valueOf(num).length());
        }else {
            System.out.println(num);
        }

    }
}