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......
        int count = 0;
        if (num <= 0){
            System.out.println(num);
        }else{
            while(num != 0){
                num /= 10;
                count++;
            }
        }
        System.out.println(count);
    }
}