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