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(num);
        }else{
            int temp = 0;
            for(; num > 0; temp++){
                num /= 10;
            }
            System.out.println(temp);
        }

    }
}