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;  //计位器
    if(num <= 0)
        System.out.print(num);
    else{
        while(num >= 1){
            count++;
            num = num/10;
        }
     }
    System.out.print(count);
}

}