题解 | #计算整数位数#

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 rank=num;
        int count=0;
        while(rank!=0){
            rank/=10;
            count+=1;
        }
        System.out.println(count);
    }
}