import java.util.Scanner;


public class NumberOfDigits {

   public static void main(String[] args) {
   Scanner input=new Scanner(System.in);
   long n,m;
   short count=0;
   System.out.println("plz eter a positive enteger number : ");
   n=input.nextLong();
   while(n!=0){
      m= n%10;
      count=1;
      n/=10;
      count++;
      }
      System.out.println("numberOfDigits = " + count);
   }
}