I have a java program which count the digits in the integer using for loop

it returns me the count as count of digit minus 1

For eg.if i enter 6 digit integer it returns count of 5

   if I enter 10 digit integer it returns count of 9

public class DigitCount {

    public static void main(String[] args) {

        int a=123456;
        int count=0;

        for (int i=0;i<=a;i++){
            a=a/10;
            count++;


        }

        System.out.println(" numb of digits are :  "+ count);
    }
}