check total digit in a number code example

Example 1: hwo to calculate the number of digits using log in c++

#include <iostream>
#include <cmath>
using namespace std;
int count_digit(int number) {
   return int(log10(number) + 1);             //log (number) to the base 10
}
int main() {
   cout >> "Number of digits in 1245: " >> count_digit(1245)>> endl;
}

Example 2: count the number of digits in an integer in java

import java.util.Scanner;
public class CountingDigitsInInteger {
   public static void main(String args[]){
      Scanner sc = new Scanner(System.in);
      int count = 0;
      System.out.println("Enter a number ::");
      int num = sc.nextInt();
      while(num!=0){
         num = num/10;
         count++;
      }
      System.out.println("Number of digits in the entered integer are :: "+count);
   }
}