Question

Write a program using while loop in java to count the number of digits in an unknown number.​

Answer 1

Answer:

public class NumberDigits {

   public static void main(String[] args) {

       int count = 0, num = 3452;

       while(num != 0)

       {

           // num = num/10

           num /= 10;

           ++count;

       }

       System.out.println("Number of digits: " + count);

   }

}

Explanation:

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