In this post, we will learn how to add digits of a number using Java Programming language. So, let’s see the Java Program to add digits of a number.
Java Program to Add Digits of a Number
import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
System.out.println("Enter the number : ");
int number = sc.nextInt();
int num = number;
int sum = 0;
while(num!=0){
int digits = num%10;
sum += digits;
num /= 10;
}
System.out.println("Sum of the digits of "+number+" is "+sum);
}
}
Output
Enter the number: 9999
Sum of the digits of 9999 is 36How Does This Program Work ?
In this program, we first input the number using Scanner Class in Java. Then we initialize a sum variable with 0.
while(num!=0){
int digits = num % 10;
sum += digits;
num /= 10;
}We calculate the product of digits using a simple while loop.
Note : sum += digits, where += is a shorthand operator, which means sum = sum + digits.
After 1st iteration, add = 0 + 4 = 4, num becomes 123.
After 2nd iteration, add = 4 + 3 = 7, num becomes 12.
After 3rd iteration, add = 7 + 2 = 9, num becomes 1.
After 4th iteration, add = 9 + 1 = 10, num becomes less than 0 and loop terminates.
System.out.println("Sum of the digits of "+number+" is "+sum);Then, we print the results i.e. The sum of the digits. Hence, this is How to code the Java Program to Add Digits of a Number.
Conclusion
I hope after going through this post, you understand how to code Java Program to Add Digits of a Number.
If you have any doubt regarding the topic, feel free to contact us in the Comment Section. We will be delighted to help you.
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