Dart Program – Sum of Digits in a Number

Sum of Digits in a Number using Dart

In the following program, we read a number from user via console, and find the sum of digits in this number.

We use for loop to iterate over the digits of the number, and accumulate the sum of the digits in result.

Refer Dart For Loop tutorial.

main.dart

import 'dart:io';

void main() {
  print('Enter N');
  int N = int.parse(stdin.readLineSync()!);

  int result = 0;
  for (int i = N; i > 0; i = (i / 10).floor()) {
    result += (i % 10);
  }

  print('Sum of digits\n$result');
}

Output

Enter N
123456
Sum of digits
21

Summary

In this Dart Tutorial, we have written a Dart program to find the sum of digits in given number.